Idocrase is also known as Vesuvianite, since it was originally found on the Mt. Vesuvias volcano. The name idocrase comes from the Greek for “mixed form”, since its crystals often show a mixture of other mineral forms. Idocrase has a hardness of 6.5 on the Mohs scale. The color is normally green, but also can be brown, yellow, blue or purple.
Actinolite Cat’s Eye
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