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2. Roman jewelry - Wikipedia

   en.wikipedia.org/wiki/Roman_jewelry

   Examples of jewelry worn by the higher social classes include solid gold necklaces, earrings, bracelets, rings, and bulla with many variations within these classes of jewelry. Some bracelets were used without clasps (solid gold snake bracelets), while others used gold pins or small gold screws to fasten the bracelet to the wrist. [5] [6]

3. Gold-filled jewelry - Wikipedia

   en.wikipedia.org/wiki/Gold-filled_jewelry

   If the gold layer is 12 kt or higher, the minimum layer of karat gold in an item stamped gold-filled marks must equal at least 1 ⁄ 20th the total weight of the item. The most common stamps found on gold-filled jewelry are 1 ⁄ 20th 12kt GF and 1 ⁄ 20th 14kt GF. Also common is 1 ⁄ 10th 10kt. These standards are for modern gold-filled items.

4. Jewellery - Wikipedia

   en.wikipedia.org/wiki/Jewellery

   Jewellery (or jewelry in American English) consists of decorative items worn for personal adornment such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the clothes.

5. Black Hills gold jewelry - Wikipedia

   en.wikipedia.org/wiki/Black_Hills_gold_jewelry

   The resulting gold bars are then readied for rolling. The alloyed gold bars are rolled by presses to different thicknesses for different types of jewelry. Each part is individually stamped out of the rolled gold sheets using patterns and dies. The solid gold leaves and other patterns are then added to a cast jewelry base.

6. Granulation (jewellery) - Wikipedia

   en.wikipedia.org/wiki/Granulation_(jewellery)

   There are three basic techniques that may be used to attach granules to a metal surface: hard soldering, fusing and colloidal soldering. The metals used in granulation are usually gold and/or silver alloys of high purity – alloys below 18 kt. gold and sterling silver being unsuitable. With each technique, the process begins with the making of ...

7. Colored gold - Wikipedia

   en.wikipedia.org/wiki/Colored_gold

   White gold's properties vary depending on the metals used and their proportions. A common white gold formulation consists of 90% wt. gold and 10% wt. nickel. [3] Copper can be added to increase malleability. [2] The alloys used in the jewelry industry are gold-palladium-silver and gold-nickel-copper-zinc.