Alexandrite crystals
A cluster of the gemstone alexandrite trillings, or twinned crystals. This gemstone was named after the Russian Tsar Alexander II. It can appear in both red or green
Picture No
10703764
Media ID
47586831
Size
2911px x 3440px
(6.4MB)
Credit
Mary Evans / Natural History Museum
Source
Photograph from the Natural History Museum Collection
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