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What gem mineral is an oxide of aluminum?
Ruby and sapphire are both gem varieties of the mineral corundum, an aluminum oxide.
Is there such thing as ruby?
Yes. Ruby is a red gem-quality variety of the mineral corundum.
What is a red sapphire?
There is no such thing. Sapphire is a variety of the mineral corundum. Red gem-quality corundum is called ruby.
Is a sapphire a mineral?
Sapphire is a variant of the mineral corundum.
Can a gem be a mineral?
Yes, like the mineral Quartz is also a gem.
A ruby is a natural gem?
A ruby is a naturally occurring crystal of the mineral corundum. Rubies can also be created in laboratory settings as well. The chemical composition and crystalline structure is identical.
What state is their state gem ruby?
No US state has the ruby as their official state gem.
What percentage of rubies is corundum?
100% of rubies are corundum. "Ruby" is a name made up by the gem trade for the mineral known as corundum, when it is red.
What is the plural of ruby?
The plural of ruby (a gem) is rubies.
Is ruby a mineral or a rock?
The commercial name of the ruby is 'ruby rock'. In geological terms it is called as Goodletite. It is commonly found in Westland and New Zealand.
Is a dimand a gem a mineral or an ore?
Diamond is a mineral and a gem. The main ore of diamond is called kimberlite.
Is gypsum a gem?
its an mineral
