Diamond Dozen Review

Luxury-themed slot games might be a dime a dozen, but this one is truly something special. With huge bonuses, wilds, scatters and a progressive jackpot, you'll be doing more than just imagining a diamond, but winning enough to buy one. Find out more about the excellent gameplay and design in our Diamond Dozen slot review.

14 Active Players
Rating 92%
Diamond Dozen Logo

Game Info


Real Time Gaming


Luxury, Diamonds, Glamour





Max Bet


RTP (%)


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Our Verdict

Diamonds may be a girl's best friend, but we're sure that all players will become friendly with the big wins you'll find on the reels of Diamond Dozen.

What we like
  • Rewarding progressive jackpot hits randomly
  • Free spins with multipliers and retriggers
  • Instant cash prize adds to the bankroll
  • Stunning graphics and audio effects
What Can Improve?
  • Similar features to other slot games
  • Progressive jackpot varies from one casino to the next

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About Diamond Dozen

Even though it's one of the older slots in RTG's library of games, Diamond Dozen is still a popular and lucrative game with a loyal following. The bright colors are set against a dark background, with a luxurious theme that automatically makes you feel wealthy as you play. Thanks to its old-school slot style and great payouts that hit regularly, plus a progressive jackpot that can add even more wins to your bankroll, there are many reasons to start spinning the 5 reels and winning big.

Shine like a diamond when you win a massive payout on one of the 20 paylines in this game.

A luxurious theme that will make you feel like you're dripping in diamonds makes all of us feel rich.

Rating 92%
- James Hadley, Editorial Assistant
  • Rewarding progressive jackpot
  • Free spins with 2x multiplier
  • Additional bonus features with instant wins
  • Retrigger free spins for even more payouts

When you find three or more Blue Diamonds scattered across the reels, you'll trigger the free spins bonus. This gives you 12 free games with a 2x multiplier, plus more White Diamond and Blue Diamond symbols added to the reels. You can trigger the Diamond Delight feature during your free spins, as well as win yet more free spins. This can be an incredibly lucrative bonus, especially if you trigger more free spins and just keep on winning big.

The other bonus, the Diamond Delight Feature, occurs when three or more White Diamond symbols appear anywhere. White Diamonds are already the wild symbol, so having them trigger an extra bonus is particularly rewarding. Touch each White Diamond to reveal a number between 1 and 10. The numbers are then multiplied by each other and the trigger bet to give you a total instant cash prize.

Diamond Dozen screenshot Diamond Dozen screenshot Diamond Dozen screenshot Diamond Dozen screenshot

Where To Play Diamond Dozen

You can play this game at many of the best online casinos that offer the RTG library of games. You'll get the option to download the software to your computer or mobile, or else you can play no download Diamond Dozen in your browser if that's what you prefer. No matter which way you play, you'll be able to enjoy the same great gameplay, as well as access to the progressive jackpot.

How We Review

All our slot reviews are kept detailed and unbiased by evaluating games across a variety of criteria. These elements include:

Bonuses & Extras: What does the game give to players to distinguish itself from other slots? Which bonuses and rewards can you expect.

Payouts & Jackpots: Are all the winnings kept in the progressive, or can you get some big payouts along the way? How much can you expect to win.

Compatibility & Availability: Will this game work on a variety of different mobile and computer platforms? How easy is it to find at the best online casinos.

RTP: Slots are tons of fun and incredibly exciting, but they need to also pay out consistently. How much can you expect to win or lose with this game?

Progressive Jackpots

Like many RTG slots, Diamond Dozen has a feature of a progressive jackpot. This jackpot isn't tied to a centralized network, but rather is unique to each online casino. This is just part of why it's always a good idea to find the best possible casino online. You can hit the progressive randomly, at any point in the game. While the wins usually aren't as massive as progressive jackpots on a unified network, we're sure that players will be more than happy with an extra $5,000 in their pockets, the average across most reputable casinos.

Graphics and Design

As an older slot from RTG, you'd think that the icons and design would look outdated, but actually they are as timeless as diamonds. You'll find the male and female characters, as well as a diamond ring, rose, purse and of course the white and blue diamond symbols. The reels are padded out with playing card symbols, they are diamond - studded and seem to fit the theme rather well. With a soundtrack that adds to the immersion and exhilaration without ever becoming grating, this is the kind of slot design that other games could learn from in its timelessness.

Payouts and Prizes

You can get some excellent payouts in Diamond Dozen. Five white diamond icons on a line pay out 3,000 coins, with the next big wins coming in at 2,000 and 1,000 coins. These are just the base wins that you can expect, even before the excellent bonus round with the free spins and multiplier, or the instant win bonus. The pay table continues to be generous all the way down, with five of a kind of the lowest - paying symbol still giving you 100 coins. Because you can wager anywhere from $0.01 to $5 a coin, the payouts could be rather impressive.

Play on Mobile

Spin the reels whenever and wherever you feel like when you play on your smartphone or tablet. You can play Diamond Dozen on mobile and get the truly liberating experience of playing on the go or at home. When you visit your favorite online casino, you can swap and change between computer and mobile seamlessly using the same account.

Real Time Gaming (RTG) is always improving its mobile experience, with a specific focus on providing games that work well across all platforms. Thanks to the latest instant play technology, you'll be able to play on modern iOS, Android, Kindle Fire, Windows and BlackBerry smartphones and tablets. Even though they focus on making sure their games work for everyone, the best experience will usually be found on an Apple iPhone or iPad, or an Android device like those made by Samsung, LG, Huawei or Motorola.

If you're a fan of playing Diamond Dozen on the go, it's still important to be aware of where you are, especially when making a sensitive transaction. Make sure that you aren't on an open WiFi network for deposits or withdrawals as the connection might not be secure. Also, slots can use more battery power than some of your other apps, so if you like to play for extended sessions, you'll want to be prepared to charge your device.

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Play Diamond Dozen Online Today

As evidenced throughout this Diamond Dozen slot review, this is a timelessly excellent slot game with great gameplay and rewarding payouts. With wilds that also trigger a bonus round, plus free spins with multipliers, you're sure to embrace the luxury of the diamonds on the reels. Start playing Diamond Dozen today at a top - rated online casino and see why this game could become your new favorite slot.