# Écrin: Gem Cutting — Crack, cut and polish gems > Crack, cut and polish gems (iPhone/iPad app by Arihide Takahashi.) - Source: https://appshunter.io/ios/app/ecrin-gem-cutting/id6827218136 (this page in markdown: same URL + `.md`) - Developer: [Arihide Takahashi](https://appshunter.io/developer/1578292227) - Category: Games, Entertainment, Casual, Simulation - Price: Free - Age rating: 4+ - Requires: iOS 15.0 · 191 MB - Languages: American English, Japanese - Released: 2026-10-30 - Data updated: 2026-11-10 ## What is Écrin? Crystals that grew deep underground for tens of thousands of years, polished to brilliance by your own hands. Écrin is a quiet gem-cutting game: crack a geode, take out the rough stone, and cut it into a jewel. - Crack a geode Tap the rocky shell a few times and it breaks open to reveal a rough crystal. From diamond, ruby and emerald to Paraíba tourmaline, alexandrite and ammolite, 90 kinds of gemstones are waiting inside. - Cut it on a faceting machine A 96-tooth index wheel and an angle scale, just like a real faceting machine. Lower the stone onto the spinning lap and grind and polish it one facet at a time. Follow the guide step by step and even your first stone will come out beautifully cut. - 45 cuts from around the world Round brilliant, emerald, princess, Asscher, rose, briolette and more: 45 named flat-faceted cuts. The same stone sparkles completely differently depending on the cut. - Chase the light Each stone has its own refractive index and dispersion, and the light passing through it is traced to draw it. Turn the stone with your finger to watch the rainbow fire under the table and the flashes that run across the facets. - Collection Every stone you crack, cut and finish is kept in your collection, with the cut you chose for it. Pick one up and admire it any time. Sort them by color, hardness, the order you found them and more. - Requests Every day a customer comes to the workshop looking for a gem. A Nihonga painter wants a stone the color of a painting, a carpenter wants a hard stone for the family of a newly finished house, and a ballet dancer wants earrings light enough to spin in. Listen, choose a stone that fits, cut it and hand it over. Completing requests raises your artisan level and unlocks rare cuts with many steps, such as the briolette, the Jubilee and the Portuguese cut. - Encyclopedia Look up the color, transparency, hardness, refractive index, specific gravity, birthstone month and origins of all 90 gemstones, including ones you don't own yet. Use it to tell similar stones apart and to find the right one for a request. - Gem fortune-telling Roll the gems you've collected in your hand, then toss them onto a brass board to read today's fortune. The board is split into five areas: love, work and study, money, rest, and relationships. Where each stone comes to rest decides its reading and its star rating. Throw 1 to 5 of your own gems, once a day. No account needed. Just open the app and start cutting. ## Is Écrin safe? Not enough ratings yet to assess Écrin. ## Is Écrin legit? Écrin: Gem Cutting appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Écrin is 75 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 1.1.0 — 2026-11-08 - Requests A new Requests tab at the right end of the tab bar. Every day a customer visits looking for a gem: listen to their story, choose a stone with the right color, transparency and hardness, cut it and hand it over. Completing requests raises your artisan level. Six cuts with many steps (briolette, Mughal, double rose, Jubilee, ball and Portuguese) open as your level goes up. - Encyclopedia Open it from the bottom right of Home to look up the color, transparency, hardness, specific gravity, birthstone month and origins of all 90 gemstones, including ones you don't own yet. - Also Stones in your collection can now be sorted by the order you found them, by color and more. ### 1.0.3 — 2026-11-03 New: Gem fortune-telling. Tap "宝石占い" on the home screen, toss your gems onto the board and read today's fortune (once a day). Also includes minor improvements. ### 1.0.2 — 2026-11-02 Improved the overall experience. ### 1.0.1 — 2026-10-31 Improved the overall experience. ### 1.0.0 — 2026-10-30 No release notes. ## More apps by Arihide Takahashi - [ダイヤモンドゲーム New](https://appshunter.io/ios/app/new/id1578292225) - [麻雀ソリティア3D - 上海](https://appshunter.io/ios/app/3d/id1585527714) - [リバーシ3D Classic](https://appshunter.io/ios/app/3d-classic/id1596851290) - [スマートボール3D](https://appshunter.io/ios/app/3d/id1610167731) All apps by Arihide Takahashi: https://appshunter.io/developer/1578292227 ## Related topics [forever garnet](https://appshunter.io/ios/topics/forever-garnet) · [fortune gemstones](https://appshunter.io/ios/topics/fortune-gemstones) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-10.*