Tourmaline. A mineral occurring in three-sided prisms. Black tourmaline 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. The finest ones come from Maine, and are worth four or five times as much as garnets.

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“A saint cannot do evil before men but he gives opportunity for sinners to speak evil of God. If there be any spots on a Christian's coat, the world will soon spy them.”
–George Swinnock in Works