Peridot Beautiful Green Round 3mm 18" Necklace to Protect and Regenerate Your Personal Energy Material: Vibrant green natural Peridot necklace 18" long with delicate stones. Peridot is a magnesium silicate (Mg,Fe)2SiO4 Dimensions: Smooth small 3mm stones with slight dimples to catch the light. Lobster Claw is Silverplate. Chakra: Peridot is Heart Chakra. Chinese Medicine it is used for the Gallbladder energy to help in creation of free space and growth. It helps you reinforce personal ideas and supports you to help you in the realizing any resistance that you or others have. Energy Flow: Peridot in Ayurvedic terms is part of the Mercury energy. This is considered a neutral stone. It is therefore considered a balanced stone which improves both physical and emotional and mental. Heart Chakra is considered Venus, Libra (Solar) and Taurus (Lunar) Weighs: 7.5 grams Astrology = Leo, Sagittarius, Scorpio, Virgo Vibrates = 5,6,7 Mohs scale = 6-7