Blue Tourmaline 4mm Microfaceted Round A Grade - 15-16 Inch September Sardonyx is sometimes treated to

Sardonyx is sometimes treated to bring out its reddish tones

People have treated turquoise for centuries using various treatment methods

as well as its iridescent sparkle

[Use Fire Opal description

Approximately 11 beads per strand

Blue Tourmaline 4mm Microfaceted Round A Grade - 15-16 Inch September Sardonyx is sometimes treated toBlue Tourmaline ranges in color from green to blue to yellow to green with black, milky white and clear, colorless inclusions. It is an aluminum borosilicate mixed with iron, magnesium and other metals that give it its color. Tourmaline occurs in nearly every color in the rainbow and its name derives from turmali, the Sinhalese word for mixed color precious stone. Tourmaline is unusual in that it is both pyroelectric and piezoelectric, meaning it