10 Best Carat Scale in 2026

Finding the right carat scale is crucial for jewelers, hobbyists, and anyone dealing with precious stones. A high-quality scale ensures accurate measurements, which directly impacts valuation and quality control in your work or collection.

We compared ten top-rated digital scales based on precision, capacity, durability, and user features. Our analysis focuses on models that offer reliable performance for everything from loose gemstones to small jewelry components.

Each pick below highlights specific strengths and ideal use cases to help you choose wisely. Please note that product availability and pricing can change frequently, so verify details before purchasing.

Top 3 Picks for Best Carat Scale

Top 10 Best Carat Scale in 2026 Compared

This table provides a side-by-side overview of all ten selected carat scales. Compare key specifications like capacity, readability, and included accessories to find the model that fits your specific weighing needs.

1. GemOro Platinum PCT101 – Best Overall Precision

4.4Editor scoreCheck price on Amazon

GemOro Platinum PCT101

100ct capacity

0.005ct readability

Draft shield included

Five year warranty

The GemOro Platinum PCT101 stands out as a top choice for professional jewelers and serious collectors who demand extreme precision. With a readability of 0.005 carats and a capacity of 100 carats, this scale handles everything from tiny accent stones to larger diamonds with confidence. Its 4.4 star rating reflects consistent performance and reliability among users who need accurate measurements for valuation purposes.

Pros

• Ultra high precision
• Protective draft shield
• Multiple unit modes
• Includes calibration weight
• Long warranty period

Cons

• Higher price point
• Requires flat surface

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Key strengths include the low-profile tinted draft shield which protects the weighing area from air currents that could skew results. The scale offers versatile weighing modes including carats, grams, pennyweight, ounces, troy ounces, and grains, making it adaptable for various applications. Push-button calibration and tare functions ensure ease of use, while the four-button interface keeps operation simple even for new users.

One trade-off is the higher price compared to basic pocket scales, but this is justified by the professional-grade features and the five-year warranty included. The scale requires a stable, flat surface to maintain accuracy, which is standard for high-precision instruments. While not the most portable option, the included carrying case and universal power adapter make it suitable for office or studio environments.

Buyers looking for a reliable tool for gemstone appraisal or inventory management should strongly consider this model. It balances precision, durability, and user-friendly features effectively. The inclusion of accessories like Swiss-style locking diamond tweezers and a calibration weight adds immediate value. This scale is an investment in accuracy that pays off for anyone working with valuable materials.

For those prioritizing exact measurements over portability, the PCT101 delivers exceptional results. The bright blue backlit display ensures readability in various lighting conditions. Its robust build quality suggests long-term durability under regular use. Ultimately, this scale provides the confidence needed when weighing high-value items where even minor discrepancies matter significantly.

Superior Draft Protection

The low-profile tinted draft shield expands to accommodate larger items while protecting sensitive measurements from air movement.

Versatile Weighing Modes

Supports multiple units like carats, grams, and troy ounces to suit diverse professional and hobbyist needs seamlessly.

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2. GemOro Platinum XP500 – Best for General Jewelry

4.6Editor scoreCheck price on Amazon

GemOro Platinum XP500

500g capacity

0.01g readability

Large stainless platform

Five year warranty

The GemOro Platinum XP500 is an excellent choice for those who need a balance between capacity and precision for general jewelry weighing. With a 500g capacity and 0.01g readability, it handles heavier items like bracelets or multiple gem parcels effectively. Its 4.6 star rating indicates high user satisfaction regarding its robust build and ease of use in various settings.

Pros

• Extra large platform
• High capacity weight
• Protective covers included
• Easy four button control
• Great battery life

Cons

• Less precise for gems
• Not for micro weights

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Strengths include an extra-large stainless steel platform that provides more room than typical pocket scales. Protective covers double as weighing trays, adding convenience for daily tasks. The scale offers flexible weighing modes including grams, carats, troy ounces, and pennyweight. Push-button calibration and tare functions simplify operations, while the battery-saving auto-off feature extends power life significantly.

While highly capable, this model is less precise than ultra-micro scales for tiny diamonds under one carat. Users needing 0.001g accuracy might find the 0.01g resolution limiting for high-end gem valuation. However, for general jewelry crafting, scrap metal, or bulk component weighing, it offers tremendous value. The black EZ-grip finish ensures comfortable handling during extended use sessions.

This scale is ideal for jewelers, crafters, or hobbyists who work with a mix of materials beyond just loose stones. The included five-year limited replacement warranty provides peace of mind for long-term use. Portability is moderate due to its size, but it remains compact enough for a workbench or small storage space. It strikes a practical balance for diverse weighing needs.

Buyers should consider this if their primary focus includes heavier items alongside standard jewelry pieces. The large platform reduces the risk of items falling off during measurement. Its reliability and straightforward interface make it a dependable tool for daily workflow. Overall, it serves as a versatile workhorse for professionals who need consistent results without ultra-high micro precision.

Large Weighing Area

The extra-large stainless steel platform accommodates larger jewelry pieces and prevents items from sliding off during measurement.

Dual Purpose Covers

Protective covers serve double duty as weighing trays to streamline your workflow and keep the scale clean.

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3. Tanita 1210N – Best Reliable Brand

4.0Editor scoreCheck price on Amazon

Tanita 1210N

100 carat capacity

0.01 carat graduation

Draft shield included

Japan technology

The Tanita 1210N offers a professional approach to weighing diamonds and precious metals with a focus on reliability. With 100 carat capacity and 0.01 carat graduation, it meets standard industry needs for most gemstone measurements. Tanita is a well-regarded brand known for durability and quality, reflected in its consistent performance ratings over the years among users.

Pros

• Trusted brand name
• Includes draft shield
• AC adapter option
• Easy to read display
• Durable construction

Cons

• Basic feature set
• Limited unit options

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Key strengths include the inclusion of a draft shield and soft carry case, making it practical for both studio and travel use. The scale measures in grams, carats, grain, and troy ounce, covering essential units for jewelry work. Its simple operation and easy-to-read 5-digit LCD display ensure users can focus on the task without confusion or technical hurdles.

A limitation is the lack of advanced features found in higher-end models, such as computer interfaces or extensive unit conversions. Some users may find the price point elevated compared to generic alternatives given the feature set. However, the option to use an AC adapter eliminates battery dependency for stationary use. This makes it a solid choice for offices or workshops where stability is key.

Ideal buyers include small shop owners or independent jewelers who prioritize brand reputation and basic functionality. The gem cup accessory adds convenience for weighing loose items securely. The 4.0 rating suggests it meets expectations for accuracy though some may desire finer resolution for very small stones. Overall, it is a dependable tool for routine professional weighing tasks.

For those who value consistency and simplicity, the Tanita 1210N delivers trustworthy results. The Japan technology ensures quality control during manufacturing. The low battery indicator and auto-off features add practical convenience for daily use. This model serves well as a standard reference scale for verifying weights in a retail or appraisal environment efficiently.

Japan Technology Quality

Built with Tanita's reliable Japan technology to ensure durability and consistent results for professional weighing.

AC Adapter Support

Offers an AC adapter option for stationary use without needing to worry about battery replacement frequently.

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4. Tanita KP-601 – Best for High Capacity

4.4Editor scoreCheck price on Amazon

Tanita KP-601

500 carat capacity

USB computer interface

Dual sided display

Backlit display

The Tanita KP-601 is a professional-grade scale designed for high-volume or large-item weighing needs. With a capacity of 500 carats and 100 grams, it handles bulk parcels or large jewelry components with ease. Its 4.4 star rating reflects satisfaction among users who need robust performance for demanding environments without sacrificing accuracy.

Pros

• Very high capacity
• USB data output
• Dual sided display
• Includes calibration weight
• Comprehensive accessories

Cons

• Higher price cost
• Larger footprint

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Key strengths include a USB output port for computer interface, allowing seamless data transfer for inventory management. The dual-sided display and backlit display improve readability from multiple angles and low light conditions. Features like a built-in liquid level and adjustable feet ensure the scale remains level and accurate on various surfaces. The draft shield and gem cup protect items during measurement.

The higher price reflects the advanced features and build quality suitable for commercial use. Its larger footprint may be an issue for tight workspaces compared to pocket models. However, the inclusion of AC adapter, batteries, test weight, and soft case adds significant value. This model is designed for longevity and heavy daily use in professional settings.

Ideal buyers are jewelry manufacturers, scrap dealers, or appraisal offices that require data logging and high capacity. The 1-year warranty provides baseline protection though users may expect more given the price. For those needing to connect scales to computers for records, this interface is essential. It combines practical design with professional functionality effectively.

This scale is a powerful tool for those scaling up their weighing operations beyond simple gem checks. The combination of capacity, connectivity, and stability makes it a standout in its class. While an investment, it streamlines workflows for businesses handling significant volumes of precious materials regularly. It remains a strong candidate for serious professional applications.

Data Connectivity

USB mini-B output port enables computer interface for easy data logging and inventory management integration.

High Capacity Design

Handles up to 500 carats and 100 grams for weighing larger parcels or bulk precious metal items easily.

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5. MAXUS Digital Milligram Scale – Best for Micro Precision

4.4Editor scoreCheck price on Amazon

MAXUS Digital Milligram Scale

50g capacity

0.001g readability

Compact size

USB power option

The MAXUS Digital Milligram Scale excels in micro precision with a readability of 0.001g and a 50g capacity. This makes it ideal for weighing tiny gems, powders, or small components where detail matters. Its 4.4 star rating indicates reliable performance across hobby and professional use cases for those needing extreme accuracy in a small package.

Pros

• Ultra fine resolution
• Portable compact design
• Dual power options
• Includes calibration weights
• Multi-use functionality

Cons

• Low max capacity
• Small platform

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Strengths include the compact size that fits easily on desks or workbenches without taking up space. Dual power options via batteries or USB allow flexibility for portable or stationary use. The six unit modes cover carats, grams, troy ounces, and more for versatile needs. A complete accessory kit with weights, tweezers, and scoop enhances immediate usability.

A trade-off is the limited capacity which restricts weighing of larger items. The small platform requires careful placement to avoid overloading or errors. However, for its intended use of micro weighing, it performs exceptionally well. Users should ensure a stable surface to maximize the benefits of the 0.001g resolution without interference from vibrations.

This scale is perfect for jewelry makers, researchers, or hobbyists working with small quantities of materials. The simple calibration process helps maintain consistency over time. Its reliability for small items makes it a great secondary scale for detailed tasks. The price point offers good value for the level of precision provided in such a small form factor.

Buyers seeking ultra-fine measurements for specific tasks should find this model highly useful. The inclusion of calibration weights removes the need to buy extras separately. It balances portability and precision effectively for targeted applications. Overall, it is a practical tool for detailed work requiring accuracy down to the milligram level reliably.

Milligram Precision

Offers 0.001g readability for accurate weighing of powder, gemstones, and other micro items easily.

Dual Power Flexibility

Supports both battery and USB power to suit portable or desk-bound setups according to your needs.

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6. Digital Pocket Gram Scale – Best Value Compact

4.6Editor scoreCheck price on Amazon

Digital Pocket Gram Scale

200g capacity

0.01g readability

Blue backlit display

Portable design

The Digital Pocket Gram Scale offers high precision in an affordable compact package suitable for general use. With a 200g capacity and 0.01g accuracy, it covers most jewelry and small item weighing needs effectively. Its 4.6 star rating suggests strong user satisfaction with its balance of features and cost for everyday tasks.

Pros

• Affordable price
• Calibration weight included
• Bright display
• Lightweight portable
• Six weight modes

Cons

• Basic construction
• Requires frequent calibration

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Key strengths include the blue backlit display which ensures readability in various lighting conditions. The stainless steel platform and protective flip cover add durability to the lightweight design. Six different weight modes allow flexibility for gold, silver, gems, or coins. A 60-second auto shut-off helps preserve battery life during idle periods.

While a great value, users should note the recommendation to calibrate before each use for optimal accuracy. The basic construction may not withstand heavy professional abuse like industrial models. However, for occasional use or travel, it performs well. The included 100g calibration weight simplifies setup right out of the box for new users.

Ideal buyers include hobbyists, travelers, or small shop owners needing a reliable portable option. Its dimensions make it easy to store in a bag or drawer without taking up space. The auto shut-off and clear display improve the user experience significantly. For its price range, it offers a solid performance profile for standard weighing tasks.

This scale is a practical choice for those needing accuracy without a large investment. The protective cover shields the sensor during transport to reduce damage risks. Users should handle items gently on the platform to maintain precision. Overall, it is a capable tool for general weighing needs requiring reliable results regularly.

Bright Display

Large size digits and stark contrast LCD blue backlit display make it easy to read in all light conditions.

Protective Cover

Stainless steel platform with protective flip cover protects the sensor and keeps the scale safe during transfer.

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7. American Weigh Scales – Best Budget Friendly

4.6Editor scoreCheck price on Amazon

American Weigh Scales

600g capacity

0.1g accuracy

Compact portable

10 year warranty

The American Weigh Scales AWS-600 is a budget-friendly option offering a generous 600g capacity and 0.1g accuracy. It serves general weighing needs for food, coins, jewelry, and powders well. Its 4.6 star rating reflects broad satisfaction among users looking for a reliable and affordable tool for everyday tasks.

Pros

• Extremely affordable
• High capacity
• Long warranty
• Trusted brand
• Simple operation

Cons

• Lower precision
• Basic features

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Strengths include the compact design that fits in pockets or bags easily. American Weigh has over 20 years of industry presence ensuring trust in the brand. The 10-year warranty is an standout feature offering long-term peace of mind for buyers. It features standard modes for grams, ounces, carats, and grains for flexibility.

The main trade-off is the 0.1g precision which is too coarse for small gemstones under a few carats. Users requiring finer detail will need a milligram scale instead. However, for bulk items or general verification, it performs consistently. Its durability and low cost make it an excellent entry-level choice or backup scale.

This scale is ideal for home users, food prep, or general jewelry weighing where ultra-high precision is not critical. The simple interface ensures ease of use for all ages. The warranty coverage is rare at this price point adding significant value. It is a practical tool for those who need basic weighing capabilities reliably.

Buyers seeking cost-effective weighing without sacrificing brand reliability should consider this model. The lightweight build supports portability for on-the-go verification. While not a specialist tool, it handles common tasks efficiently. Overall, it represents strong value for money and a solid starting point for weighing needs broadly.

Exceptional Warranty

Backed by a 10-year warranty reflecting commitment to quality and customer satisfaction over long periods.

Compact Design

Sized to fit in your pocket or bag for lightweight and durable weighing on the go easily.

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8. Wigearss Digital Milligram Scale – Best Mini Precision

4.2Editor scoreCheck price on Amazon

Wigearss Digital Milligram Scale

50g capacity

0.001g readability

7 weighing units

Backlit LCD

The Wigearss Digital Milligram Scale provides ultra-accurate weighing with 0.001g readability and a 50g capacity. It is designed for small items like jewelry components, herbs, or powders where precision is key. Its 4.2 star rating suggests it performs well for micro tasks though users should be mindful of environmental factors.

Pros

• High accuracy
• Seven unit modes
• Clear display
• Lightweight build
• Auto shut-off

Cons

• Small platform
• Draft sensitive

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Key strengths include switching between seven weighing units to suit diverse needs quickly. The backlit LCD screen ensures easy reading in any lighting conditions. A durable stainless steel pan and ABS shell make it tough enough for daily home environments. The auto shut-off after 180 seconds helps save battery power effectively.

Trade-offs include a small platform requiring careful item placement to avoid errors. Windy conditions can impact accuracy due to the sensitivity of the milligram level. However, for controlled indoor use, it is effective. The included 50g calibration weight ensures results remain consistent after proper setup by users.

This scale is perfect for jewelers, herbalists, or hobbyists needing detailed measurements on a budget. Its portability allows for easy storage in drawers or travel kits. The tare function simplifies net weighing for containers easily. For those needing 0.001g accuracy without high cost, this model delivers practical functionality well.

Buyers should place the scale on a stable flat surface away from drafts for best results. The overload protection prevents damage if items exceed capacity accidentally. Overall, it is a capable micro scale for various household and professional tasks. It balances precision with affordability in a compact format effectively.

Seven Unit Modes

Switch between g, oz, ozt, dwt, ct, tl, and gn to suit various tasks without needing multiple tools.

Tare Function

Reset to zero quickly to deduct container weight for accurate net weight of small items every time.

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9. Tanita 1230 Professional – Best Portable Brand

4.0Editor scoreCheck price on Amazon

Tanita 1230 Professional

4 weighing modes

Portable foldable

Draft shield

Japan technology

The Tanita 1230 Professional Mini Diamond Scale is designed for portable weighing with a focus on precision gems. It accurately measures in four modes ensuring reliable readings for diamonds and gems. With a 4.0 rating, it delivers the brand's standard quality for users seeking durability and accuracy in a compact package.

Pros

• Foldable portable
• Includes gem cup
• Stability indicator
• Japan built quality
• Auto power off

Cons

• Basic features
• Higher cost

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Strengths include a compact foldable design with a hard cover and draft shield for protection. This makes it ideal for on-the-go use in client meetings or travel. The simple interface and easy-to-read 5-digit LCD display allow effortless weighing. Included accessories like a gem cup and calibration weight add immediate practical value.

While effective for its purpose, it lacks advanced features found in higher-end models. The price is higher than generic portable scales. However, the reliability and Japan technology ensure long-term performance. The stability indicator helps confirm accurate readings before recording. Auto power-off saves energy for extended use without constant user intervention.

Ideal buyers are mobile appraisers, traveling jewelers, or collectors needing a secure portable tool. The soft case ensures safe storage during transport. For routine checks requiring precision, it provides the necessary accuracy. This scale balances portability with professional-grade consistency for specialized use effectively.

This model is a strong choice for those prioritizing mobility without sacrificing brand reliability. The foldable design protects the sensor when not in use. Its consistent performance makes it a dependable tool for field work. Overall, it serves well for portable gem weighing where accuracy and protection are essential daily.

Foldable Protection

Compact foldable design with hard cover and draft shield protects against external influences during travel.

Stability Indicator

Features a stability indicator to confirm accurate readings before recording measurements for confidence.

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10. Smart Weigh Digital Pocket – Best for General Use

4.5Editor scoreCheck price on Amazon

Smart Weigh Digital Pocket

100g capacity

0.01g increments

Flip cover

Backlit LCD

The Smart Weigh Digital Pocket Gram Scale offers precise measurements with 0.01g increments up to 100g capacity. It is suitable for reloading powder, gemstones, and other high accuracy needs. With a 4.5 star rating, it delivers consistent performance and value for users seeking a reliable tool for diverse weighing tasks.

Pros

• Precise increments
• Flip cover protection
• Tare function
• Compact size
• Batteries included

Cons

• Limited units
• Small platform

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Key strengths include the rugged and portable design with a protective flip-top cover. This cover shields the sensitive sensor from damage during transport. The one-touch tare function zeros out containers quickly. A blue backlit LCD provides clear readings in any light. Batteries are included so it is ready to use right away.

Trade-offs include limited unit options compared to broader models. The small platform requires care to place items centrally. However, for its intended uses like jewelry and powder, it performs well. The 2-year warranty adds assurance for long-term reliability. Users should calibrate regularly for consistent accuracy over time.

Ideal buyers include reloaders, jewelers, or home hobbyists needing portable precision. The compact size fits in pockets or lab kits easily. Its simple operation makes it accessible for various users. For its price, it offers a practical balance of durability and accuracy for everyday use.

This scale is a reliable tool for those needing accurate small-item weighing without complexity. The protective cover extends its lifespan significantly in bags or travel cases. It meets standard professional needs for general verification tasks. Overall, it is a smart investment for consistent and portable weighing solutions.

Flip Cover Protection

Protective flip-top cover shields the sensitive sensor from damage and extends the scale lifespan.

Ready to Use

Comes with 2 AAA batteries included so you can start weighing right away without delays.

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Buying Guide – How to Choose the Best Carat Scale

Choosing the right carat scale depends on your specific weighing needs, environment, and budget. This guide outlines the key factors to consider to help you select a scale that provides accurate and reliable results.

Precision and Readability

Precision refers to the smallest increment a scale can display. For diamond or gemstone weighing, look for scales offering 0.001g or 0.005ct readability. Lower numbers indicate higher precision which is essential for valuing small items accurately.

Prioritize higher readability if you deal with loose stones or components under one carat to ensure accurate valuation and measurement.

Weighing Capacity

Capacity is the maximum weight a scale can handle before showing an overload error. Check the maximum weight limit based on typical items you will measure. Larger capacity is beneficial for parcels or bulk metal but may reduce precision for tiny items.

Select a capacity that covers your largest expected items without compromising the required precision for smaller ones.

Draft Shield Protection

Draft shields are transparent covers that protect the weighing platform from air currents. For high-precision scales, these are critical to prevent minor air fluctuations from altering readings. A draft shield ensures stability especially in non-controlled environments.

Ensure your chosen model includes a draft shield or shield-compatible design to maintain accuracy during measurements.

Calibration Features

Calibration ensures the scale remains accurate over time. Look for scales with push-button calibration and included calibration weights. Some models support external weights for higher accuracy. Proper calibration should be done periodically for consistent results.

Choose models with easy calibration options and included weights to maintain measurement accuracy effortlessly.

Power Options

Scales typically run on batteries or AC adapters. Battery models are portable while AC models are better for stationary use without battery changes. Some offer both options for flexibility. Consider where you will use the scale most often.

Opt for dual power options if you need both portability and stationary use to avoid downtime from dead batteries.

Build Quality and Warranty

Durability depends on the materials used such as stainless steel platforms and protective covers. A good warranty indicates the manufacturer's confidence in their product. Look for warranties ranging from one year to ten years for peace of mind.

Invest in scales with solid build quality and longer warranties to ensure longevity and support for repairs.

Weighing Modes

Different tasks require different units like carats, grams, troy ounces, or grains. Scales with multiple modes offer flexibility for various materials and industries. Switching modes should be easy via a dedicated button to streamline your workflow.

Verify the available units match your needs so you can weigh diverse materials without needing multiple scales.

Display and Interface

A clear display with backlighting helps read results in low-light conditions. Backlit LCDs are preferable for varied lighting environments. Buttons should be intuitive and responsive. Consider the number of buttons versus ease of use.

Select a model with a bright display and simple button layout for error-free and comfortable weighing experiences.

How to Use and Care for Your Carat Scale

Place the scale on a hard, flat, and stable surface free from vibrations or drafts. Ensure the draft shield is fully closed before zeroing the scale to protect the sensor from air currents.

Turn on the scale and wait for it to stabilize. Press the tare button to zero out any container before placing your item. Gently place the item in the center of the platform to avoid uneven weight distribution.

Clean the scale regularly using a soft brush or cloth to remove dust. Avoid harsh chemicals on the display. Recalibrate periodically using the provided weights. Store the scale in its carrying case when not in use to protect it from dust and damage.

Frequently Asked Questions

Final Thoughts on Choosing the Best Carat Scale

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