This natural Multicolor Black Opal originates from Ethiopia and its weight is about 3 carats. The measurements are 12.43mm x 8.57mm x 5.08mm (length x width x depth). The shape/cut-style of this Black Opal is Oval Cabochon. This 2.83ct Black Opal gem is available to order and can be shipped anywhere in the world.
Smoke treatment is a relatively old method of stone treatment that has just recently been reinvented. The process involves wrapping opals into silver foil strips and slowly heating them, allowing the buildup of smoke inside the foil. Carbon formed by the smoke, penetrates deep into the opal stone and stains the original color with deeper and darker tones. Smoke treatment is intended to give the opal brighter play of color, because the bright colors contrast better on darker backgrounds. More about treatments
About Black Opal
Black Opal is considered the most valuable of opal varieties. Black Opal contains traces of iron oxide and carbon elements not found in other common opals. These combined elements give black opal the unique color properties it is famed for. Black Opal is mainly found in Lightning Ridge of NSW, Australia. In 2008, New South Wales declared Black Opal as its Official State Gemstone.
Ethiopia is also known to produce treated black opal. The Ethiopian black opal is treated with a smoking process that darkens the color of the opal. The treatment enhances the play of color, rivaling some of Lightning Ridge’s opals. The treated Ethiopian Black Opal is a great value because it sells for much less than Australian Black Opal.
I recommend this site for anyone looking for loose gems! They were delivered right on time, packaged very carefully. Every gem was exactly what I ordered. Even more beautiful than the photos I viewed. Which are pictures of the actual gem you are buying. Thank you so much Gem Select! I will be buying from them in the future for sure!
These gems are only 2 out of 8 that I plan on buying is an engagement ring. I plan to buy the other 6 if I am satisfied with the first 2. Thank you very much for your service so far. I look forward to receiving my gems and ...
This is my second purchase and if it's as great as my first then they will become my gemstone retailer. If my customer's are happy then I am happy then GemSelect will get the extra business. I loved all the items. I do wish that smaller opal facets were available. The Opal facets I received although great were a bit to orange for my customer. I wished they were a bit more opal like. I did have Moonstone's to offer ...