Brunei Turquoise Old Marriage Fashion Gold Jewellery Earring Necklace.
By Aamir Mannan.
Colour is as variable as the mineral's other properties, ranging from white to a powder blue to a sky blue, and from a blue-green to a yellowish green. The blue is attributed to idiochromatic copper while the green may be the result of either iron impurities (replacing aluminium) or dehydration.
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