Pearl of Kuwait Pearl of Kuwait The Pearl of Kuwait is a pearl that was bought in 2004 by its current owners, Bond Street, London jewellers Symbolic & Chase, and named the "Pearl of Kuwait" in recognition of the Persian Gulf waters in which many pearls have been found. It measures 258.12 grains (64.5 carats, 69.8 carats with its diamond cap) making it the third-largest (documented) well-formed natural pearl drop. In 2004, a large pearl named the Pearl of Kuwait was consigned by an undisclosed private family for auction at Christie's in London. The Pearl of Kuwait was part of the Pearls exhibition
Gold parting in 1860's Australia. It is able to refine gold up to 99.5% purity. The process involves blowing a stream of chlorine gas over and through a crucible filled with molten impure gold. Impurities in the gold form chlorides before the gold does and these insoluble salts are removed from the melt by skimming the surface. Invented by Emil Wohlwill in 1874, this produces the highest purity gold (99.999%). It is an electrolytic process using pure gold for the cathode (or titanium as a starter cathode) and chloroauric acid (gold chloride-hydrochloric acid) as the electrolyte; this is made by dissolving gold