Gemstone Mine

Excellent 9.1 / 10

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Gemstone Mine Free Demo Play

In Gemstone Mine by Stakelogic, crystals are flying around your ears. Multiplier symbols increase the values of crystals, making the prize money soar.

The mine of Gemstone Mine features colored crystals, both around and on the playing field. Through the cluster pays mechanism, you make winning combinations with crystal symbols, increasing the size of the playfield by removing stones. With a little luck, you’ll even trigger Gemstone Mine’s free spins feature.

The Best Online Casinos & Bonuses to Play Gemstone Mine for Real Money

Gemstone Mine - Slot Review

How does the Gemstone mine slot work?

Gemstone Mine is a cluster pays slot. That means in this case that you spin clusters of at least 5 identical symbols for a winning combination. These symbols must be horizontally or vertically adjacent to each other.

The playing field of this slot has dimensions of 8×8. At the beginning of each spin, however, only part of the playing field is active. The bottom 2 rows and the outer rollers are locked. At the start of a spin you play on a 6×6 playing field. With winning combinations, you unlock locked positions and expand the playing field. For that, a winning symbol must be adjacent to a locked symbol. But beware: because a position is only unlocked when a winning symbol lands next to it 2 times.

Winning symbols disappear from the playing field due to the waterfall mechanism. Empty positions replenish the game from above with new symbols. As long as new symbols continue to produce new winning clusters, a spin continues.

Gemstone Mine

In our experience, you especially need multiplier symbols to win high prizes.

You play Gemstone Mine every spin with a bet of at least $0.20 and a maximum of $50. However, there is an optional super stake feature, which increases your bet by 25%. In return, it doubles your chances of triggering the free spins feature. Furthermore, Gemstone Mine has a high volatility, a maximum RTP of 96.11% and a maximum price of 7,500 times your bet.

The importance of multiplier symbols

Those multiplier symbols are hidden behind locked positions on the playing field. Thus, unlocking locked positions is of great importance. In addition, Gemstone Mine also has a free spins feature.

Good & Bad sides of Gemstone Mine

Good sides

  • Clear the entire playing field by making winning combinations
  • Multiplier symbols land with a multiplier up to x500
  • Earn up to 30 free spins at once

Bad sides

  • We would’ve loved a bigger max. bet

Multiplier symbols

You know that on an adjacent position you have to spin a winning symbol twice to unlock the locked position. At the same time, you also earn the multiplier that shows the multiplier symbol.

The minimum multiplier is x2 and the maximum multiplier is x500. The total of multipliers collected applies to the total winnings of the active spin. After a position is unlocked (and the multiplier is cashed out), regular pay symbols land on the relevant position from then on. At the start of a new spin, however, you return to the 6×6 playing field.

Gemstone Mine free spins

Once we managed to spin 4 dynamite scatters, triggering the Free spins feature of Gemstone Mine. The number of free spins can quickly increase:

  • With 4 scatters you earn 10 free spins
  • With 5 scatters you earn 15 free spins
  • With 6 scatters you earn 30 Free spins

By spinning 3 or more scatters during the free spins feature, you will earn 5 additional free spins.

The big difference with the base game is that the total multiplier does not reset between spins. Thus, over time, the total multiplier rises to great heights. In our experience, it therefore takes a while for the Gemstone Mine free spins feature to get going. Only with the last free spins does the prize money increase.

Gemstone Mine vs. 4 other slots from StakeLogic

Slot nameRTPMax. winBonus featureMultipliers
Gemstone Mine96.1%7,500xFree SpinsYes
Diamond Staxx96.2%5,000xNoneNo
Old Fellow95.6%50,000xFree SpinsYes
Wild Stocking95.5%25,000xFree SpinsYes
Pyramid Strike95.8%3,140xFree SpinsYes

What do we think?

We do not think Gemstone Mine is an innovative online slot, but a very nice slot to play. The soothing design and the clear gameplay ensure a pleasant gaming experience. In addition, you regularly win great prizes.

On the whole, however, Gemstone Mine is a bit too neutral. The slot can therefore not match a similar game like cluster Tumble from Relax Gaming.


This slot does not operate with paylines. Instead, the pay mechanism is called Cluster Pays. Any cluster of 5 or more identical symbols generates a win.

Each casino has its own welcome bonus system and special features. To get the best free spins offers, you can check out our list of casinos that offer the best free spin choices for Gemstone Mine as well as many other online slots!

Yes, when at least 4 Scatters land in your field at the same time, this will earn you at least 10 Free Spins. The more Scatters, the more Free Spins.

Of course it is! Try your luck at Gemstone Mine slot machine in the safety of one of our recommended casinos. We suggest you take a look at our page dedicated to trusted casinos so that you can enjoy yourself with complete peace of mind.

Software Stakelogic
Slot Types Megaclusters
Reels 8x8
Paylines Cluster Pays
Slot Game Features Avalanche, Bonus Buy, Cascading Symbols, Cluster Pays, Expanding reels, Free Spins, Scatters, Wild Symbol
Min. Bet 0.20
Max. Bet 50
Slot Themes Gold Rush, Mining
Slot RTP 96.1%
devices Mobile versionTablet versionDesktop version
Gemstone Mine Slot by Stakelogic

Game Winnings and Payouts

Gemstone Mine Blue Stone Symbol

x15+ = 300.00

x14 = 100.00

x13 = 50.00

x12 = 30.00

x11 = 15.00

x10 = 10.00

x9 = 5.00

x8 = 4.00

x7 = 2.00

x6 = 1.60

x5 = 1.20

Gemstone Mine Purple Stone Symbol

x15+ = 160.00

x14 = 80.00

x13 = 40.00

x12 = 25.00

x11 = 12.00

x10 = 8.00

x9 = 4.00

x8 = 3.00

x7 = 1.60

x6 = 1.20

x5 = 0.80

Gemstone Mine Red Stone Symbol

x15+ = 120.00

x14 = 60.00

x13 = 30.00

x12 = 20.00

x11 = 9.00

x10 = 6.00

x9 = 3.00

x8 = 2.50

x7 = 1.20

x6 = 0.80

x5 = 0.60

Gemstone Mine Green Stone Symbol

x15+ = 60.00

x14 = 30.00

x13 = 20.00

x12 = 10.00

x11 = 6.00

x10 = 4.00

x9 = 2.50

x8 = 2.00

x7 = 1.00

x6 = 0.70

x5 = 0.50

Gemstone Mine Single Blue Stone Symbol

x15+ = 50.00

x14 = 24.00

x13 = 16.00

x12 = 7.00

x11 = 5.00

x10 = 3.00

x9 = 2.00

x8 = 1.50

x7 = 0.80

x6 = 0.60

x5 = 0.40

Gemstone Mine Single Purple Stone Symbol

x15+ = 40.00

x14 = 20.00

x13 = 12.00

x12 = 6.00

x11 = 4.00

x10 = 2.50

x9 = 1.50

x8 = 1.00

x7 = 0.60

x6 = 0.50

x5 = 0.30

Gemstone Mine Single Red Stone Symbol

x15+ = 30.00

x14 = 16.00

x13 = 10.00

x12 = 5.00

x11 = 3.00

x10 = 2.00

x9 = 1.00

x8 = 0.80

x7 = 0.50

x6 = 0.40

x5 = 0.20


About the author

Kate Ko

Kate Ko / Games editor

last updated

Kate joined CorrectCasinos' game team in the late 2021. She's here to find and review all new and upcoming slots titles, so you can just enjoy their free play.

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