Gubelin Gemmology - The most prised aquamarines are said to be of a mesmerising saturated pure blue colour. However, this pure blue is often obtained through heat treatment. In its natural state,
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AZOOB 1 Pack Natural Blue Rough Aquamarine Rough GravelSpecimen Home DecorStones (Color : 40-60g) JIYUEYIN (Color : 20-30g) : Amazon.co.uk: Home & Kitchen
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