Tourmaline

Tourmaline occurs in the widest array of colors of any gemstone species. Sometimes as many as two or three colors exist in the same cut stone. Tourmaline is also known under different names: The “rubelite” is red, sometimes with a violet tint. Fine “chrome” tourmaline has a beautiful rich green color. “Indicolite” ranges from very light to dark shades of blue, violet blue, and greenish blue.
The name “tourmaline” has its origins in the Sinhalese word “Turmali”, which means mixture. Originally, native miners applied this term to mixed parcels of gems when they didn’t really know what the stones were.
Tourmaline is sometimes known as an alternative birthstone for October, and the accepted anniversary gemstone for eight year of marriage.