Tag: gem

The colour of alexandrite

The chemistry of colour-changing alexandrite

The colour of alexandrite
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Decades of marketing have placed diamonds on a pedestal above other gemstones. They’re an engagement ring tradition and are also found in lots of other jewellery. However, there’s another, coloured gemstone which is arguably superior. Not content with being one colour, it can display a whole range of hues, depending on the light falling on it. The gemstone in question? Alexandrite.
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