Sterling Silver Pink and Green Tourmaline Bead Drop NecklaceMaterial: Genuine Sterling Silver (925 silver, 92. 5% silver content) Necklace Stone(s): Genuine pink and green tourmaline Necklace Length: 18 inches Deep: 1. 5 inches Weight: 14. 7 grams Clasp: Hook Stamp Mark: 925 Serial Number: n20477 Tourmaline is a coveted stone that comes in a wide range of colors from black to pink, green and blue. Crystals which display more than one color together are common. A cross section of a watermelon tourmaline crystal