In DragonVale for the Android and iOS systems (iPhone and iPad, etc.),the Opal Dragon is the sixth Gemstone Dragon introduced to the game, representing the month of October. Being a Gemstone dragon, it earns gems instead of gold and can not mate at all.
The Opal Dragon has a base breeding time of 31 hours, sells for 1,500,000 gold, and earns 100,000 XP upon successful breeding at level 14.
To get the Opal Dragon, breed a Lava Dragon with a Mud Dragon during the month of October.
Check out my DragonVale Breeding Guide for more dragon breeding combinations, as well as the combinations you’ll need to make the necessary dragons for the Opal Dragon, and other Gemstone Dragons.
Need some gems at a cheap price? You can actually purchase DragonVale gems on Ebay.