Double Diamond slot is a three-reel game from IGT with a published RTP of 95.44%, sitting 0.27 percentage points below the average across this review corpus. That is the complete picture you can build from verified data alone — no bonus rounds are documented, no free-spin triggers are listed, and no max-win ceiling has been published by the provider. If you want a modern feature-heavy game, this is not it. If you want a short, straightforward spin format and you can work with a return figure that trails the field, keep reading.
First look at Double Diamond
IGT has released 114 titles in its catalogue, and Double Diamond ranks 283rd in popularity across the full set of games tracked here — a 98.6th percentile placement that tells you it still attracts serious play volume despite being an older-format machine. The three reels, the Gems and diamonds theme, and the Classics and retro classification all point to a deliberately stripped-down design. You are choosing a slot that removes complexity rather than one that builds it, and that choice shapes everything about the session experience.
Free demo play is available for this title, so you can confirm for yourself how often wins land and how the paytable behaves before risking a single coin.
| Provider | IGT |
|---|---|
| RTP | 95.44% |
| Reels | 3 |
| Theme | Gems and diamonds |
| Free demo | Yes |
How a round plays out
With three reels, Double Diamond follows the oldest slot structure still in production. You place a stake, spin, and read the result across a single row or small set of lines. The provider has not published a specific payline count for this game in the data available here, so treat any figure quoted on third-party pages as unverified.
What the FACTS do confirm is the absence of any listed bonus feature. Many slots layer free spins, expanding wilds, or pick-and-win rounds on top of the base game. No such mechanic is documented for Double Diamond, which means your entire expected return must come from base-game line hits. That concentrates the maths into a single spin loop and removes the variance-smoothing that bonus rounds sometimes provide in other titles.
Reading the 95.44% return figure
An RTP of 95.44% means that, across a very large number of spins — the kind only the provider’s servers can generate — 95.44 pence returns for every £1 wagered. Over 10,000 spins at £1 each, the mathematical house edge costs approximately £456. Over 1,000 spins at the same stake, roughly £45.60. These are averages across millions of sessions, not predictions for yours.
The number that matters for comparison is the gap to the corpus average of 95.71%. Double Diamond sits 0.27 points below that. Against IGT’s own catalogue average of 95.64%, it is 0.20 points below. A quarter of a percentage point does not sound dramatic, but at 5,000 spins of £1 it represents an extra £13.50 of theoretical loss compared to an average RTP game. If raw return rate is your primary filter, there are better options on the market.
Why missing volatility data changes your planning
IGT has not published a volatility rating for Double Diamond in the data available here. That absence is not trivial. Volatility determines whether a game pays small wins frequently or large wins rarely, and without it you cannot forecast session length or swing size from the RTP alone. Two slots can share a 95.44% RTP and deliver completely different experiences: one might return your stake in fifty fifty-pence hits, the other might produce zero wins for two hundred spins and then one large payout.
The demo is your substitute for a missing volatility label. Play it for a fixed number of spins — say 200 — and record how many produced any return at all. That personal hit-rate sample, while small, will tell you more than any estimate could. Many three-reel classics carry high volatility because the absence of bonus features forces the maths into the base-game paytable, but I cannot assert that for this title without a published rating. Treat the game as potentially volatile until your own demo data says otherwise.
Bet range and its bankroll implications
No minimum or maximum stake has been published for Double Diamond in the data available here. This is another gap you must fill at the casino that hosts the game, because the same slot can be configured differently across operators.
What you can do is set a fixed session budget before you open the demo and translate it into spins. If a casino lists a minimum bet of £0.25, a £50 budget covers 200 spins. If the minimum is £0.50, that same budget drops to 100. Fewer spins means less data collected before your money runs out, which matters when you already lack a volatility rating to plan around. Choose the lowest available stake in the demo first, count your spins to a zero balance, and use that count to set your real-money budget ceiling.
Where Double Diamond sits among Gems and diamonds slots
The Gems and diamonds category contains 484 titles on this platform, and Double Diamond’s 95.44% RTP places it in the lower half of that pool. Compare it to Joker’s Jewels, which returns 96.50% — more than a full point better — and you see how quickly a quarter-point deficit compounds over a session.
At the other extreme, Love Gems Hold and Win carries a 97.10% RTP, nearly 1.7 points above Double Diamond. Over 5,000 spins at £1, that gap is roughly £83 of additional theoretical cost. Neither comparison guarantees a better real-money session, but both make the return-rate hierarchy clear.
If you prefer to stay within IGT’s catalogue, Cleopatra returns 95.02% — even lower than Double Diamond — while Da Vinci Diamonds sits at 94.94%. Within this provider’s gem-themed range, Double Diamond is actually the stronger choice on paper. That relative advantage does not erase its absolute position below the corpus average, but it is the fairest way to frame the number.
The honest verdict
Double Diamond is a classic three-reel slot with a return rate that trails both the corpus average and its own provider’s average. It has no published bonus features, no volatility rating, and no confirmed max-win ceiling. The game’s value proposition rests entirely on format — speed, simplicity, and the particular rhythm of a three-reel loop. That is a legitimate reason to choose it over a feature-laden alternative, provided you accept the RTP deficit as the price of that simplicity.
If your priority is squeezing the most playtime from a fixed budget, a higher-RTP title from the same theme pool will stretch your session marginally further. If your priority is the experience itself and you want to confirm the pace suits you, the free demo is available and costs nothing to run.
Play only with money you have decided to spend on entertainment, not money you need to recover. Set a loss limit before you start and stop when you reach it. If gambling stops being enjoyable, contact a support service for your region.
Frequently Asked Questions
Can I play Double Diamond for free?
Yes. The free demo is available on this site, letting you spin the three-reel format without depositing money. Use it to observe hit frequency and session pacing, since IGT has not published a volatility rating that would otherwise guide your expectations for swings.
What is the RTP of Double Diamond?
The published RTP is 95.44%, meaning the game returns 95.44 per every 100 units wagered over a very large statistical sample. That figure sits 0.27 percentage points below the corpus average of 95.71% and 0.20 below IGT's own catalogue average of 95.64%.
Is Double Diamond a high or low volatility slot?
IGT has not published a volatility rating for Double Diamond in the data available here. The three-reel format with no listed bonus features suggests wins come from the base paytable alone, but you should verify session behaviour through the free demo rather than relying on assumptions about the structure.
How does Double Diamond compare to Joker's Jewels?
Joker's Jewels carries a 96.50% RTP against Double Diamond's 95.44%, a gap of just over one full percentage point. Over 5,000 spins at one unit each, that difference translates to roughly 53 units of additional theoretical cost on Double Diamond, making Joker's Jewels the stronger option on return rate alone.
Who makes Double Diamond and what else have they released?
IGT makes Double Diamond, a provider with 114 titles in its tracked catalogue. Among its other well-known slots, Cleopatra returns 95.02% RTP and Da Vinci Diamonds sits at 94.94%, placing both below Double Diamond on paper despite their larger feature sets.
