• What is the difference between precious and semi-precious gemstones?

    The precious stones are diamond, ruby, emerald and sapphire, while all other gemstones are semi-precious.
            This distinction reflects the rarity of the respective stones in ancient times, as well as their quality: all precious stones are translucent with fine colour in their purest forms, except for the colourless diamond, and are very hard (8-10 on the Mohs scale).

    Created on 15/03/2014 in Jewellery

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