The cut of a fine opal should be symmetrical. If it's a cabochon, the dome should be well rounded. Domed surfaces give the best play-of-color, and make the stone appear vivid from most viewing angles. If the cabochon is flat, it might be vulnerable to breakage, especially during setting into jewelry.
What is the most beautiful opal?
The Virgin Rainbow
What kind of opal is the best?
- Fire of Australia. Considered the finest uncut opal, it is valued at close to $900,000.
- The Virgin Rainbow. This $1 million opal is the world's most expensive.
- Aurora Australis.
- The Queen.
- Pride of Australia/Red Emperor.
- The Flame Queen.
What color is opal color?
Common opal, sometimes called "potch," is usually colorless or white, but the presence of fine-grained impurities may color it gray, brown, yellow, or red.
How can you tell Natural opal?
Most genuine solid opals have an irregularity in this area curved or bumpy due to their natural formation whereas a man-made stone will be perfectly flat because the two sections are flattened so they can be glued together. Be especially wary if the opal is set in jewellery and you cannot see its back or side.
What is the rarest opal color?
Black opal
Are white opals valuable?
Value. By comparison, white opals are the least valuable form of opal. Opals with a very white body tone also tend to have very pale colour. However, good quality white opal can be incredibly beautiful, and may fetch prices up to AUD $200 per carat.
Is opal considered a color?
Opal
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Pleochroism
Is opal considered a stone?
Opal is an amorphous form of silica, chemically similar to quartz, but containing 3% to 21% water within its mineral structure. Gem grade opals usually have 6% to 10% water content. Opal is a sedimentary stone.
What color is natural opal?
Commonly having a bodycolor of white, yellow, gray, black, or brown; however, the bodycolor of opal can be any color. Some of the most beautiful common opals are red, orange, pink, green,or blue. The play-of-color of precious opal displays spectral colors of red, orange, yellow, green, blue, and violet.