Santa Rosa, for consistency of color in the blue-green hues, was always known as one of the best gem-rough producers. This crystal shows why. The intensity of color, the transparency and internal brightness, and the luster, all prove the reason for the high value put on cut tourmaline gems from this mine. This is a totally pristine, elongated crystal with a sharp termination, 100% gemmy throughout its entire length. It is much better in luster and color saturation in person than the photo shows, and requires almost no backlighting, to show off its gemminess. Ex. Dr. Stephen Smale Collection.