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it is round ( like and egg), it is really smooth all around it, it comes in: clear through white, gray, red , orange, yellow, green, blue, magenta, rose, pink, slate, olive, brown, and black. it is found in Australia. a opal is an amorphous form of silica related to quartz, a mineraloid form, not a mineral.
Chaz Stroman
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How do they get the birthstone opal to look nice?
Opals are quite rough when they are first mined. They are cut and polished and sometimes oiled to look nice. Doublet opals are often covered with another material such as glass which can add shine.
Why do you mine opals?
Because they are very valuable and are a great trade. Australia mines 98% of the world's opals, and many other countries like to buy them from Australia.
Are opals natively Australian?
No. When opals were first found in Australia, they were not thought to be opals because they were a milky white in appearance. Opals found elsewhere in the world were mostly black.
Why are opals amorphous?
Opals are amorphous because they have no definitve shape. As an example, quartz has a specific crystal shape. Opals can be any shape.
Who made opals?
Nobody MADE opals. They're mined out of the ground.
Who buys rough opals?
If you have some rough opals you would like to sell, you can bring them to a local fine jewelry store to see if they are interested. You can also sell them at online auction sites.
What are food uses of opals?
Opals cannot be used as foods. They are hard, precious stones.
Do opals actually make you invisible?
Neither opals or any other gemstone will make you invisible.
Are opals black?
Some opals are known as black opals, this is when they have a mainly black colour. In general a black opal is very dark blue and has flecks of other colours within
Where can black opals be found in NSW?
Three different types of Opal are found in Australia:Fire Opals are mined in South Australia near Coober Pedy.Black Opals are mined in New South Wales near Lightning Ridge.Boulder Opals are mined in the western Queensland.
Do opals shrink?
No they do not shrink.
Does Coober Pedy mine white or black opals?
Yes. Coober Pedy is still a major producer of opals.
