Name of mineral : Topaz Mohs hardness : 8 Refractive index : 1.619~1.627 Specific Gravity : 3.53 Heated Gem Quality Size(mm): L 15.6 x W 10.3 x D 6.43 Weight: 9.09 ct US $14,000 宝石辞典もくじ 戻る 次ページ