Gem Mine

Builder Base · Buildings · Max level 10

Gem Mines access a rare deposit of this highly valuable resource! Mining Gems is slow and hard work.

Gem Mine is one of the Buildings in the Builder Base and can be upgraded up to level 10. This page lists the full upgrade cost, time and stat data for every level from 1 to 10.

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B.O.B Control Clock Tower

Total Cost to Max · Elixir

19.5M

Total Time to Max

22d 5h

Max Hitpoints

1,150

Gem Mine Upgrade Data Overview

Upgrading Gem Mine from level 1 to 10 costs Elixir 19.5M in total and takes 22d 5h. The table below breaks down the cost, time, resource and stat growth for each level.

Upgrade Calculator

Current Level

Target Level

Resources Needed

19.5M Elixir

Time Needed

22d 5h

Gem Cost

2,876

Estimated with the official gem speed-up formula, for reference only

Upgrade levels

Lv. 1Req. TH 3
Time
1h
Cost
120K
Hitpoints
300
Cost Increase
—
Cumulative Cost
120K
Cumulative Time
1h
HP Increase
—
Lv. 2Req. TH 3
Time
2h
Cost
180K
Hitpoints
350
Cost Increase
+60K (+50.0%)
Cumulative Cost
300K
Cumulative Time
3h
HP Increase
+50 (+16.7%)
Lv. 3Req. TH 3
Time
6h
Cost
240K
Hitpoints
400
Cost Increase
+60K (+33.3%)
Cumulative Cost
540K
Cumulative Time
9h
HP Increase
+50 (+14.3%)
Lv. 4Req. TH 4
Time
8h
Cost
450K
Hitpoints
460
Cost Increase
+210K (+87.5%)
Cumulative Cost
990K
Cumulative Time
17h
HP Increase
+60 (+15.0%)
Lv. 5Req. TH 5
Time
12h
Cost
1M
Hitpoints
550
Cost Increase
+550K (+122.2%)
Cumulative Cost
2M
Cumulative Time
1d 5h
HP Increase
+90 (+19.6%)
Lv. 6Req. TH 6
Time
1d
Cost
1.5M
Hitpoints
650
Cost Increase
+500K (+50.0%)
Cumulative Cost
3.5M
Cumulative Time
2d 5h
HP Increase
+100 (+18.2%)
Lv. 7Req. TH 7
Time
2d
Cost
2.5M
Hitpoints
750
Cost Increase
+1M (+66.7%)
Cumulative Cost
6M
Cumulative Time
4d 5h
HP Increase
+100 (+15.4%)
Lv. 8Req. TH 8
Time
4d
Cost
3.5M
Hitpoints
850
Cost Increase
+1M (+40.0%)
Cumulative Cost
9.5M
Cumulative Time
8d 5h
HP Increase
+100 (+13.3%)
Lv. 9Req. TH 9
Time
6d
Cost
4.5M
Hitpoints
1,000
Cost Increase
+1M (+28.6%)
Cumulative Cost
14M
Cumulative Time
14d 5h
HP Increase
+150 (+17.6%)
Lv. 10Req. TH 10
Time
8d
Cost
5.5M
Hitpoints
1,150
Cost Increase
+1M (+22.2%)
Cumulative Cost
19.5M
Cumulative Time
22d 5h
HP Increase
+150 (+15.0%)

	Level	Time	Cost	Cost Increase	Cumulative Cost	Cumulative Time	Resource	Hitpoints	HP Increase	Req. TH
Req. TH 3
	1	1h	120,000	—	120K	1h	Elixir	300	—	3
	2	2h	180,000	+60K (+50.0%)	300K	3h	Elixir	350	+50 (+16.7%)	3
	3	6h	240,000	+60K (+33.3%)	540K	9h	Elixir	400	+50 (+14.3%)	3
Req. TH 4
	4	8h	450,000	+210K (+87.5%)	990K	17h	Elixir	460	+60 (+15.0%)	4
Req. TH 5
	5	12h	1,000,000	+550K (+122.2%)	2M	1d 5h	Elixir	550	+90 (+19.6%)	5
Req. TH 6
	6	1d	1,500,000	+500K (+50.0%)	3.5M	2d 5h	Elixir	650	+100 (+18.2%)	6
Req. TH 7
	7	2d	2,500,000	+1M (+66.7%)	6M	4d 5h	Elixir	750	+100 (+15.4%)	7
Req. TH 8
	8	4d	3,500,000	+1M (+40.0%)	9.5M	8d 5h	Elixir	850	+100 (+13.3%)	8
Req. TH 9
	9	6d	4,500,000	+1M (+28.6%)	14M	14d 5h	Elixir	1,000	+150 (+17.6%)	9
Req. TH 10
	10	8d	5,500,000	+1M (+22.2%)	19.5M	22d 5h	Elixir	1,150	+150 (+15.0%)	10