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Gemstones are rare
and consist of minerals that are formed spontaneously in nature
without human intervention. Some precious gems are of organic
origin such as pearl and amber.
When considering to
purchase a gemstone piece, the colour of the gemstone is often
the most important criteria. The factors determining colour are
as follows:
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Hue - Whether the
gemstone is of a precise spectral colour.
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Tone – The lightness
and darkness of the colour.
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Intensity –
Brightness and vividness of the colour.
Learn more about:
Jade
Sapphire
Emerald
Ruby
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