Dublin Diamonds is a slot machine by IGT. According to the number of players searching for it, Dublin Diamonds is not a very popular slot. Still, that doesn't necessarily mean that it's bad, so give it a try and see for yourself, or browse popular casino games. To start playing, just load the game and press the 'Spin' button. Double Diamond Free Online Slot Machine Review. Double Diamond is a classic video slot, requiring no deposit for the first try. The game has a very simple gameplay, with no complex aspects, specific to new-era slots, that steal from the pure pleasure of turning the reels for fun. The slot machine boasts a simple, yet enjoyable design. Official Club. Download the New Diamond Slots FREE Slot Machine on your Windows Phone or Tablet Today! ** Special Promotion - All Coin Packs are FREE. Play unlimited 24/7 and never run out of coins! If you like true to life slot machines with great payouts then this slot machine game is for you! The App features: * Diamond-Themed slot machine.