Blue Tourmaline 3mm Banded Faceted Round - 15 Inch Raindrop Azurite It is not a granite

It is not a granite

is desired by some collectors as proof of a natural stone

This material dates back 29 million years and has been used in early civilizations as tools similar to obsidian

first known as saualpite

they come in a rainbow of colors besides red

Blue Tourmaline 3mm Banded Faceted Round - 15 Inch Raindrop Azurite It is not a graniteBlue 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