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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]
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.
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 .
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
An uncut/rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana "Yogo sapphire" is the preferred term for gems found in the Yogo Gulch, whereas "Montana sapphire" generally refers to gems found in other Montana locations. [18] More gem-quality sapphires are produced in Montana than anywhere else in North America. [18]
A carbuncle is one of the last items listed in Sir Thomas Browne's catalogue of lost, rumoured and imaginary books, pictures and objects Musaeum Clausum (circa 1675). Carbuncle is a recurring creature in ongoing video game series Final Fantasy since Final Fantasy V in 1992. While its design ranges from a small, cute mammal to a large terrifying ...
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