Tourmaline
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Black Tourmaline A Grade Polished 8mm Round - Sold Individually
Bead World Gems
S$0.65Sold Individually 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 green...S$0.65 -
Black Tourmaline A Grade Polished 6mm Round - Sold Individually
Bead World Gems
S$0.39Sold Individually 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 green...S$0.39 -
Black Tourmaline Polished 12mm Round Bead
Bead World Gems
S$1.62Sold Individually 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 green...S$1.62 -
Dark Pink / Purple Tourmaline Polished 24-26mm Point Bead
Bead World Gems
S$2.92Sold Individually 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 green...S$2.92 -
Black Tourmaline Polished 10mm Lantern Bead
Bead World Gems
S$1.10Sold Individually 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 green...S$1.10