0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What countries other than Australia have opals?
Opals are found in various parts of the world including Ethiopia, Brazil, Mexico, Peru, and the United States (Nevada). Each of these locations produces unique types of opals that vary in color and quality.
What is an Australian export?
Coal, aluminium, gold, iron and iron ore, lead, uranium, wool, fruit, timber, sugar, meat, diamonds, pearls and pearl shell, opals, and so on.
Who made opals?
Nobody MADE opals. They're mined out of the ground.
Which country is the biggest opal exporter?
Australia is the biggest opal exporter in the world, known for its high-quality opals found mainly in regions like Coober Pedy and Lightning Ridge.
Which countries do Australia export Opals to?
Opal is a form of quartz, but in the form of tiny spheres. About 150 - 300 nm in diameter, and packed in such a way as to form a diffraction grating. Australia produces 97% of world production.
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
Are opals natively Australian?
Yes, opals are natively Australian and are found in various regions across the country, such as Lightning Ridge, Coober Pedy, and Andamooka. Australia produces around 95% of the world's opal supply.
Why are opals amorphous?
Opals are amorphous because they lack a crystalline structure. Their formation involves the precipitation of silica spheres in a disordered arrangement, which gives opals their unique play-of-color appearance. This lack of a crystal lattice is what differentiates them from most other gemstones.
Can you melt an opal?
No, opals are a type of mineraloid composed of silica spheres. Opals are sensitive to heat and can crack or lose their play-of-color if exposed to high temperatures. It is not recommended to try melting opals.
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.
