Scheelite: Calcium tungstate. It is an important ore of tungsten. Well-formed crystals are sought by collectors and are occasionally fashioned into gemstones when suitably free of flaws.
Fluorite: Believed to improve concentration, learning, critical thinking, and intuition.
Muscovite: Known as common mica, isinglass, or potash mica is a hydrated phyllosilicate mineral of aluminium and potassium with formula. It has a highly perfect basal cleavage yielding remarkably thin laminae sheets which are often highly elastic.

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