This Pendant is made of sterling silver with 3 and 4 millimetre gemstones of Iolite and BlueTopaz set into the Turtle.. accents of 22 kt gold vermeil accentuates the turtle's armored shell! The Turtle is nestled above a 10 millimeter round selinite. Most Selinite comes from Mexico, Greece And Australia. It is a crystalized form of Gypsum which is used for good luck and protection