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- Comet Ring Mfg. Co. Inc.
Country City Buffalo NY
Symbol cartouche, frame, pear shape, shape
Shape cartouche, frame, pear shape, shape
Era c.1950
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- Koslow Inc., Nat
Country City New York NY
Symbol crown, diamond, gem, gemstone, pear shape
Shape diamond, pear shape
Era c.1950
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- Theberath & Co.
Country City Newark NJ
Shape pear shape, triangle
Symbol arrow, pear shape, triangle
Era c.1915