RE: Did you knows rubies and sapphires are related? Red corundum is ruby; all other members of this mineral species are called sapphires.

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Did you knows rubies and sapphires are related? Red corundum is ruby; all other members of this mineral species are called sapphires.

in steemit •  7 years ago 

Good information 😊 Thank you for sharing. Just give you up vote @thargyi

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