Opal
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Ethiopian Opal Polished Black 5mm Smooth Rondel
Bead World Gems
kn691.05Approximate beads per strand: 85 What is it: Opal is a hydrated amorphous form of silica; its water content ranges from 3-21% by weight, but is usually between 6-10%. Depending on formation conditions, opal may be transparent, translucent, or opaque...kn691.05 -
Ethiopian Opal Polished Black 3-4mm Smooth Rondel
Bead World Gems
kn468.80Approximate beads per strand: 260 What is it: Opal is a hydrated amorphous form of silica; its water content ranges from 3-21% by weight, but is usually between 6-10%. Depending on formation conditions, opal may be transparent, translucent, or opaque...kn468.80 -
Black Opal Polished 4-8mm Flat Nugget
Bead World Gems
kn732.72Approximate beads per strand: 65 What is it: Opal is a hydrated amorphous form of silica; its water content ranges from 3-21% by weight, but is usually between 6-10%. Depending on formation conditions, opal may be transparent, translucent, or opaque...kn732.72 -
Ethiopian Opal Polished 3.5-6.5mm Black Faceted Rondel - Graduated
Bead World Gems
kn1,378.62Approximate beads per strand: 150 What is it: Opal is a hydrated amorphous form of silica; its water content ranges from 3-21% by weight, but is usually between 6-10%. Depending on formation conditions, opal may be transparent, translucent, or opaque...kn1,378.62 -
Black Fire Opal 4mm Faceted Cube
Bead World Gems
kn277.46Approximate beads per strand: 95 What is it: Opal is a hydrated amorphous form of silica; its water content ranges from 3-21% by weight, but is usually between 6-10%. Depending on formation conditions, opal may be transparent, translucent, or...kn277.46