Synthetic Crystal Opal is composed by 80% silica & 20% resin. It is 12 primary colors with 5 different color patterns each in total 60 colors .It is translucent and sparkling. Can be cut into thickness & shape as the rough opal is ideal for cutting (e.g. cabochon, fancy shape , diamond cut and can be carved with excellent effect, yield is high). It is widely used and and in different product markets such as silver and body jewelry, watches, cosmetic , household and other accessories.
|SYNTHETIC / CRYSTAL OPAL||GALAXY OPAL(no resin)||NATURAL OPAL|
|Elements||80% SO2H20+20% resin||Si02.nH20||SiO2nH20|
|Hardness (Mohs)||4 - 5||5 - 6.5||3 - 5.5|
|Special Gravity||1.80 - 1.90||1.95 - 2.23||1.98 - 2.2|
|Rough Opal||14 - 18mm||10 - 12mm||irregular|