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Slot theme · Gem

Gem slots: jewels, crystals and cluster slots

Gem slots use cut jewels as symbols, and most of them are cascade or cluster games where wins clear and new gems fall in. The grid lists every slot tagged Gem on this site with its published RTP and volatility rating.

By Aaron Mitchell Updated 6 Oct 2026

Why are gem slots often high volatility?

Many are pay-anywhere or cascade slots with multipliers, where a big win needs several cascades in a row. The volatility mix in the figures section shows how the theme compares with all slots.

Computed from the slots we list

Gem slots in figures

Slots listed
27
All slots: 2,090
Median RTP
96.40%
All slots: 96.01%
Middle half of RTPs
96.00%–96.50%
All slots: 95.50%–96.50%
With a published RTP
23 (85%)
All slots: 42%

Slots per RTP band

Under 94% 4%
94–95.99% 17%
96–96.49% 39%
96.5% and up 39%

All slots

Volatility mix (22 rated slots)

Low 14%
Medium 27%
High 50%
Very high 9%
Extreme 0%

Most common features: Wild Symbols (15) · Multipliers (14) · Free Spins (11) · Scatter Symbols (9)

Most gem slots we list carry a published RTP, and the theme's median sits above the catalogue's.

Computed from the slots we list. RTP is each slot's listed figure for its standard version; volatility counts only ratings on a five-step scale from studios whose ratings vary.

Slots

Gem slots we list

Gem and jewel slots we list. Sorted by our weighting.

All 27 slots, A–Z

How the theme plays

How gem slots play

Cascades

Winning gems disappear and new ones fall into the gaps, so one spin can pay several times.

Cascading reels →

Pay anywhere

Some gem slots pay for eight or more matching gems anywhere on the grid instead of on lines.

Scatter pays →

Classic jewel slots

Smaller 3x3 or 5x3 games with gem symbols and a hot or burning style.

What it means: Lower volatility, simpler rules.

Diamond slots →

Cost per spin Computed from the slots we list

What these slots cost per spin

Expected cost = bet × spins × (1 − RTP), at the median RTP of these slots, 96.40%.

Bet per spin 100 spins 1,000 spins 1 hour (600 spins) vs median 96.01%
KSh 10 KSh 36 KSh 360 KSh 216 −KSh 39
KSh 20 KSh 72 KSh 720 KSh 432 −KSh 78
KSh 50 KSh 180 KSh 1,800 KSh 1,080 −KSh 195
KSh 100 KSh 360 KSh 3,600 KSh 2,160 −KSh 390

What a percentage point of RTP is worth

At KSh 20 a spin, 1,000 spins put KSh 20,000 through the slot. Each percentage point of RTP is KSh 200 of that on average, so a 94% slot costs about KSh 500 more over those spins than a 96.5% one.

What it means: The theme does not change the maths. Check a slot's RTP before you pick it for its look.

Picks

Which Gem slot fits how you play

Picked by volatility and published RTP. Open the slot page for its figures and cost.

Medium volatility

Jokers Jewels

A 5-reel jewel slot from Pragmatic Play, rated medium volatility.

Jokers Jewels figures →

Where to play Live ranking

Slot sites for Kenyan players

The site's live ranking. Payment ticks come from each casino's own payment list; check that it carries the studio of the slot you want before you deposit.

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Payment ticks come from each casino's live payment list; a dash means it is not listed, not that it is missing.

Gem slots: questions

What are gem slots?

Slots with jewels as symbols. Most are cascade or cluster games.

Are gem slots and diamond slots the same?

We split them: diamond slots are mostly classic diamond-and-seven machines, gem slots are jewel and cluster games.

Which gem slot has the highest RTP?

Sort the grid by RTP; each card shows the studio's published figure for its standard version.

18+

Responsible gambling

Play slots only if you are 18+ and it stays fun

Set a budget in KSh before you deposit, keep sessions short and never chase losses. Every cost figure on this page is an average over many spins: one session can end far above or below it.

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