The British crown jewels contain the Cullinan Diamond, part of the largest gem-quality rough diamond ever found (1905), at 3,106.75 carats (621.35 g). Now popular in engagement rings, this usage dates back to the marriage of Maximilian I to Mary of Burgundy in 1477. Other gemstones:Many precious and semiprecious stones are used for jewellery. Among them are:

By the mid 1940s, 85% of weddings in the U.S. featured a double-ring ceremony, up from 15% in the 1920s. Religion has also played a role: Islam, for instance, considers the wearing of gold by men as a social taboo, and many religions have edicts against excessive display.

Impact on society: Jewellery has been used to denote status. In ancient Rome, for instance, only certain ranks could wear rings; Later, sumptuary laws dictated who could wear what type of jewellery; again based on rank. Cultural dictates have also played a significant role; for example, the wearing of earrings by Western men was considered "effeminate" in the 19th and early 20th centuries.

Amber: Amber, an ancient organic gemstone, is composed of tree resin that has hardened over time. The stone must be at least 1 million years old to be classified as amber, and some amber can be up to 120 million years old.

Materials and methods: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 fine jewellery usually includes gold, white gold, platinum, palladium, titanium or silver.

Conversely, the jewellery industry in the early 20th century launched a campaign to popularize wedding rings for men — which caught on — as well as engagement rings for men - which did not, going so far as to create a false history and claim that the practice had Medieval roots.

Bead embroidery, a popular type of handwork during the Victorian era is enjoying a renaissance in modern jewellery making. Beading, or beadwork, is also very popular in many African cultures.Advanced glass and glass beadmaking techniques by Murano and Venetian glassmasters developed crystalline glass, enamelled glass (smalto), glass with threads of gold (goldstone), multicoloured glass (millefiori), milk-glass (lattimo) and imitation gemstones made of glass. As early as the 13th century, Murano glass and Murano beads were popular.

Materials and methods: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 fine jewellery usually includes gold, white gold, platinum, palladium, titanium or silver.