Eternal Diamonds

Eternal Diamonds Review

Pragmatic Play has delighted many of its fans with recent news, as it is set to release a title that combines a simple 5x3 grid, medium volatility, an RTP that’s still above the market average, and a host of interesting extras, including three bonus buy features. We’re talking about Eternal Diamonds, which is scheduled for release on September 10, 2026, barring any changes to the provider’s plans. Pragmatic Play has rated the volatility at three lightning bolts out of a possible five and set the return-to-player ratio at 96.5%, which may vary slightly in certain parts of the game.

The rules for forming winning combinations here are based on the classic payline system. That is, winning sequences consist of identical symbols (3 or more) lined up along any of the 50 available paylines. Note that any winning combination must start from the leftmost reel. And there’s an important detail: only the highest-paying combination on each line counts, and repeated lower-paying matches on the same line are not combined. If the respin feature is triggered, its value will be added to the line prize and credited to you at the end of the round.

Eternal Diamonds - Reels Screen

Eternal Diamonds’ prize potential is impressive despite its medium volatility. So here you can win a multiplier of up to x20,000. At the same time, Pragmatic traditionally offers a pretty wide betting range from 0.20 to 240 euros per spin. So if luck is on your side, you could hit the jackpot of 4.8 million euros, and this is truly impressive.

As expected, there are three symbol groups here, with card ranks from 10 to Ace serving as the lowest-paying ones that appear most frequently. It seems like Eternal Diamonds aims to evoke the feel of old-school machines. So the set of higher-paying icons includes the red 7, a golden bell, a horseshoe, cherries, and a double BAR, which offer multipliers of up to x3.75. Pragmatic Play has also added quite a few special symbols, such as Wilds, chips of various colors, and money symbols.

Eternal Diamonds Features

Although we’ve billed this game as a feature-packed slot, it actually revolves entirely around a single respin feature. You can, of course, trigger it in the base game or purchase it directly for a fairly large sum. But don’t be too quick to be disappointed, because Pragmatic has added three independent modifiers that are activated by its colored chip and are capable of pleasantly surprising you with the resulting big prizes.

Colored Chips

Although this slot’s grid looks standard, if you look closely, you’ll notice three colored elements positioned above the reels. They act as so-called “containers,” collecting chips of the corresponding colors that appear on the grid from time to time during the base game. Unfortunately, as with many similar titles, the visual process of collecting chips in the containers is purely decorative. In other words, the actual triggering of modifiers happens randomly, whenever the game decides to do so. This is less transparent than when we’re told, for example, that we need to collect exactly five red chips to trigger the Expanding feature.

Respin Feature with Multiplier Modifier

This feature is triggered by any chips, and it first removes all standard paying icons from the grid. In other words, in this mode, you interact only with money symbols and colored chips. Then, three respins will begin, with any money symbol remaining on the grid locking into place until the end of the respins. Furthermore, every new appearance of a money symbol or any chip resets the respin counter back to three. Although this can go on for a long time, Pragmatic Play offers two possible outcomes. The first is when the respin counter reaches 0, and at that point, the values of all symbols on the screen are added together and paid out to the player as a single amount. But if you’re lucky enough to fill the entire grid with icons, you’ll trigger the Grand Prize with a x10,000 multiplier, which can amount to a huge sum if you’re playing at a high stake.

In this mode, the Multiplier Modifier may also be available to you. If so, during random respins, multipliers ranging from x2 to x100 are added to random positions on the grid. The purpose of any such extra multiplier is simply to be added to the existing value of the cash symbol or chip that happens to be in that same position by the time the Respin Feature ends.

Eternal Diamonds - Respin Bonus Game Screen

Expanding Modifier

So, once the red container is filled with its own chips, a very interesting mechanic will be triggered where a 2x2 section of the grid will function as a separate playing field. For this to happen, a red chip must land in the next round. This mini-grid will function like spinning reels, where the value of the red chip itself is guaranteed to occupy the top-left position of the mini-grid. If you’re lucky enough to fill all 4 cells with cash symbols, the mini-grid will expand to a 3x3 size, and you’ll receive another mini-respin. This can continue several times with successive expansions of the mini-grid to 4x4 and even 5x5. These upgrades can stop at any size, and you’ll simply receive the total value of the red chip that triggered these mini-respins, equal to the sum of all cash values on the mini-grid. And if you’re lucky enough to fill all 25 positions on the mini-grid upgraded to 5x5, you’ll win the Major Prize, paid out with a x625 multiplier.

Extra Spin Modifier

We still have green chips filling the container of the corresponding color, and it is these chips that trigger this modifier. And if it’s active, the main respin round begins. It resets every time it’s triggered again, starting with three respins plus one additional respin for each green chip that randomly activated this feature during the base game. So the duration of the respin round here depends on how many green chips you’ve accumulated before the bonus mode begins.

Buy Feature

Given the above-mentioned modifiers' features, their value in terms of prize potential in this slot cannot be overstated. But the Respin feature is the star of the show here. If you don’t want to wait for it to trigger naturally, you can take advantage of the three bonus buy options offered by Pragmatic Play, though this may be expensive for many players.

Theme & Graphics

Eternal Diamonds is set in the glamorous world of Las Vegas, and as a result, the silhouettes of famous casinos and the city lights are easily discernible in the background. We also see an attractive hostess nearby, wearing a sparkling purple dress and holding a diamond in her hand. All of this sets a luxurious, almost glamorous tone characteristic of Pragmatic Play’s line of classic slot machines. The symbols, with their crisp detailing, subtle shimmer, and three-dimensional highlights, which are especially noticeable on the money symbols and colored chips, look magnificent here. The animations for transitions between the regular mode and respin rounds are smooth and expressive, fitting perfectly into the overall picture. So, the game turned out to be really quite good from a visual standpoint. Plus, it runs smoothly on Android and iOS smartphones and tablets.

Eternal Diamonds Free Play

To get a feel for how often the colored symbols trigger features and just how intriguing the final respin round can be without any risk, you should definitely start by playing the Eternal Diamonds free play version. Here, you’ll be credited with plenty of virtual credits that work exactly like real money. The only difference is that you won’t be able to withdraw your winnings. However, the Eternal Diamonds demo gives you the chance to familiarize yourself with the game’s key features well before its official release. We’ve received a risk-free version of the slot from Pragmatic Play, so you can test it on any device right here on the SlotCatalog platform.

Pros & Cons of the Eternal Diamonds Slot

Our Verdict

A well-worn theme doesn’t always mean uninteresting gameplay, and by all accounts, Eternal Diamonds was created to prove this point. In essence, we’ve got a well-thought-out hybrid of a classic slot machine and the trendy chip-collecting mechanic with respins. This is a truly interesting formula that has proven itself quite well in recent years across several providers, including Pragmatic Play itself.

The stated average volatility seems plausible, with the developer noting that the payout range varies from low to very high. In practice, this means that the vast majority of spins will yield modest line wins. However, truly large payouts will come exclusively through a full-fledged respin round with several active modifiers. And all of these modifiers are genuinely useful. For example, the Multiplier drastically raises the payout cap for individual positions, Expanding turns a single red chip into an entire nested mini-round with a 625x Major prize, and Extra Spin simply extends the round’s duration, increasing the number of chances to land new chips.

Taking all this into account, purchasing Respin 3 with all three modifiers guaranteed objectively seems to be the most interesting option in terms of prize potential. However, the cost of this feature at 250x the bet raises some concerns. Overall, though, Eternal Diamonds is a good fit for those who love the classic aesthetics of fruit slots but want a modern, action-packed bonus engine instead of the effective but now-overused free spins. If you’ve played Wolf Gold or Cowboy Coins, Eternal Diamonds probably won’t surprise you much. Still, this game is worth checking out, and you can see for yourself by spinning the reels in demo mode first.