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Catalin is a brand name for a thermosetting polymer developed and trademarked in 1927 by the American Catalin Corporation of New York City, when the patent on Bakelite expired that year. [1] A phenol formaldehyde resin, it can be worked with files, grinders, and cutters, and polished to a fine sheen. Catalin is produced by a two-stage process ...
Bakelite (/ ˈbeɪkəlaɪt / BAY-kə-lyte), formally polyoxybenzylmethyleneglycolanhydride, is a thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde. The first plastic made from synthetic components, it was developed by Leo Baekeland in Yonkers, New York, in 1907, and patented on ...
History. "Bakelite" and "Parkesine" are both synthetic resins named after their inventors. And so "Faturan", named after its original inventor, became a brand of cast thermosetting phenol formaldehyde resin, similar to Bakelite and Catalin, manufactured by Traun & Son of Hamburg., [1][2] developed in the early 20th century, and produced until ...
Bakelite bangles, necklaces and pins are a good example of how costume jewelry has increased in value. The fire-resistant, castable plastic was made into chunky, colorful jewelry (and napkins ...
Native American jewelry. Native American jewelry refers to items of personal adornment, whether for personal use, sale or as art; examples of which include necklaces, earrings, bracelets, rings and pins, as well as ketohs, wampum, and labrets, made by one of the Indigenous peoples of the United States. Native American jewelry normally reflects ...
John Hardy jewelry [2] was founded in 1975 by Canadian designer-and-artist John Hardy. He visited Bali in the mid-1970s and the island's jewelry-making traditions raised his interest. [3] He began learning the techniques of the local artisans then developed his first pieces by applying new design concepts to traditional Balinese techniques.
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Gemology. Examining a pink sapphire under a gemmological microscope. Gemology or gemmology is the science dealing with natural and artificial gemstone materials. It is a specific interdisciplinary branch of mineralogy. Some jewelers (and many non-jewelers) are academically trained gemologists and are qualified to identify and evaluate gems. [1][2]
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