Quickly estimate the weight of faceted gemstones using their cutting style and dimensions. Archive this information with photos for future reference.


249+ iOS apps curated and reviewed
The best gemstone weight apps on iPhone average 4.6★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | Aug 2026 | |
| 2 | Free | 4.3★ (3) | No | No | May 2026 | |
| 3 | $0.99 | 3.7★ (3) | No | No | Aug 2026 | |
| 4 | Free | — | No | No | May 2026 | |
| 5 | Free | 4.8★ (774K) | Yes | Yes | Aug 2026 | |
| 6 | Free | — | No | No | Aug 2026 | |
| 7 | Free | 4.7★ (4.5K) | Yes | Yes | Aug 2026 | |
| 8 | Free | 5.0★ (1) | No | No | Aug 2026 |






Quickly estimate the weight of faceted gemstones using their cutting style and dimensions. Archive this information with photos for future reference.




Easily calculate the carat weight of diamonds and gemstones by entering their dimensions. This tool is essential for jewelers, collectors, and anyone buying or selling precious stones, offering accurate and instant results.




This app helps users achieve their weight loss goals by tracking calorie intake, nutrition, and exercise. It offers features like AI-powered meal logging, barcode scanning, and personalized diet plans to simplify the journey to a healthier lifestyle.




This app offers a comprehensive yoga and fitness experience for all levels. It provides a wide variety of guided classes, including classic yoga, chair yoga, and Pilates, along with personalized programs and meditation sessions. Users can track their progress and download classes for offline use.


This app provides professional tools for calculating gemstone weight, pricing, and setting costs. It helps jewelers, traders, and enthusiasts make informed decisions with features like currency conversion and duty estimation.


Explore the world of colored gemstones with this app, featuring high-quality images of current and past inventory. Discover detailed information on popular gemstones, including their lore, history, and science, making it a valuable resource for both jewelry professionals and consumers.


This AI-powered platform provides real-time market value insights for gemstones and diamonds. It helps traders, buyers, and investors avoid overpaying by comparing quoted prices to actual worth. Gain instant, data-driven valuations and educational insights into gemstone pricing.






Instantly identify gemstones, rocks, and minerals using AI. Get detailed reports, chat with an AI expert, and organize your discoveries. Perfect for enthusiasts and collectors.








Identify gemstones using optical and physical properties like a professional. Features detailed guidance for instrument testing and collection management. Includes a database of 119 gems, from common to rare.


Explore the world of colored gemstones and jewelry. Browse galleries for inspiration, start custom design projects, and get instant notifications for newsletters. Easily contact the developer for inquiries or to initiate purchases.


Instantly identify and value gemstones and jewelry using your phone's camera. Get data-backed market valuations, track your collection's worth, and access detailed market intelligence for over 200 gemstone varieties.


This app offers a comprehensive solution for converting various weight and mass units. It supports metric, imperial, troy, and force units, along with compound combinations and custom precision settings. Designed for ease of use with features like favorites and dark mode.