Amethyst, chalcedony, and citrine are gemstone varieties of this common mineral.
A)alexandrite
B)corundum
C)quartz
D)topaz

Name: Amethyst, chalcedony, and citrine are gemstone varieties of this common mineral. A)alexandrite B)corundum C)quartz D)topaz
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Question

Quizplus · Accepted Answer

Amethyst, chalcedony, and citrine are all varieties of quartz, a common mineral. Alexandrite is a variety of chrysoberyl, corundum is a mineral that includes ruby and sapphire but not quartz, and topaz is a distinct mineral that is not related to quartz.

Amethyst, Chalcedony, and Citrine Are Gemstone Varieties of This Common