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As amethyst is readily available in large structures, the value of the gem is not primarily defined by carat weight. This is different from most gemstones, since the carat weight typically exponentially increases the value of the stone. The biggest factor in the value of amethyst is the color displayed. [41]
Emeralds “One of the precious gemstones, emeralds have long been prized for their otherworldly beauty, vivid green color, and cooling-to-the-eye properties,” Salzer says.
Charoite is translucent lavender to purple in color with a pearly luster. Charoite is strictly massive in nature, and fractures are conchoidal.It has an unusual swirling, fibrous appearance, sometimes chatoyant, and that, along with its intense color, can lead many to believe at first that it is synthetic or enhanced artificially.
Gemstones are often treated to enhance the color or clarity of the stone. [40] In some cases, the treatment applied to the gemstone can also increase its durability. Even though natural gemstones can be transformed using the traditional method of cutting and polishing, other treatment options allow the stone's appearance to be enhanced. [41]
Color (beta) Automatic. Light. Dark. This page is always in light mode. ... Gemstones of the World revised 5th edition, 2013 by Walter Schumann ISBN 978-1454909538;
In 2016, jeweler Olivia Young of Ouroboros sold a red spinel ring for £6,000 ($7,700). Last year, the client’s insurance company paid out £30,000 ($38,400) to replace it.