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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.
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What are rubies made of?
Rubies are made of corundum (aluminum oxide, Al2O3) with trace impurities that give them their color.
What is a rubies mineral class?
Rubies are a color variant of the mineral corundum, which is an oxide.
Are there green rubies?
No. Rubies are specifically a red variant of corundum. Any gem-quality corundum that is no red is considered a sapphire. Green sapphires do exist.
What is corundum?
Corundum is a hard mineral, a form of aluminium oxide which occurs in sapphires and rubies.
What is the relation between rubies and sapphires?
Rubies and sapphires are both gem-quality variants of the same mineral: corundum. The only difference is in color. Red or pink corundum is ruby. Corundum in other colors is sapphire.
What are facts about rubies?
the facts are that its has a hardness of 9 and is part of corundum
What is the compositon of ruby?
The main component of rubies is the mineral corundum.
What are the varieties of Corundum?
Corundum comes in just about every color of the rainbow. Every color but red is considered sapphire. Red corundum is the mineral that forms rubies.
What is a mineral class?
Rubies are a color variant of the mineral corundum, which is an oxide.
What is the mineral group for ruby?
Rubies are part of the corundum mineral group.
What is the substance of sapphires?
Sapphires are the gemstone version of the mineral corundum. Sapphires come in every color except red corundum which are considered rubies.
What countries is corundum found in?
Corundum is the mineral form of sapphires and rubies. It comes in every color of the rainbow. Red corundum is a ruby. Every other color is considered sapphire. Corundum is found all over the world from Africa to Asia to the United States but some of the most beautiful are found in Sri Lanka. You will often see these referred to as Ceylon Sapphires or Rubies.
