Mica
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Black Tourmaline in Mica Polished 4mm Round
Bead World Gems
kn193.61Approximate 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...kn193.61 -
Black Tourmaline in Mica Grade A Polished 8mm Round
Bead World Gems
kn292.18Approximate 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...kn292.18 -
Black Tourmaline in Mica Grade A Polished 6mm Round
Bead World Gems
kn242.89Approximate 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...kn242.89 -
Black Mica Polished 12mm Round
Bead World Gems
kn186.57Approximate 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...kn186.57 -
Black Mica Polished 10mm Round
Bead World Gems
kn172.49Approximate beads per strand: 38 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...kn172.49 -
Black Mica Polished 8mm Round
Bead World Gems
kn130.25Approximate beads per strand: 45 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...kn130.25 -
Black Mica Polished 6mm Round
Bead World Gems
kn103.85Approximate 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...kn103.85 -
Black Mica Polished 4mm Round
Bead World Gems
kn88.01Approximate 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...kn88.01