Mica
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Black Tourmaline in Mica Polished 4mm Round
Bead World Gems
€26.88Approximate 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...€26.88 -
Black Tourmaline in Mica Grade A Polished 8mm Round
Bead World Gems
€40.56Approximate 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...€40.56 -
Black Tourmaline in Mica Grade A Polished 6mm Round
Bead World Gems
€33.72Approximate 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...€33.72 -
Black Mica Polished 12mm Round
Bead World Gems
€25.90Approximate 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...€25.90 -
Black Mica Polished 6mm Round
Bead World Gems
€14.42Approximate 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...€14.42 -
Black Mica Polished 4mm Round
Bead World Gems
€12.22Approximate 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...€12.22