Emma Wright
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SAPPHIRE/RUBY. This specimen is almost entirely a single large, lustrous and translucent, bicolored sapphire/ruby crystal, measuring 3.1 cm across and 2.4 cm in length.

A corundum crystal showing both SAPPHIRE and RUBY. This specimen is almost entirely a single large, lustrous and translucent, bicolored sapphire/ruby crystal, measuring cm across and cm in length.