Mica 8mm Round Green - 15-16 inchMica 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

tans and golden tones that occur naturally within the stone

siderophyllite

The stone fragments remain clearly visible

initially as tools because of its hardness

Crazy Lace Agate is a banded Chalcedony that in its natural form is predominantly white with layers of brown

Von Prehn discovered the stone in South Africa in 1774

Its soft chatoyancy is reminiscent of the moon's light

” Phantom Quartz has the same chemical composition of other Quartz

Jasper has a long and illustrious history

The stone was first discovered in Sweden in the 1830s

The mines these stones are sourced from are primarily copper mines

Peter the Great set up Russia's first spa in Karelia to make use of the water purifying properties of shungite