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Corundum. (Sapphire/Ruby/Emery)
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∙ 14y ago
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What is the hardest gem stone?
The hardest gemstone is the diamond.
What are the third and fourth hardest gems?
The third hardest gemstone is ruby and then the fourth hardest is emerald.
What is the 2 second hardest gem stone?
Hardness is the resistance of a gem to scratching and abrasion. It is one of the key qualities of a gemstone. Diamond is the hardest gemstone. The second hardest gemstone is corundum (ruby and sapphire).
What is the hardest gemstone?
Hardness - Hardness may be defined as a material's resistance to scratching. The diamond is the hardest gemstone and the hardest substance known in nature. Nothing can scratch a diamond except another diamond. However, diamonds and many other "hard" gemstones can chip.(Please see the Related Link below.)
What is the difference of pearl gemstone to a diamond gemstone?
Pearl is made by a living organism (an oyster) and is soft. Diamond is made deep in the earth and is the hardest substance known to man.
Is a diamond a gemstone?
Indeed, when polished, it is a valuable gemstone. It is made of pure carbon, and is the hardest substance known. But not all diamonds are of equal hardness - or otherwise it would be difficult to polish it.
Is corundum a gemstone?
Yes, corundum is a gemstone. It is one of the hardest minerals on Earth, second only to diamond, and is the mineral form of aluminum oxide (Al2O3). Corundum occurs in a variety of colors, but the most well-known gem-quality varieties are ruby and sapphire, which are both forms of corundum. Ruby is the red variety of corundum, while sapphire encompasses all other colors of corundum, including blue, yellow, pink, purple, green, and colorless. Corundum is highly valued for its durability, beauty, and rarity, making it a sought-after gemstone for jewelry.
What is the second hardest rock in the world?
Diorite is the second hardest rock in the worl - Vellond
What is the second rarest gemstone in the world?
it is a red diamond
What precious stone has the second letter e?
the answer is gems or gemstone's.
When is the hardest song on Guitar Hero meatallica?
From what I hear, One is the hardest & Master of Puppets is second hardest.
What is the second hardest metal?
tungsten
