Bible Dictionaries
Tourmaline
Webster's Dictionary
(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.
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Bibliography Information
Webster, Noah. Entry for 'Tourmaline'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/tourmaline.html. 1828.