0
Given its remarkable hardness (second only to diamond on Moh's scale), any corundum is of course economically valuable for industrial grinding purposes just as long as it's not radioactive. However, corundum crystals of much greater value can be found as the gemstones ruby and sapphire. As gems these are most valuable when found as large, clear single crystals with appealing color characteristics and few "defects."
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
What are gems such as diamonds and emeralds called?
They are valuable because they are rare and take a long time to process to create a good looking stone. They are classified as "gemstones".
Do bats excrete through the mouth?
No, bats excrete the same way humans do. Bat feces are called guano and are a valuable additive to fertilizer.
What is cow hair called?
There are not a lot of materials made from cow's hair. The hair can be used in making things such as shoes or other clothing items, but it is not very valuable or needed.
What is the most valuable reptile?
The most valuable reptile is the green sea turtle, partly because it is endangered.
What is the most valuable rock mined in Indiana?
coal.
Is corondum a mineral?
Yes, it is a rock-forming mineral, a crystalline form of aluminum oxide (Al2O3) with traces of iron, titanium and chromium. It can form transparent crystals which if colored red are called rubies and if colored blue are called sapphires.
What are diamonds called ending with able?
Diamonds are VALUABLE
What is a mineral called if it is considered valuable and can be made into something such as steel?
It called ores
What mineral is called if it is considered valuable and can be made into something such as steel?
It called ores
Who is a person who kills buffalo for their valuable hides?
Aperson who kills buffalo for their valuable hides is called a Buffalo Hunter.
Why is tungsten valuable?
Because it is called 'Tungsten' Duhhh
A rich deposit of a valuable mineral is called an?
ore
Is tungsten valuable?
Because it is called 'Tungsten' Duhhh
How is called a mineral when considered valuable?
Minerals that are considered valuable and can be made into something such as steel are called ores. Iron ore often exists alongside coal beds.
What is the most valuable form of coal?
is a coal called Anthikal
What are valuable contributions of chemistry to society and industry?
it is called chemistry
What is raw material containing valuable minerals called?
Ore
