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the ruby
Wiki User
∙ 14y ago
A gem in the corundum family is a type of gemstone that belongs to the mineral species corundum. Examples of gemstones in the corundum family include rubies, which are red corundum, and sapphires, which come in various colors except red. These gemstones are prized for their hardness (second only to diamonds) and beautiful colors.
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Can rubies be blue?
No. Ruby is a red gem-quality variant of corundum. Gem-quality corundum that is blue or any color other than red is called a sapphire.
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.
What are some common uses of corundum?
Corundum has some electrical uses, and non gem quality material, such as emery, is extensively used as an abrasive because of its high hardness.
What is the plural of corundum?
Corundum.
What is the mineral group of sapphire?
Sapphire comes from the corundum mineral family, which is an aluminum oxide (Al2O3). Corundum consists of pure aluminum oxide, it also contains trace amounts of other elements such as iron, titanium and chromium.
What substance is a sapphire?
Sapphires are Corundum, the same gem family as Ruby.
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.
Can rubies be blue?
No. Ruby is a red gem-quality variant of corundum. Gem-quality corundum that is blue or any color other than red is called a sapphire.
What is corundum used in?
The overwhelming use, by far, of corundum is in the manufacture of abrasives--sandpaper, grinding wheels, etc. Gem grade corundum is used in jewelry.
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.
What gem mineral is an oxide of aluminum?
Ruby and sapphire are both gem varieties of the mineral corundum, an aluminum oxide.
What is the second hardest mineral on the Mohs scale after diamond?
On the Mohs scale of mineral hardness, corundum is listed as a 9, below diamond which has a rating of 10.
What is in a sapphire gem?
A sapphire gem is mainly composed of the mineral corundum and other trace mineral impurities that give it its color.
What is the value of corundum?
The value of the mineral corundum will vary according to its appearance. Gem quality corundum is highly valued. Non gem quality corundum has many industrial uses and is much less highly valued.
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.
How is a sapphire dependent on minerals explain?
Sapphire is a gem-quality variant of the mineral corundum.
Is there such thing as ruby?
Yes. Ruby is a red gem-quality variety of the mineral corundum.
