Name of mineral : Beryl Mohs hardness : 7 〜8 Refractive index : 1.577〜1.583 Specific gravity : 2.72 Untreated Gem Quality Size(mm): 2.5 x 2.5、Diameter 2.0 290pcs, Total Weight: 16.24 ct Quality Sample Only Oil-ttreated Gem Quality Size (mm) : L8.0×W7.9×D4.87 Weight : 1.40 ct US $17,000 宝石辞典もくじ 戻る 次ページ