Amethyst, a variety of quartz, has a hardness rating of 7 on Mohs scale.
Aquamarine is a semi-precious stone that is considered a common gemstone.
Amethyst
Amethyst is a mineral, a form of quartz.
Amethyst is 7.0 on the Mohs hardness scale; it is fairly hard. Amethyst is a member of the quartz family. Most citrine on the market is reported to be heat-treated amethyst.
Amethyst is the birthstone for the month of February.
Its expensive because, Emeralds are super hard to find today, but Ameythyses are found easly in gemstone mines.
I believe it sold for a whopping $100,000,930,099 in a US auction in Oklahoma in 1969.
the kannada word for amethyst is padmaraga
No, amethyst is not a nonmetal. Amethyst is a variety of quartz, which is a mineral and not classified as a metal or nonmetal.
amethyst
Amethyst
Amethyst is cukantiyum in Tamil.
yes, it is. amethyst is a purple type of quartz.
Depends on the particular purplish crystal. Amethyst is not too expensive but other purplish crystals expensive. So it depends.
Aquamarine is a semi-precious stone that is considered a common gemstone.
Amethyst is a semiprecious gemstone, and is not very expensive to buy. When buying an amethyst one must look for an intense and uniform purple color with no inclusions. Even a small inclusion will reduce the price of the gem. Due to its abundant availability there is not much of a difference in medium quality gem and commercial quality. But excellent beautiful natural untreated amethyst can command good price. A small 3 ct stone can cost up to USD 5 per carat whereas a high quality big size amethyst gem stone could cost up to 50 USD per carat.
The birthstone of February is the amethyst.