Ads
related to: rare gemstones color chart
Search results
Results From The WOW.Com Content Network
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;
Color grading of diamonds was performed as a step of sorting rough diamonds for sale by the London Diamond Syndicate. As the diamond trade developed, early diamond grades were introduced. Without any co-operative development, these early grading systems lacked standard nomenclature and consistency. Some early grading scales were; I, II, III; A, AA, AAA; A, B, C. Numerous terms
Peridot is one of the few gemstones that occur in only one color: an olive-green. The intensity and tint of the green, however, depends on the percentage of iron in the crystal structure, so the color of individual peridot gems can vary from yellow, to olive, to brownish-green. In rare cases, peridot may have a medium-dark toned, pure green ...
The Sunrise Ruby [1] [2] [3] has been the world's most expensive ruby, most expensive coloured gemstone, and most expensive gemstone other than a diamond [2] [3] [4] until the discovery of the Estrela de Fura. Originally mined in Myanmar, its current name is derived from a poem of the same name, written by the 13th-century Sufi poet Rumi. [5]
Well, the month of June means not one, not two, but three of the most gorgeous birthstones of the year: the classic pearl, the celestial moonstone and the ultra-rare alexandrite. These glam gems ...
Prasiolite is a rare stone in nature; artificial prasiolite is produced from amethyst. [4] Most amethyst will turn yellow or orange when heated, producing heat-treated amethysts which are often marketed as citrine , but some amethyst will turn green when treated.