Why are those names improper? They are improper because purple quartz (amethyst) and chalcedony are two different gemological materials. It is often improperly called "amethyst" or "amethyst chalcedony." Purple Chalcedony: Chalcedony can occur in a wide range of purple colors. Enormous deposits of amethyst in South America and Africa provide enough amethyst to keep the price low. That makes it durable enough for use in rings, bracelets, earrings, pendants, and any type of jewelry. It is used to produce faceted stones, cabochons, beads, tumbled stones, and many other items for jewelry and ornamental use.Īmethyst has a Mohs hardness of 7 and does not break by cleavage. It is the purple color variety of quartz that has been used in personal adornment for over 2000 years.Īmethyst is the birthstone of February and an important New Age gem. This numbers should be somewhere in the 2.65 range if you have real amethyst.Amethyst is the world's most popular purple gem. To find specific gravity, divide the weight of the amethyst by the weight of the displaced water. This is the weight of the displaced water. Subtract the beaker's original weight from this number. Weigh the beaker again, with the displaced water in it. ![]() Put in the amount of water that the mineral displaced. Remove the amethyst and drain the water.Subtract the level the water is at now from its original level. Then, partially fill the beaker with water and write down the amount of water, as measured by the beaker. Then, write down the weight of the amethyst. To start, write down the weight of the beaker.X Research source You can measure specific gravity with a beaker, big enough to fit your piece of amethyst in, and a scale. ![]() ![]() For amethyst, specific gravity should be around 2.65. Specific gravity is a term used by jeweler's to ascertain the rough density of a gem. X Trustworthy Source Gemological Institute of America Nonprofit institute responsible for gemological research and education and setting gemstone buying and selling standards Go to source Authentic amethyst may have some color zoning, which can lessen its value, that's typically visible when the gem is laid flat on a white surface. X Research source This may occur in amethyst gems. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |