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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“God hath caused many wants and weaknesses in us that we may be useful to one another; and has purposely given a diversity of gifts and graces, that we may be helpful to each other.”
–The Works of George Swinnock