GOLDEN JELLY OPAL
Outstanding specimen of Golden Jelly Opal for the connoisseur collection. Beautiful golden amber colour large cabochon. Some crazy crack showing on the surface. This Golden Jelly Opal is ready for a jewelled setting for a pendant. It looks better in life than the photos show. This one really is a stunner – We check out Aussie Opals all over the country and rarely come across this type.
Dimensions:
2.25cm x 2.7cm x 1.55cm, 52.8ct.
Opal: SiO2 · nH2O Hydrated Silicon Dioxide.
Opal has been a popular gem for many centuries and has a very interesting structure. The name opal probably is derived from the Sanskrit name for precious stone- upala. Opal is considered a mineraloid because this structure is not truly crystalline. The chemistry of Opal is primarily SiO2 and varying amounts of water. The amount of water varies from 5 -10% and greater. This water can help geologists determine the temperature of the host rock at the time the opal formed.