CABOCHONS Cabochons are available in calibrated and Free Sizes. All stones are fine cutting and Nice color. Stones are from Nepal and Brazil origin. Hardness 5.0 – 7.0. Occurrence Myanmar (Burma), Brazil, Kenya, Europe, India, Nepal,Australia, Kenya, United States Appearance Deep blue, white, gray or green. Generally very included. Kyanite has the interesting property that it’s hardness varies according to the direction of the crystal. Enhancements Kyanite is not known to be enhanced.