JADE, or "yu" in Chinese is also known as the "Stone of Heaven". Comes in many fine nuances of green, but also in shades of white, black, grey, orange, yellow and violet tones, Jade is a desired stone prized for thousands of year in China for its protective powers and healing qualities. It is also said to stimulate creativity and mental agility, and enhance one's health. Product Details - Shape / Type: cigarette holder - handmade: YES - Condition: brand new - Material / Gem: jade - Shipping/Handling by standard int'l shipping (10-18 days delivery) - Grade / Type: 100% Grade A / Type A / Class A - Refractive Index: 1.66 - 1.67 - Specific Gravity: 3.33 - 3.34 - Size : 72mm*9mm - Color Variety: green Color, Icy Variety - Luster: Glassy Luster - Surface Texture: Medium Grain - Condition: Excellent