It is really good for the environment and it helps the Aus economy
People like them and use them in jewelry and buy them.
Not really. They are soft stones, even for jewelry, but the mining of them may be causing problems.
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You get the materials
the benefits are it will make you rich, it can be used for jewellery.
You make money from it.
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.
You dont die as easily
people can trade for goods such as spices
Providing industrial materials
Opals are amorphous because they have no definitve shape. As an example, quartz has a specific crystal shape. Opals can be any shape.
Nobody MADE opals. They're mined out of the ground.
Opals cannot be used as foods. They are hard, precious stones.