Multi Tourmaline 6x10mm Rondelle - 15-16 Inch Blue Porcelain Agate The cleaner facet from this

The cleaner facet from this cutting process results in significantly more sparkle than seen in stone cut by other methods

or merlinite

Tourmaline is unusual in that it is both pyroelectric and piezoelectric

mata ratón

It is a variety of the mineral corundum

Multi Tourmaline 6x10mm Rondelle - 15-16 Inch Blue Porcelain Agate The cleaner facet from thisTourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to dark. It can even exhibit various colors within the same specimen. Its name derives from the Sinhalese word turamali, which translates to stone of many colors. Due to this variety of colors, Tourmaline has often been confused with other stones. Many stones in the Russian crown jewels from the 17th century