Contact
Something stuck in the rock? Tell us.
Email us at
rosawilliams199165@gmail.comBug reports, feature ideas, questions about your save — every message is read by a person. We usually reply within a couple of days.
Attaching a screenshot from the in-app support form helps us fix things faster.
Arbor Culture JH Services LLC
+1 (337) 634-6206285 W Pearl Ave, Jackson - 83001-8406, United States (US)
Frequently asked
What is Gem of Luck?
A relaxing idle mining game for Android. You tap to dig for coins, find six kinds of gems, upgrade your tools, and prestige at Gem Level 10 for permanent multipliers. The mine keeps working while you are away.
Is it really free? Are there purchases or ads?
It is completely free. There are no in-app purchases, no ads and no subscriptions — boosts and perks in the shop are bought with the coins and gems you mine yourself.
Do I need an account or an internet connection?
No account and no connection needed. The game runs entirely on your device and the save is stored locally. The only online feature is the legal pages in Settings.
How does Auto-Mine work?
Once you buy Auto-Mine, it digs coins into your deposit in the background — even while the app is closed. Tap the deposit plate to collect what it earned. Up to a cap set by the Deep Vein upgrade and the Deep Vault perk.
What happens when I prestige?
Prestige unlocks at Gem Level 10. Trading the run for crystals resets your coins, tools, deposit and boosts — but the vault, gems, perks, crystals and lifetime statistics are kept. Each crystal adds ×0.10 to every coin you mine from then on.
How do I report a bug or suggest a feature?
Use the Contact Support row in Settings, or email rosawilliams199165@gmail.com. A screenshot of what went wrong helps a lot.
How do I reset my progress?
Open Settings and use Reset Progress in the danger zone. It erases the save after a confirmation — this cannot be undone. Uninstalling the app also removes the save.
Which devices does it run on?
Android phones running Android 7.0 or newer, portrait only. The game is designed for phones and is not built for tablets.