Clues for the word "TOURMALINE"

We've had 6 crossword clues used for this word, and seen it 7 times in crosswords. It was last seen in Guardian Cryptic crossword on March 21, 2014.

Definition of tourmaline

n. - A mineral occurring usually in three-sided or six-sided prisms terminated by rhombohedral or scalenohedral planes. Black tourmaline (schorl) is the most common variety, but there are also other varieties, as the blue (indicolite), red (rubellite), also green, brown, and white. The red and green varieties when transparent are valued as jewels.