The gem mineral that is an oxide of aluminum is called corundum. It is composed of aluminum oxide and is commonly found in colors such as blue (sapphire) and red (ruby).
Yes. Ruby is a red gem-quality variety of the mineral corundum.
There is no such thing. Sapphire is a variety of the mineral corundum. Red gem-quality corundum is called ruby.
Sapphire is a variant of the mineral corundum.
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.
Yes, like the mineral Quartz is also a gem.
No US state has the ruby as their official state gem.
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.
The plural of ruby (a gem) is rubies.
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.
Diamond is a mineral and a gem. The main ore of diamond is called kimberlite.
Ruby, the gem variety of the mineral corundum, is one of the most valued gemstones known. Fine rubies are far rarer and command higher prices than diamonds. Rubies have been used for bearings in watchmaking, and we see the application of corundum in abrasives.