Ruby deposits also exist in Vietnam, near the Chinese border. Rubies of Vietnamese origin generally display a slightly purplish hue. Rubies from Thailand, another classical supplier, however, often have a darker red which tends towards brown. This ‘Siamese color’ - an elegantly muted deep red - is considered second in beauty only to the Burmese color, and is especially popular in the USA. Ceylon rubies, which have now become very rare, are mainly light red, like ripe raspberries. Straight after their discovery in the 1960s, rubies from Kenya and Tanzania surprised the experts by their beautiful, strong color, which may vary from light to dark red.
But in the African mines too, fine and clear rubies of good color, purity and size are very rare. Usually the qualities mined are of a merely average quality. Where color is a ruby’s most important feature, its transparency is secondary. Inclusions do not impair the quality of a ruby unless they decrease the transparency of the stone or are located right in the centre of its table. On the contrary: inclusions within a ruby could be said to be its ‘fingerprint’, a statement of its individuality and, at the same time, proof of its genuineness and natural origin. The cut is essential: only a perfect cut will underline the beauty of this valuable and precious stone in a way befitting the ‘king of the gemstones’.