Mineral Specimens,Gemology,Gem Identification Tools,Facet Rough

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Click on a Mineral Family or a Specific Mineral Variety Above for More Information.

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Mineral Family	Actinolite
Hardness	5-6
Refractive Index	1.614-1.641
Specific Gravity	2.95-3.1
Varieties Click a family name or variety for details.	None

Mineral Family	Amber
Hardness	2-2.5
Refractive Index	1.539-1.545
Specific Gravity	1.0-1.02
Varieties Click a family name or variety for details.	None

Mineral Family	Amblygonite
Hardness	5.5-6
Refractive Index	1.612-1.636
Specific Gravity	2.98-3.06
Varieties Click a family name or variety for details.	None

Mineral Family	Ammonite
Hardness	varies
Refractive Index	1.52-1.68
Specific Gravity	2.7
Varieties Click a family name or variety for details.	None

Mineral Family	Beryl
Hardness	7.5-8
Refractive Index	1.56/1.57 to 1.59/1.6
Specific Gravity	2.65-2.9
Varieties Click a family name or variety for details.	Aquamarine Emerald Heliodor Morganite Red Beryl

Mineral Family	Corundum
Hardness	9
Refractive Index	1.77/1.76
Specific Gravity	3.9-4.1
Varieties Click a family name or variety for details.	Padparadscha Ruby Sapphire

Mineral Family	Diamond
Hardness	10
Refractive Index	2.41
Specific Gravity	3.52
Varieties Click a family name or variety for details.	None

Mineral Family	Garnet
Hardness	6.5-7.5
Refractive Index	1.73-1.83
Specific Gravity	3.6-4.32
Varieties Click a family name or variety for details.	Almandine Grossular Hessonite (Grossular) Pyrope Rhodolite Spessartine Spessartite

Mineral Family	Topaz
Hardness	8
Refractive Index	1.64/1.63 to 1.62/1.61
Specific Gravity	3.52-3.56
Varieties Click a family name or variety for details.	Blue Topaz Golden Topaz Green Topaz Imperial Topaz Sherry Topaz

Click on a Mineral Family or a Specific Mineral Variety Above for More Information.

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