Mica
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Black Tourmaline in Mica Polished 4mm Round
Bead World Gems
SR383.49Approximate beads per strand: 95 What is it: Tourmaline is part of a large group of boron silicate minerals with a wide range of colors. It has a Mohs hardness of 7 to 7.5. History: In the 1500s, a Spanish conquistador of Brazil, washed the dirt from a...SR383.49 -
Black Tourmaline in Mica Grade A Polished 8mm Round
Bead World Gems
SR578.72Approximate beads per strand: 45 What is it: Tourmaline is part of a large group of boron silicate minerals with a wide range of colors. It has a Mohs hardness of 7 to 7.5. History: In the 1500s, a Spanish conquistador of Brazil, washed the dirt from a...SR578.72 -
Black Tourmaline in Mica Grade A Polished 6mm Round
Bead World Gems
SR481.10Approximate beads per strand: 65 What is it: Tourmaline is part of a large group of boron silicate minerals with a wide range of colors. It has a Mohs hardness of 7 to 7.5. History: In the 1500s, a Spanish conquistador of Brazil, washed the dirt from a...SR481.10 -
Black Mica Polished 12mm Round
Bead World Gems
SR369.54Approximate beads per strand: 35 What is it: Mica is a silicate mineral that form in distinct layers. Mica is fairly light and soft, and sheets and flakes of mica are flexible. History: Mica was first mined in India about 4,000 years ago, where it...SR369.54 -
Black Mica Polished 6mm Round
Bead World Gems
SR205.69Approximate beads per strand: 65 What is it: Mica is a silicate mineral that form in distinct layers. Mica is fairly light and soft, and sheets and flakes of mica are flexible. History: Mica was first mined in India about 4,000 years ago, where it...SR205.69 -
Black Mica Polished 4mm Round
Bead World Gems
SR174.31Approximate beads per strand: 95 What is it: Mica is a silicate mineral that form in distinct layers. Mica is fairly light and soft, and sheets and flakes of mica are flexible. History: Mica was first mined in India about 4,000 years ago, where it...SR174.31