Sapphires are really interesting, because they have a very strong association with the colour blue, despite coming in all possible colours. There’s even a shade of blue literally called “sapphire”. Another interesting fact: ruby is literally just red sapphire. Every other shade of sapphire is called green sapphire, yellow sapphire, pink sapphire, but red sapphire gets its own name. This is because ancient gem traders classified stones by colour, not composition. Red transparent gems were all cal
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