宝石●玉石宝石和玉石以其美丽、稀少，深受人们的喜爱。宝石是大自然赐予人类的一种天然的矿物单晶体。具有颜色瑰丽、透明度好、硬度大于７，经琢磨成型，有奇异的光学效应和稀有的特性。具有鉴尝、使用和珍藏的价值。钻石、红宝石、蓝宝石、祖母绿、海蓝宝石和金绿宝石... Gems ● jade gems and jade with its beautiful, scarce, loved by the people. Gemstone is a kind of natural mineral single crystal that nature gives to human. With magnificent colors, good transparency, hardness greater than 7, after pondering molding, there are strange optical effects and rare characteristics. Has the value of taste, use and treasure. Diamonds, rubies, sapphires, emeralds, aquamarine and emeralds ...