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Opal and amber are not minerals.
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Related Questions
Can a gem be a mineral?
Yes, like the mineral Quartz is also a gem.
Is gypsum a gem?
its an mineral
What is in a sapphire gem?
A sapphire gem is mainly composed of the mineral corundum and other trace mineral impurities that give it its color.
Are dimoands a mineral or a rock?
a diamond is a mineral (also is a gem)
What is a highly priced mineral?
Gem
Is nickel a gem?
No, nickel is a mineral.
Is diamond is a gem mineral?
Yes.
What is the web address of the Houston Gem And Mineral Society in Houston Texas?
The web address of the Houston Gem And Mineral Society is: http://www.hgms.org
What is the web address of the Fallbrook Gem And Mineral Museum in Fallbrook California?
The web address of the Fallbrook Gem And Mineral Museum is: http://www.fgms.org
What gem mineral is an oxide of aluminum?
Ruby and sapphire are both gem varieties of the mineral corundum, an aluminum oxide.
What is the phone number of the Houston Gem And Mineral Society in Houston Texas?
The phone number of the Houston Gem And Mineral Society is: 281-530-0942.
What is the phone number of the Fallbrook Gem And Mineral Museum in Fallbrook California?
The phone number of the Fallbrook Gem And Mineral Museum is: 760-723-4125.
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