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Diamond Dozen Slot is currently available only in free play mode in your country.
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Diamond Dozen Slot RTG

Diamond Dozen is a jewellery-themed 20-payline progressive slot which runs on the Real Time Gaming software platform. The game’s wild card is the White Diamond symbol and the scatter is the Blue Diamond symbol. Players can try the slot on this page free of charge or they can choose any of the listed Real Time Gaming casinos to play the game for real money.

Prior to spinning the reels filled with expensive jewels, players need to set their wager. The “Lines” arrows adjust the number of paylines played. The “Bet” arrows alter the number of coins wagered, the minimum of which is 0.01, while the maximum is. In order to start the game, one should press “Spin”. “Au­top­lay­” turns the reels for a predetermined number of times without interruption.

12 Free Games are won when 3 or more Blue Diamonds emerge on the reels. In this round, all prizes are doubled and more White and Blue Diamonds are added to the game. Additional Free Games can be won during the Free Game round.

When 3 or more White Diamonds occur on the reels, the Diamond Delight Feature is activated. Players touch each White Diamond in the trigger combination to reveal a number from 1 to 10. These numbers are then multiplied by each other and then by the triggering wager to uncover one’s total bonus prize.

An arbitrary Progressive Jackpot can be won at the end of any game. These Progressive Jackpot wins are added to players’ other wins.

5 Man symbols on the reels will win a jackpot of 2,000 coins.

Game Play

Bet: Select the coin size.

Lines: Choose the number of active paylines.

Spin: Start the game.

Autoplay: Play for a number of times uninterrupted.

Play game
Software RTG
Slot Type Progressive slots
RTP 95%
Special feature Wild Scatter Free Spins
Slot details
More slot details More details
  • Software

  • Slot Type

  • Paylines

  • Reels

  • Min Coins Per Line

  • Max Coins Per Line

  • Min Coins Size

  • Max Coins Size

  • Jackpot

    Progressive Jackpot
  • RTP

  • Bonus Game

  • Progressive

  • Wild Symbol

  • Scatter Symbol

  • Autoplay Option

  • Multiplier

  • Free Spins

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Diamond Dozen Slot Reviews by Players


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hajnrih 1378 reviews
Reviewed on August 8, 2014


When it comes to Real Time Gaming slots I think you should start dividing them in old and real old slots. Diamond Dozen according to the overall looks of the game must fall in the category really old. I think the creators of the game wanted to make a game that is classy and shines with riches but considering the technology they used they ended up with a third rate slot game. The graphic is quite lame and the sound is no better. I have played this game maybe 4 or 5 times and never had any descent wins to remember.

The two main symbols in this story are the standard Wild White Diamond and the scattered Blue Diamond. During base play the most I have won from these symbols combining was about 15 x bet and nothing more. Usually I would just see my balance sink down like the Titanic. This game like many others has two main features. The free spins bonus comes when you get 3 or more scattered Blue diamond from left to right. I really hate games that don’t award you free spins for 3 scatters anywhere on the screen. It’s hard to look getting 3 scatters but not from left to right. Anyway if you get this feature you will get 12 free spins and all wins are doubled. You can re trigger this feature and get the pick up bonus during the free spins. The most I have on from this feature is about 30 x bet. The second feature of the game is called Diamond Delight and is triggered when 3 white diamonds land anywhere on the reel. By touching every diamond a shower of diamond on the reel reveals a number which are all then multiplied together and multiplied with the total bet. This is a pretty good feature and I have won it once during free spins but even than my total win was only 50 x bet.

Overall a very old game that I think needs to be retired from the RTG offer.
Afi4wins 2006 reviews
Reviewed on July 19, 2014


Anyone heard of the Dirty Dozen? It’s an old action movie, with great actors, great action, and good entertainment. A great movie. Anyone heard of the Diamond dozen? It’s an old jewelry game, without great actors, without great action, without great graphics. It’s just another standard game from the stables of RTG. 1 star down.

The main actors in this movie are the two diamonds– the Wild White Diamond and the Scattering Blue Diamond. The Wild White Diamond has a value of 3000 x the line bet for 5 of them, while the Scatter Blue Diamond has only 100 x total bet value for 5 of them. Such a low price for 5 blue diamonds! Must be zirconia those, not real diamonds. Anyway, these blue stones pay only when appearing left to right from reel 1, unlike the usual scatter-anywhere count, so they aren’t really scatters are they? 1 star down.

So, if you get 3 Scatters on reels 1, 2 and 3, a free spins feature game is awarded - 12 free spins, all wins doubled, and the free spins feature can be retriggered. Get 3 White Diamonds anywhere on the reels, you win a Diamond Delight Feature, whereby each white diamond hides a win multiplier of 1 x to 10 x for an instant cash win. Sounds pretty good. Wonder if it’s possible to get all the three white diamonds revealing a 10 x win multiplier each, for a super 1000 x total bet win? 1 star down.

Anyway, how does playing Diamond Dozen go? To put it frankly, not so good! Yes, I did get the 3 White Diamonds a few times, but all it paid was 2 x, 2 x,and a 3 x, 2 x, 3 x and a 3 x and only once I got 2 x, 3 x and a 5 x, for a 30 x total bet win. That was the biggest so far. As for 3 Blue Diamonds, yes, got that too, and none came with any retriggers. The payouts were just as annoying, at around the 20 x total bet amount. Moreover, trying to get the next free spins feature game took ages and ages. What usually come is a free spins game followed by a Diamond Delight game. What follows next can be either one. I have yet to get two free spins game one after the other. Perhaps this is not impossible, but it didn’t happen during my play, and the next free spins game was way too far apart from the first. Not encouraging at all, making the game play tedious and not entertaining as it should be. Nope, Diamond Dozen isn’t any good like the movie Dirty Dozen. 2 stars down.
yapro 790 reviews
Reviewed on June 25, 2014


Diamond dozen video slot was created by real time gaming software and since slot looking really bad, i must admit that this one was created long time ago.

Game has 20 paylines and everything here is triggered by diamonds and linked to diamonds. I must admit that payouts on this video slot is pretty sick and low, 5 wilds will pay something like 150 x total bet and of course it is really low amount. at least here we have wilds that appear on all reels it is not very often thing in real time gaming video slot. 3 blue diamonds, which is wild, trigger pick feature, every diamond give number from 1 to 10, and every next number multiply this, and then number you get - your win x total bet.

Once i had great chance to score really big, i hit 3 diamonds, first one was 10, second 10 and it is already x 100 total bet and i start pray for great number at last diamond but it shows me only 1... but this 100 x total bet my best result during base game. Also it is possible to trigger free spins by 3+ other diamonds, i was awarded with 12 free spins at x 2 multiplier, but on reels now appear more diamonds, both wilds and scatters. I never had good feature here and can't remember that i get more than 100 x total bet on it. This is old slot and it is hard to get really big win here but i like it, i like this feature with wilds and how it is played. Also random jackpot that can be won at any time just add some fun.

Low variance game from real time gaming , i like it but most likely i will not play it again since i am not happy with low variance slots. Only this wilds feature is interesting here for me.

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