Designs And Craftmenship

In creating jewellery, gemstonescoins, or other precious items are often used, and they are typically set into precious metals. Platinum alloys range from 900 (90% pure) to 950 (95% pure). The silver used in jewellery is usually sterling silver, or 92.5% fine silver. In costume jewellerystainless steel findings are sometimes used. Other commonly used materials include glass, such as fused-glass or enamelwood, often carved or turned; shells and other natural animal substances such as bone and ivory; natural claypolymer clay; Hemp and other twines have been used as well to create jewellery that has more of a natural feel. However, any inclusion of lead or lead solder will give a British Assay office (the body which gives U.K. jewellery its stamp of approval, the Hallmark) the right to destroy the piece, however it is very rare for the assay office to do so.

Diamonds were first mined in India.Pliny may have mentioned them, although there is some debate as to the exact nature of the stone he referred to as Adamas.In 2005, Australia, Botswana, Russia and Canada ranked among the primary sources of gemstone diamond production. There are negative consequences of the diamond trade in certain areas. Diamonds mined during the recent civil wars in Angola, Ivory Coast, Sierra Leone, and other nations have been labelled as blood diamonds when they are mined in a war zone and sold to finance an insurgency