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There is no such thing. Sapphire is a variety of the mineral corundum. Red gem-quality corundum is called ruby.
Rubies (and sapphires also) are compounds of a crystallized mineral called corundum that consists mostly of aluminum oxide (Al2O3).
its characteristics are hard and colorful when its red they call it ruby!
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.
Rubies are a variety of corundum, the mineral name for aluminum oxide, Al2O3. The red color comes from trace amounts of chromium.
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.
Red corundum is called ruby.
Red corundum is called ruby.
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.
The scientific name for a ruby is corundum. Rubies are a variety of the mineral corundum that get their red color from trace amounts of chromium present in the crystal structure.
A ruby is a crystal form of the mineral corundum.
Ruby represents the red variety of the mineral corundum.
Ruby belongs to the mineral group Corundum
Ruby, a variety of the mineral corundum, has a hardness of 9 on the Mohs scale of mineral hardness.
A ruby.
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 scientific name for ruby is corundum. It is a type of aluminum oxide mineral known for its red color due to traces of chromium.