Mica 8mm Round Green - 15-16 inch Shape_Faceted Bicone which comes in many forms

which comes in many forms and color variations

giving some rubies a slightly brownish or purplish tint

Chrysocolla was first described by Theosphrastus

Peruvian Opal was considered by the Incas to be a gift from Pachamama

Viking and Germanic legend tell that the sword of the hero Siegfried

Mica 8mm Round Green - 15-16 inch Shape_Faceted Bicone which comes in many formsMica is a mineral name given to a group of minerals that are physically and chemically similar. They are all silicate minerals, known as sheet silicates because they form in distinct layers. Micas are fairly light and relatively soft, and the sheets and flakes of mica are flexible. Mica is heat resistant and does not conduct electricity. There are 37 different mica minerals. The most common include: purple lepidolite, black biotite, brown phlogopite