Sculptural pieces like this silver horse necklace first start with a block of wax. The wax is carved or molded, depending on its hardness. It then goes through a casting process where a single copy of it is made in sterling silver. This copy is called the master model and is quite precious since the production of the jewellery piece depends on it. If for some reason the casting process fails, the wax has to be recreated by hand, otherwise a mold is made of the master model and from that mold, more waxes can be created and cast into sterling silver or whatever metal is chosen.