Below you will find the solution for: Valued as a precious gem for its color this variety of quartz is predominantly silicon dioxide Jeopardy .
Since you already solved the question Valued as a precious gem for its color this variety of quartz is predominantly silicon dioxide which had the answer AMETHYST, you can simply go back at the main post to check the other answers. You can do so by clicking the link here Jeopardy April 22 2020
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