Peridot is a fresh lime green gem form of the mineral Olivine. Peridot crystals are found in smaller sized, friable stones. The gemstone's natural green coloring is caused by Iron inclusions. Peridot is known as the Smiling Stone, bringing happiness and reducing anger, rage and fear. Peridot healing crystals can help in dealing with depression, jealousy and anxiety. If you have lost something important, using Peridot healing crystals can help you to find it again. It is a visionary stone, bringing understanding of destiny. Peridot opens and balances the Heart Chakra.