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Category: Gemstones and Mineral Identifications | Science of Crystals
What is Chatoyance? or Cat’s-Eye Effect in Gemstone and Minerals
Today we will discuss gemstones and mineral information regarding chatoyance effect. Let us first see what is actually chatoyance? What is Chatoyance in Gemstones? Chatoyance is derived from the French word “chatoyer” which means cat and “oeil” means eye. Chatoyance is a bright streak or a bright band of light across the surface of a cabochon. It is…
 What is Geode?
What is Geode? Geodes are geological occurrence of minerals in particular form after a particular process. They are formed within volcanic and sedimentary rocks. They are usually hollow inside, shape is usually circular in which there are formed lot of crystals or mineral matters. Crystals formation appears because of the filling of vesicles by minerals…
Grandidierite: Rare Gemstone From Madagascar – Origins, Properties, and Market Trends
Introduction to Grandidierite Gemstone Grandidierite is one of the rarest gemstones with blue blue-green hue. It is popular for its remarkable pleochroism and rarity. Prior to recent discoveries, significant sizes of facet-grade quality stones were almost nearly non-existent. Grandidierite was first discovered in 1902 by a famous mineralogist ” Antoine François Alfred Lacroix”. After discovery, …