Mica was probably used in a mineralogical sense in 1706. Originally "smicka", from the Latin micare - to flash or sparkle - in an allusion to the appearance of the material.

Islassine dates from before the use of mica as a mineral term and is known from at least 1535. Isinglass also referred to the issue of sturgeon fish that also has pearly white scales.

A group of sheet silicates that can be separated into flexible or brittle plates. Contains the True Micas and the Brittle Micas. Also known as the 'mica family'.


Formula: Fuchsite: K(Al,Cr)3Si3O10(OH)2
Muscovite: KAl2(AlSi3O10)(OH)2
Lepidolite: K (Li, Al) 2-3 (AlSi 3) O 10 (OH) 2
Color: Violet, pink, green
Coloring Factor: Acorn: mother-of-pearl acorn, silk acorn
Hardness:  2-3
Specific weight: 2.8-2.9
Crystal System: Monoclinic
Transparency: Translucent to Opaque
Location: USA. Switzerland

The Mica Group consists of, among others: Fuchsite, LepidoliteMuscovite

Are you looking for cut Gemstones from the Mica Group, then look at MICA GROUP