31.1ct Blue-Green Tourmaline

Large piece of blue-green tourmaline from Nigeria. Somewhat included, with an open C-axis, it will cut one very large or several smaller stones in the SI clarity range.

Specifications:

Gem	Natural Tourmaline
Approx. Wt.	31.1ct
Approx. Size	15 mm X 13 mm X 11 mm
Treatments	No Treatment