Crystal and stones » Gemstones hardness and gravity by colour http://www.crystalandstones.com Properties of natural crystal precious stones, birthstones, gemstones, lithotherapy, crystal healing, chakras Wed, 23 Jun 2010 13:27:08 +0000 en hourly 1 http://wordpress.org/?v=3.0 White or colourless stones http://www.crystalandstones.com/imitation-gemstones/gemstones-colours/white-or-colourless-stones.html http://www.crystalandstones.com/imitation-gemstones/gemstones-colours/white-or-colourless-stones.html#comments Wed, 16 Sep 2009 14:58:08 +0000 precious stones http://www.crystalandstones.com/?p=58 White or colourless stones

Hardness. Specific Gravity.

Beryl 7-3/4 2.709-2.81
Corundum 9 3.90-4.16
Diamond 10 3.502-3.564
Jade 7 3.300-3.381
Opal 5-1/2-6-1/2 2.160-2.283
Phenakite 7-3/4 2.965
Quartz 7 2.670
Rock-crystal 7 2.521-2.795
Sapphire 9 4.049-4.060
Spinel 8 3.614-3.654
Topaz 8 3.500-3.520
Tourmaline 7-1/4 3.029
Zircon 7-1/2 4.700-4.880

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Hardness. Specific Gravity.

Amber 2-1/2 1.000
Beryl 7-3/4 2.709-2.810
Chrysoberyl 8-1/2 3.689-3.752
Chrysolite 6-7 3.316-3.528
Corundum (the yellow variety
known as “Oriental Topaz”) 9 3.90-4.16
Diamond 10 3.502-3.564
Garnets (various) 6-1/2-7-1/2 3.4-4.5
Hyacinth (a form of Zircon) 7-1/2 4.7-4.88
Quartz (Citrine) 7 2.658
Sapphire 9 4.049-4.060
Spinel 8 .614-3.654
Topaz (for “Oriental Topaz,”) 8 3.500-3.520
Tourmaline 7-1/4 3.210

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Hardness. Specific Gravity.

Andalusite     7-1/2 3.204
Diamond 10 3.502-3.564
Garnets (various) 6-1/2-7-1/2 3.40-4.50
Hyacinth (a form of Zircon), 7-1/2 4.70-4.88
Quartz (smoke coloured) 7 2.670
Tourmaline 7-1/4 3.100
Zircon (Hyacinth) 7-1/2 4.70-4.88

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Hardness. Specific Gravity.

Carnelian (a variety of Chalcedony) 6-1/2 2.598-2.610
Diamond 10 3.502-3.564
Deep Red Garnet 7-1/4 3.40-4.50
Jasper 7 2.668
Opal (the “Fire Opal”) 5-1/2-6-1/2 2.21
Ruby 9 4.073-4.080
Rhodonite 5-1/2-6-1/2 3.413-3.617
Sapphire 9 4.049-4.060
Spinel Ruby 8 3.614-3.654
Topaz 8 3.500-3.520
Tourmaline 7-1/4 3.024
Zircon 7-1/2 4.70-4.88

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Hardness. Specific Gravity.

Beryl 7-3/4 2.709-2.810
Diamond 10 3.502-3.564
Ruby 9 4.073-4.080
Spinel 8 3.614-3.654
Topaz (“burnt” or “pinked”),
8 3.500-3.520
Tourmaline 7-1/4 3.024

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Hardness. Specific Gravity.

Beryl 7-3/4 2.709-2.810
Diamond 10 3.502-3.564
Dichorite (Water Sapphire) 7-7-1/2 4.049-4.060
Disthene (Kyanite) 5-7 3.609-3.688
Iolite (Cordierite) 7-1/4 2.641
Lapis lazuli 5-1/2 2.461
Sapphire 9 4.049-4.060
Topaz 8 3.500-3.520
Tourmaline 7-1/4 3.160
Turquoise 6 2.800

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Hardness. Specific Gravity.

Aquamarine 7-3/4 2.701-2.800
Chrysoberyl 8-1/2 3.689-3.752
Chrysolite 6-7 3.316-3.528
Chrysoprase (Quartz) 7 2.670
Diamond 10 3.502-3.564
Dioptase 5 3.289
Emerald and Oriental Emerald 7-3/4 2.690
Euclase 7-1/2 3.090
Garnet (see also Red Garnet) 6-1/2-7-1/2 3.400-4.500
Heliotrope (Chalcedony) 6-1/2 2.598-2.610
Hiddenite (a variety of Spodumene) 6-1/2-7 3.130-3.200
Jade 7 3.300-3.381
Jadeite 7 3.299
Malachite 3-1/2 3.710-3.996
Peridot (a variety of Chrysolite) 6-7 3.316-3.528
Plasma (a variety of Chalcedony) 6-1/2 2.598-2.610
Quartz 7 2.670
Sapphire 9 4.049-4.060
Topaz 8 3.500-3.520
Tourmaline 7-1/4 3.148

diamant+fume pendentif+herkimer diamant+non+gemme herkimer+citrin aigue+marine chrysoprase herkimer jadeite
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Hardness. Specific Gravity.

Amethyst 7 2.661
Diamond 10 3.502-3.564
Quartz (Amethyst) 7 2.670
Sapphire 9 4.049-4.060
Spinel 8 3.614-3.654
Tourmaline 7-1/4 3.160

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Hardness. Specific Gravity.

Diamond 10 3.502-3.564
Garnet 6-1/2-7-1/2 3.400-4.500
Jet 3-1/2 1.348
Onyx (a variety
of Chalcedony) 6-1/2 2.598-2.610
Quartz 7 2.670
Tourmaline (not unlike
Black Resin in appearance) 7-1/4 3.024-3.300

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