Posts Tagged ‘ Red Garnet ’

Red and rose gemstones

September 16, 2009
By precious stones

Red and rose gemstones 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
Read more »

Tags: , , , , , , , , , , , , , , ,
Crystal & stones : Gemstones hardness and gravity by colour | No Comments »

Search Crystal & stones

Gemstones

rutile

Popular articles

Archives