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- Some of the the most famous rubies in crown jewels around the world, including the Black Princes Ruby and the Timur Ruby in the British Crown Jewels, are actually what kind of mineral?
Question 1:
Some of the the most famous rubies in crown jewels around the world, including the Black Princes Ruby and the Timur Ruby in the British Crown Jewels, are actually what kind of mineral?
A. spinel
B. mica
C. quartz
D. silicate
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