£10 free - No deposit required

New players only. Opt in required. 7 day expiry. 99x wagering requirement. £50 max win and withdrawal for non-depositors. Only bonus stakes contribute towards wagering requirements. All games contribute except all blackjack variants. Players must enter a valid debit/credit card to claim this offer. 18+ Begambleaware.org T&C's Apply

First deposit offer up to £200

New players only. Deposit £20, £50, £100 or £200 as a single first deposit and wager 40x for a matched cash reward. 7 day expiry. Only cash stakes will qualify. Available on all games except all blackjack variants. 18+ BeGambleAware.org T&C's Apply

Great Gems

Cayetano Gaming present a diamond encrusted slot in the form of Great Gems. The opulent Great Gem appears on every spin and may extend at random - increasing your winning potential with it. With 1024 ways to win, bejeweled bonus features and low-paying symbol eliminations, Great Gems slot is a nine carat casino game.




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Bonus: Extender, Senior Reels

About Great Gems Slot

Great Gems slot is an online casino game developed by Cayetano Gaming. Played on five reels and four rows, you’ll have 1024 ways to win on every spin. Featuring a fun gem themed design, every symbol on the reels is a different type of jewel, with values ranging from 0.2 up to 8, dependent on how many symbols are involved in the winning combination. The highest paying symbol on the reels is the Wild, which not only offers the highest payout for a five-of-a-kind combination, but substitutes for all other pay symbols too.

There’s two epic special features on offer, in the form of the Extender which can increase a symbol’s size to cover up to 5x4 reel positions, whilst the Senior Reels feature eliminates low paying symbols for bigger potential prizes.

Play Great Gems slot on mobile, desktop or tablet here at 21.co.uk.

How to Play Great Gems Slot

Main Menu
The main menu can be revealed by pressing the button in the top right hand corner of the slot screen. From here you can access the paytable and help pages - we recommend you take a look at these before playing Great Gems slot.

Total Stake
Once you’ve familiarised yourself with the game, it’s time to set your bet. Use the plus and minus buttons either side of the Total Stake display panel to increase and decrease your bet. Double check that this value is to your satisfaction before spinning the reels of Great Gems slot.

Great Gems slot can be played in auto mode for players who have a specific number of rounds in mind. Click on the auto button then choose a number of total spins and a loss limit. Select the More Autoplay Settings tab to access further variables.

To initiate a single spin of the Great Gems reels at the current bet, hit the spin button.

Great Gems Slot Special Features

The Great Gem will appear on all spins and may extend at random, covering up to 5x4 gems at once - this means every symbol position on the reels may be covered by the same symbol.

Senior Reels
This feature eliminates up to seven low-paying gems for a higher chance of winning.

Great Gems Slot - the Verdict

Great Gems slot is certainly a treat for the eyes with gem-covered reels and a futuristic feel. Whilst there’s only two bonus features, they’re great ones which offer big potential wins. If you like this game, you’re sure to love Gem Blast and Starburst slot.