Black Mica 6mm Round A Grade - 15-16 Inch 12x20-15x30mm As the name suggests

As the name suggests

it has often been used as a substitute

Blood Quartz is a clear to milky to white silicon dioxide mineral

The special stainless steel head of MultiPliers feature double leaf-spring loaded handles and combines a set of Round Nose and Chain Nose Pliers that move simultaneously

Hole Diameter: 0

Black Mica 6mm Round A Grade - 15-16 Inch 12x20-15x30mm As the name suggestsMica 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