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2. Gold-filled jewelry - Wikipedia

   en.wikipedia.org/wiki/Gold-filled_jewelry

   Markings and Abbreviations. The related terms "rolled gold plate" and "gold overlay" may legally be used in some contexts if the layer of 14k gold constitutes no less than 5% weight of the item. In the jewelry industry, gold-filled is never abbreviated as "GF" or "gold GF" on product markings.

3. BIS hallmark - Wikipedia

   en.wikipedia.org/wiki/BIS_hallmark

   The BIS system of hallmarking of gold jewellery began in April 2000. The standard specifications governing this system are IS 1417 (grades of gold and gold alloys, jewellery/artefacts), IS 1418 (assaying of gold in gold bullion, gold alloys and gold jewellery/artefacts), IS 2790 (guidelines for manufacture of 14, 18 and 22 carat gold alloys only ), IS 3095 (gold solders for use in manufacture ...

4. Speidel - Wikipedia

   en.wikipedia.org/wiki/Speidel

   It was originally founded in Germany by Friedrich Speidel in 1867 as a manufacturer of gold and silver chains. The Speidel Chain Company was formed in its modern state in the United States in 1904. It was known for its "Ratchet-buckle" watchbands (introduced in 1920), the "Scissors Action Expansion Band" (introduced in 1936), the ladies ...

5. Hallmark - Wikipedia

   en.wikipedia.org/wiki/Hallmark

   A hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals—such as platinum, gold, silver and in some nations, palladium. In a more general sense, the term hallmark is used to refer to any standard of quality.

6. Your Ring Could Be Worth Thousands: How To Spot Valuable ...

   www.aol.com/finance/ring-could-worth-thousands...

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7. Jewellery chain - Wikipedia

   en.wikipedia.org/wiki/Jewellery_chain

   Gold body chain for a slight woman or a girl. Frontal view with an amethyst and four garnets; four other gems are missing (4th or 5th century Romano British, part of the Hoxne hoard) [1] Byzantine body chain found as part of the Asyut Treasure, Egypt c. 600 AD (British Museum) [2] Gold chain from the sixteenth century, Sweden.