In creating jewellery, gemstones, coins, or other precious items are often used, and they are typically set into precious metals. Alloys of nearly every metal known have been encountered in jewellery -- bronze, for example, was common in Roman times. Modern jewellery usually includes gold, white gold, platinum, palladium, or silver.Other commonly used materials include glass, such as fused-glass or enamel; wood, often carved or turned; shells and other natural animal substances such as bone and ivory; natural clay; polymer clay; and even plastics. However, any inclusion of lead or lead solder will cause an English Assay office (the building which gives English jewellery its 'stamp of approval, the Hallmark) to destroy the piece.
Beads are frequently used in jewellery. These may be made of glass, gemstones, metal, wood, shells, clay and polymer clay. Beaded jewellery commonly encompasses necklaces, bracelets, earrings, and belts. Beads may be large or small, the smallest type of beads used are known as seed beads, these are the beads used for the "woven" style of beaded jewellery.
DiamondsDiamonds, long considered the most prized of gemstones, were first mined in India.[citation needed] Pliny may have mentioned them, although there is some debate as to the exact nature of the stone he referred to as Adamas;[5] Currently, Africa, Australia, and Canada rank among the primary sources.
