:: SUWA/Dictionary-Gemstones,Quality and Value::

Name of mineral : Beryl
Mohs hardness : 7

~8
Refractive index : 1.577~1.583
Specific gravity : 2.72

Weight: 1.40 ct
Size (mm) : L 8.0 x W 7.9 x D 4.87
Oil-treated
Gem Quality
US $17,000