Introduction: Jade, jade jade, jade also says, hard jade, Burma jade, jade, is called the color showed emerald (emerald) or red (fei) called the. In geological process is formed mainly from hard jade, green pyroxene and sodium chromium pyroxene level of reach jade crystal aggregation more. Jadeite jade high hardness, bright and clean and bright. And good jade color is bright and peace, has high value and collection value, so called "jade the king in" Jade is thought to be able to help a person just by being in contact with it. The feel of cool jade is said to elevate and purify thoughts, to quiet the mind, and to induce a state of contemplation. It is also believed that frequent handling of jade will cause the stone to grow even more beautiful in sheen. According to one Chinese proverb, Jade is cool because it comes from the essence of clear mountain streams. Science says that jade is cool to the touch because it is a non-conductor. Product Details - Shape / Type: Handball / round handball - Material / Gem: Jadeite jade / 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 - Color Variety: Green Color, Icy Variety - Luster: Glassy Luster - Size : 40*40mm - Surface Texture: Medium Grain - Condition: Excellent