To breed a Peridot Dragon in DragonVale, the player has to use a Crystal Dragon and a Cactus Dragon in either the breeding cave or on Epic Breeding Island. As of December 2014, the most recent release for the Peridot Dragon was on August 1, 2014, and it was discontinued on September 1, 2014.
In DragonVale, the Peridot Dragon was a limited release gemstone dragon. It cannot breed with any other dragon, including another Peridot Dragon. When it was first released on August 1, 2012, it was available to players at Level 11. At the December 1, 2013, release the level was changed to a Level 12.
Step 1: Select the breeding dragons and location
A player must have both a Crystal Dragon and a Cactus Dragon available for breeding. There is a higher chance of success if they are bred on the breeding island. An alternate choice is to breed in the breeding cave.
Step 2: Breed during the right month and for the right amount of time
Players should keep in mind that breeding for Peridot Dragons can only take place during the month of August. This is because the peridot is the August birthstone. Also, the breeding time is 31 hours, so be sure that option is available. Once the Peridot Dragon egg appears, place it on Gemstone Island after it hatches.