Clash of Clans - Building - Builder Base - Resources - Gem Mine

In Clash of Clans, Builder Base, the Gem Mine is the building that allow to generate the resource Gem! Gem are used to purchase Golds, Elixir or Boost Army Camp Production!

The Gem Mine is already present when you enter the Builder Base and it can be repaired when upgrading the Builder Hall Level 3!

Gem Mine Information

- Gem Mine produce the resource Gem over time.
- Collecting Gem from Gem Mine by Tapping on the Gem Mine!
- When being attacked by other Players, 0% of the produced Gem can be steal!
- Upgrading Gem Mine raise the Capacity, Production Rate and Hitpoints but it stop the production of Gem!
- Maximum Gem Mine available is 1.
- Gem Mine Size: 3x3

Gem Mine Chart

Gem Mine Level	Elixir Cost	Builder Time	Expy Gain	Capacity	Production Rate	Hitpoints	Time to Fill	Builder Hall Level Require
1	120,000	1H	60	10	2.16/D	300	4D 15H 6M 40S	3
2	180,000	2H	84	11	2.4/D	345	4D 14H	3
3	240,000	6H	146	12	2.64/D	397	4D 13H 5M 27S	7
4	450,000	8H	169	13	2.88/D	457	4D 12H 20M	4
5	1,000,000	10H	189	14	3.12/D	526	4D 11H 41M 32S	5
6	1,500,000	12H	207	16	3.36/D	605	4D 18H 17M 9S	6
7	2,500,000	1D	293	18	3.84/D	696	4D 16H 30M	7
8	3,500,000	2D	415	20	4.32/D	800	4D 15H 6M 40S	8
9	4,500,000	3D	509	22	4.8/D	840	4D 14	9