andalusite
Photo courtesy of High Life Living Luxury
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Species: Andalusite
Mohs Hardness: 6.5 to 7.5 out of 10 Color: Black, white, gray, green, yellow, pink, brown and orange RI: 1.634 to 1.643 Birefringence: +/- 0.005 SR/DR/AGG: DR Clarity Type: Type II Pleochroism: Strong, colors vary depending on gem's bodycolor Spectrum: Not diagnostic Fluorescence: Variable, not diagnostic SG: 3.17 |