Stonesetting is the art of securely setting or attaching gemstones into jewellery.
There are two general types of gemstones: cabochon and facet. Cabochons, are smooth, often domed, with flat backs. Agates and turquoise are usually cut this way, but precious stones such as rubies, emeralds and sapphires also may be. Many stones like star sapphires and moonstones must be cut this way in order to see the effects the stones have in them.
The other type of stone is generically called faceted, in which the stone has the general overall shape of the modern diamond, with a thin edge, called the girdle, the top angling up into what is called the crown, and the bottom angling down into what is called the pavilion.
The earliest technique of attaching stones to jewellery was bezel setting. A bezel is a strip of metal bent into the shape and size of the stone and then soldered to the piece of jewellery. Then the stone is inserted into the bezel and the metal rubbed over the stone, holding it in place. This method works well for either cabochon or faceted stones.