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A cabochon (/ ˈ k æ b u ʃ ɒ n /; from Middle French caboche 'head') is a gemstone that has been shaped and polished, as opposed to faceted. The resulting form is usually a convex (rounded) obverse with a flat reverse. [1] Cabochon was the default method of preparing gemstones before gemstone cutting developed. [2]
Lapidary (from the Latin lapidarius) is the practice of shaping stone, minerals, or gemstones into decorative items such as cabochons, engraved gems (including cameos), and faceted designs. A person who practices lapidary techniques of cutting, grinding, and polishing is known as a lapidary or lapidarist .
Download as PDF; Printable version; In other projects Wikimedia Commons; Wikidata item; ... This is a list of gemstones, organized by species and types. Minerals
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Zultanite rough crystal and gemstones Zultanite is a gem variety of the mineral diaspore , mined in the İlbir Mountains of southwest Turkey at an elevation of over 4,000 feet. [ 1 ] The mineral's name is a trade name and is equivalent to the trade name Csarite.
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...