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This is a list of gemstones, organized by species and types. Minerals. There are over 300 types of minerals that have been used as gemstones. Such as: A–B
Lapis lazuli (UK: / ËŒ l æ p ɪ s ˈ l æ z (j) ÊŠ l i, ˈ l æ Ê’ ÊŠ-,-ËŒ l i /; US: / ˈ l æ z (j) É™ l i, ˈ l æ Ê’ É™-,-ËŒ l i /), or lapis for short, is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color.
Another treatment method that is commonly used to treat gemstones is bleaching. This method uses a chemical in order to reduce the colour of the gem. After bleaching, a combination treatment can be done by dying the gemstone once the unwanted colours are removed. Hydrogen peroxide is the most commonly used product used to alter gemstones and ...
2, with royal blue varieties widely used as an ornamental gemstone. Although massive sodalite samples are opaque, crystals are usually transparent to translucent. Sodalite is a member of the sodalite group with hauyne, nosean, lazurite and tugtupite. The people of the Caral culture traded for sodalite from the Collao altiplano. [6]
This list of jewellery types is a listing of most types of jewellery made. ... Prayer jewelry Japa malas; Prayer beads; Prayer rope; Rosary beads; Puzzle jewelry.
Bahia Emerald [2]; Carolina Emperor, [3] [4] 310 carats uncut, 64.8 carats cut; discovered in the United States in 2009, resides in the North Carolina Museum of Natural Sciences, Raleigh, NC, US
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