World record price for a natural pearl jewel at auction The Baroda Pearls A two-strand natural pearl necklace with ear pendants, brooch & ring en suite
This information should always be disclosed for major stones. Sometimes colourless glass-like substances are used to fill surface reaching cracks. Rubies are often heated to improve their colour and clarity. Vietnam and East Africa also produce fine stones. The Mogok mining region of Upper Burma is synonymous with the very finest gems. The traditional sources for rubies are Burma (now Myanmar), Ceylon (Sri Lanka) and Siam (Thailand). Clarity is also an essential ingredient of beauty and sometimes there are fine needles within the stone that reflect the light and give it a hazy shimmer at the surface. The ruby's rich colour, often described as 'pigeon's blood' red, is so coveted. Corundum is the name given to ruby and sapphire, although ruby is coloured by chromium and blue sapphire by a combination of iron and titanium. Rubies are amongst the most coveted of coloured gemstones and are often associated with passion, warmth and devotion.
November 2010, Christie’s Hong Kong Rubies An oval-cut Burmese ruby ring of 7.04 carats
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