|Dimensions (mm)||18 x 8 x 2mm|
|Weight (carats)||4.45 carats|
Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. Opal is the national gemstone of Australia.
Beautiful stone, so happy with purchase. My mailing info was messed up when I made the order, the vendor contacted me immediately to fix the issue and send my my stone. Very happy with the purchase and vendor.
|Starts||22nd Oct 2019 10:56am PDT|
|Express Shipping||$22.00||8 Days|
|Standard Shipping - Tracked||$12.00||15 Days|
|Shipping Insurance all providers $0.00 (optional)|