Ruby is a precious stone consisting of corundum in color varieties varying from deep crimson or purple to pale rose.
Corundum is extremely hard aluminum oxide.
Ruby - rock band - ended in 1984.
Ruby - rock band - was created in 1976.
Yes, there is a song called Rock n Roll Ruby.
Ruby isn't classified by how old it is, it depends on the ruby to find out how old it is
Ruby Falls is located within Lookout Mountain in Tennessee, which is primarily made up of limestone. The underground waterfall within Ruby Falls has carved its way through the soft limestone rock over centuries, creating the cavern and waterfall that visitors see today.
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Aluminum Oxide
A ruby is a gem. It's like asking, "what is the geometric shape of a rock?" You make the rock or ruby or diamond or whatever have a shape when you cut it. It doesn't just come with one naturally.
Ruby is an Oviraptor.