What gemstone is this?
azurite
malachite
cinnabar
turquoise
Malachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and spaces, deep underground.
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Answers by country
azurite
malachite
cinnabar
turquoise
answers

10

44

11

323

35

17

27

24

10884

15

11

370

17

69

16

16

64