Rio Tinto is the owner of argyle diamonds mine of west Australia which is the world's largest producer of natural colored diamonds. The argyle diamond mine produces a significant quantity of brown diamonds and have successfully marketed them using their descriptive names "Cognac & Champagne" and grading them on color chart C1-C8.
Ask your Jeweller?
The darker cognac & champagne colors are the most desirable colors because of their unique appearance and red flashes that they may exihibit. Large clean VS or better champagne colored diamonds are very rare. It is amazing but true, ask your jeweller to find you a 3 carat VVS white diamond and champagne color diamond, find out for yourself how many options you will be offered?
Chocolate and Brown diamonds has found its way to the necks, arms, hands and bodies of fashion runaway models. According to experts at GIA, gemstones with warm, brown tones are heating up. The worlds most influential designers in couture apparel & jewellery have built their fall fashion menus around shades of brown-from delicate caramel & mochas to the darkest cognacs and champagnes.
Hot Browns v/s Ice Whites:
The key to wearing the new browns in jewellery is to go for the contrast: cognac diamonds with colorless diamonds. No wonder white diamonds are called as ice but brown diamonds are very hot and getting hotter. Brown being the most common natural colored diamond, production in the world's largest diamond producing mine, the Argyle mine in Australia has been down in recent years, and geologist & miners there have not discovered any new deposits. If the argyle mine doesn't start producing more of these scintillating golden beauties, the "Champagne Diamonds" might become just as priced as "ice".