Best Gems and Diamonds Slots to Play in Demo

This list is ordered by one thing: the published return-to-player figure recorded in our game database, running from 98% at the top down to 96.25% at the bottom. Every title here has been reviewed on this site, and the only details we cite are the ones our database actually holds for each game — name, studio, RTP, and where recorded, volatility and maximum win. Where a figure is not on file, we say nothing about it rather than guessing, so the best gem slots below are ranked on numbers you can check rather than on hype.

Why gem and diamond themes are a slot staple

Gems are the oldest visual shorthand in slot design. A ruby, an emerald, and a sapphire read instantly as low, mid, and high value symbols without a single word of explanation, which is why studios keep returning to them across every format from three-reel classics to modern cluster and hold-and-win engines. The colour separation also matters mechanically: bright, distinct symbol shapes are easy to track when a grid is paying in clusters or cascading, and easy to read at speed on a phone screen. That combination of instant legibility and flexible fit is why nine of the ten games below share the gems and diamonds theme in our database, spanning studios as different as BGaming, Pragmatic Play, Amatic, and PG Soft. The theme tells you almost nothing about how a game behaves, though, which is exactly why the rest of this list leans on recorded figures instead.

The picks

Each entry below sits in RTP order, highest first. Read the studio name alongside the figure — a high published return from one studio and a lower one from another can still produce very different sessions, because the numbers here describe long-run theoretical return, not what any single stretch of play will do.

Merge Up 2

Top of the list on the number that matters most to us: Merge Up 2 carries a published RTP of 98.0%, the highest figure recorded for any gem and diamond title in our database, tied only with the Pragmatic Play entry directly below it. It comes from BGaming, a studio whose catalogue we cover extensively. Our records do not list a volatility rating or a maximum win multiplier for this one, so we won’t guess at how the swings feel — but on the theoretical return figure alone, nothing in this theme is published higher. If you sort a gem shortlist by RTP and nothing else, this is where you start.

Gates of Heaven

Gates of Heaven from Pragmatic Play matches the leader exactly, with a recorded RTP of 98.0%. That is a notably generous figure for a studio whose gem-themed titles more commonly sit in the mid-96s, and it is the reason this one places second rather than further down. It is one of three Pragmatic Play games on this list, which makes it useful as a direct in-house comparison: same studio, same theme category, meaningfully different published return. Volatility and maximum win are not recorded for this title in our database, so treat the RTP figure as the only hard number to weigh here.

Diamond Monkey

Amatic’s Diamond Monkey is filed under the same gems and diamonds theme with a published RTP of 97.49%. That puts it about half a percentage point behind the two leaders and comfortably above the industry-typical mid-96 range, which is why it holds third place. Amatic is a less common name on gem shortlists than Pragmatic Play or BGaming, so this is a genuine alternative if you have worked through the bigger studios’ catalogues already. Our records hold no volatility rating or win cap for it, so the return figure and the studio are what we can stand behind.

Love Gems Hold and Win

Love Gems Hold and Win comes from 1spin4win with a recorded RTP of 97.1%, keeping it inside the 97% band. The studio specialises in compact, classically styled machines, and this is the only 1spin4win title on the list. It sits fourth because the published return is a clear step above the mid-96 cluster further down, though a third of a point behind Diamond Monkey. Beyond the RTP and studio, our database does not record volatility or a maximum win for this game, so those are questions to answer by reading the paytable in the game itself.

Fortune Gems

This is the most fully documented pick on the list, which is why it earns a place even though four titles publish a higher return. Fortune Gems from TaDa Gaming records an RTP of 97.0%, medium volatility, and a maximum win of 375x your stake. That combination tells you something the others cannot: a medium rating points to moderate swings rather than long dry spells, and a 375x cap is modest by modern standards, which is consistent with a game built around steadier, smaller outcomes rather than one enormous hit. If you want to know what you are getting into before you spin, this is the clearest picture here.

Gem Saviour

Gem Saviour from PG Soft (Pocket Games Soft) is recorded at 96.82% RTP. That places it just under the 97% line and marks the point where this list moves from the high-return outliers into more typical territory. PG Soft is a mobile-first studio and this is its only entry in the theme on our list, so it is worth a look purely for the change of design language after four titles from very different developers. Volatility and maximum win are not on file for this game, so the RTP is the figure to compare against the neighbours above and below it.

Gems Bonanza

Gems Bonanza is the second Pragmatic Play title here, with a published RTP of 96.51% and a recorded high volatility rating. Those two facts together are the reason it sits where it does: the return is a point and a half below the leaders, and high volatility means the swings are wider, so results tend to arrive in less predictable bursts than on a medium-rated game. That suits some players and frustrates others, which is exactly why the rating is worth reading before you start. No maximum win figure is recorded for this one in our database.

Joker’s Jewels

Joker’s Jewels is Pragmatic Play’s third appearance, recorded at 96.5% RTP with medium-high volatility. It lands a hundredth of a point below Gems Bonanza but with a slightly softer volatility rating, which makes the pair a genuinely useful side-by-side: near-identical published return, different swing profile. If Gems Bonanza’s high rating sounds like more variance than you want from a session, this is the closer-to-middle option at effectively the same theoretical return. Our records list no maximum win multiplier for this title, so the RTP and volatility rating are the two figures to work from.

Immortal Ways Magic Gems

Immortal Ways Magic Gems from Ruby Play is recorded at 96.3% RTP, placing it ninth. That is within a couple of tenths of the Pragmatic Play pair above it, so the practical difference in published return is small — the reason to try this one is the change of studio rather than a numerical edge. Ruby Play is the smallest name on this list by catalogue size, and this is its only gem-themed entry in our reviewed database. Volatility and maximum win are not recorded, so the RTP figure stands alone here.

Lucky Pharaoh

Lucky Pharaoh closes the list at 96.25% RTP, from Merkur Gaming. It is the one entry filed under an Egypt theme rather than gems and diamonds, and it earns its place as the lowest-RTP title we would still put in front of someone working through this category — 96.25% remains a mainstream figure, and Merkur is a studio with a large land-based heritage that shows in its reel design. Our database records no volatility rating or maximum win for it. Treat it as the crossover pick if the gem imagery starts to blur together.

How these picks compare

The table below puts every pick side by side on the fields our database holds. Blank cells are genuine gaps in our records, not zeros — where a volatility rating or win cap is not published, we leave it empty rather than estimate it.

Read down the RTP column and the spread is 1.75 percentage points from top to bottom — a real gap in theoretical terms, but not one that guarantees anything about a given session. Read across the volatility column and you can see how thin the published data is: only three of the ten games carry a rating in our records, and only one publishes a maximum win. That is normal for this category and it is the main reason we lead with RTP.

What to check before you play

RTP is a long-run theoretical figure. A 98% return means that across an enormous number of spins, modelled over millions of outcomes, the game is designed to return 98% of the money staked into it. It is not a promise about your afternoon, it does not accumulate towards you, and no sequence of spins makes the next one more likely to pay. The house edge is built into that number and stays there regardless of stake size, bet timing, or how long you have been playing. Nothing in this list, and no way of playing these games, changes that.

Volatility describes the shape of the return rather than its size. A medium rating like Fortune Gems’ suggests wins arrive at moderate intervals in moderate sizes. A high rating like Gems Bonanza’s means longer gaps punctuated by larger outcomes, which needs more patience and a bigger cushion to sit through comfortably. Medium-high, as recorded for Joker’s Jewels, sits between the two. Two games with the same RTP and different volatility ratings can feel like completely different products, so when the rating is published it is worth as much attention as the return figure.

Maximum win tells you the ceiling, not the likelihood. Fortune Gems’ 375x cap is the only one recorded here, and a modest ceiling usually points to a game built for frequency rather than one enormous outcome. High-cap games advertise huge multipliers precisely because hitting them is extremely rare. Neither design is better — they are different experiences, and knowing which you have loaded stops the pacing from surprising you.

A few practical habits are worth more than any strategy claim. Check the RTP inside the game itself, because some titles ship in multiple configurations and operators can deploy a lower-return version than the headline figure. Read the paytable before your first spin so you know what the symbols actually do. And be clear-eyed about demo play: it is a good way to learn a game’s rhythm and interface, but it runs on the same odds and tells you nothing predictive about real-money sessions.

Finally, the part that matters most. Gambling is for players aged 18 or over, or the legal age wherever you are. Set a budget and a time limit before you open a game and treat the money as the price of entertainment, the same way you would a cinema ticket — not as income, and never as a way to recover a loss. If chasing losses, hiding play, or spending beyond a set limit starts to feel familiar, step away and contact a national gambling support service. Deposit limits, reality checks, and self-exclusion tools exist at every licensed operator and are worth switching on before you need them.

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