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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]
Just as the angle of the sides of a cabochon creates the pressure to hold the stone in place, so there is an overlying principle in setting faceted stones. If one looks at a side view of a round diamond, for example, one will see that there is an outer edge, called the girdle, and the top angles up from there, and the bottom angles down from ...
Carbuncle (/ ˈ k ɑːr b ʌ ŋ k əl /) is another name for a deep red almandine gemstone that has been cut with a smooth, convex face in a method called cabochon. [1] Traditionally, the term referred to any red gemstone, most often a red garnet. [2] Carbuncles and their chimeras have spanned three millennia.
A 17th century English lapidary text. The etymological root of the word lapidary is the Latin word lapis, meaning "stone". [6] In the 14th century, the term evolved from lapidarius, meaning 'stonecutter' or 'working with stone', into the Old French word lapidaire, meaning 'one skilled in working with precious stones'.
The Hudson-Sharp Machine Company is involved in the design and manufacture of plastic bag making machinery, pouch making equipment, and reclosable packaging solutions. [buzzword] With manufacturing and sales throughout the world, Hudson-Sharp has been in business for over 100 years. A partial list of product categories include:
A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut.Cut refers to shape (pear, oval), and also the symmetry, proportioning and polish of a diamond.
The Star of Asia, a large, 330-carat cabochon-cut star sapphire in the U.S. National Gem and Mineral Collection The Hope Diamond. The National Gem and Mineral Collection is one of the most significant collections of its kind in the world.
Utrecht Art Supplies is an art materials manufacturing and chain store company, based in Brooklyn. [1] Utrecht, founded in 1949 in New York City by artist Norman Gulamerian and his brother Harold Gulamerian, sells a large range of art material brands including its own line of products.
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