usually red, but also yellow, green, and grayish blue
Gemstones get their colours from the way their elemental compounds react to light.
That's a great question (not really). They get color from the magic color fairies who sprinkle their magic dust all over. Isn't that great? Ask that next time, my god.
No.
June's Stone Is a pearl, So I guess white, Creamy, Well Think Of a Pearl.
Small variations in chemical makeup or possibly inclusions of other minerals. Even exposure to heat or radiation.
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