Gems are Clash of Clans’ premium currency. They speed up upgrades, buy builders and magic items, and can skip the wait when you’re close to finishing a big upgrade. You can buy them, but there are several free, legitimate ways to earn gems every week — and knowing how to spend them matters just as much.
A quick warning first: “gem generators”, modded APKs and private servers are scams or break Supercell’s terms of service. At best they waste your time; at worst they steal your Supercell ID or get your account banned. Every method below is official and safe.
Table of Contents
1. Complete achievements (the biggest free source)
Achievements are one-time rewards for milestones like upgrading your Town Hall, winning attacks, donating troops, winning wars and clearing obstacles. Each achievement has three stars, and each star pays gems. Across your whole Clash career, achievements add up to thousands of free gems.
- Open Achievements from the profile/menu and claim completed ones — gems aren’t added until you tap Claim.
- Go for easy ones early: clearing obstacles, joining a clan, donating troops, and upgrading defences you’d upgrade anyway.
- Long-term achievements such as war stars and trophies pay out naturally as you play.
2. Clear obstacles — and watch for the Gem Box
Trees, bushes, logs and rocks around your village each drop a small number of gems (often 0–6) when you remove them.
- Plants regrow on free tiles, but rocks don’t — leave a few empty spaces so new trees and bushes keep spawning.
- The Gem Box is a special obstacle that gives 25 gems. Only one can exist at a time and a new one appears roughly once a week, so clear it as soon as you see it.
- Seasonal obstacles (holiday trees, anniversary cakes and so on) also appear during events and usually give gems too.
3. Repair and upgrade the Gem Mine (Builder Base)
In the Builder Base there’s a broken Gem Mine. Repair it (it costs 120,000 Gold) and it produces gems passively, like a Gold Mine. It’s slow — from about 2 gems a day at level 1 to around 5 a day when maxed — but it’s completely free over time. Upgrade it whenever you have a spare Builder Base builder and collect it regularly.
4. Do events, challenges and season tasks
- Limited-time events and challenges often reward gems directly or valuable magic items.
- Season challenges (the Gold Pass track) include rewards on the free track too, so complete what you can even without buying the pass.
- Clan Games don’t usually give gems, but their magic items (Builder Potions, Books, Hammers, Research Potions) are worth thousands of gems in time saved.
5. Get gem value from Clan War Leagues and wars
Winning wars and Clan War Leagues earns stars for war-related achievements (which pay gems) and League Medals you can trade for magic items in the League Shop. Being in an active war clan is one of the best long-term value boosts in the game.
Best ways to spend gems
Free gems arrive slowly, so make each one count:
- Builders first. The 3rd, 4th and 5th Builder’s Huts cost gems and permanently speed up your progress. Nothing else gives better long-term value.
- Save some gems for emergencies — finishing a Laboratory or Hero upgrade a few minutes early before a war, for example.
- Avoid spending gems on resources or boosting collectors early on; that’s poor value.
- Use magic items instead of gems to finish upgrades whenever you have them.
Buying gems safely
If you do want to buy gems, only use the in-game Shop or Supercell’s official web store (Supercell Store), which sometimes offers bonus value. Never buy from third-party sellers or give anyone your Supercell ID login.
FAQ
How many gems does a Gem Box give?
25 gems. A new one can spawn roughly every week if there’s room in your village.
How many free gems can I get from achievements?
Thousands over the life of an account. Most players earn a big chunk early by claiming star rewards as they upgrade.
Are gem generators real?
No. They’re scams, and using third-party tools to modify the game can get your account banned.
What’s the best thing to spend gems on?
Additional Builder’s Huts, then saving gems to finish key upgrades at the right time.
Hi, I’m Emam Hasan — an English teacher and the founder of Anirban Lexicon Center in Mirpur, Dhaka. I run Takedownloads to share honest game guides, tips and app reviews that help players choose well and play better. Alongside teaching, I work in digital marketing and SEO, and I enjoy turning complex topics into simple, helpful lessons anyone can follow.