Kornerupine has also been unearthed in Madagascar, Sri Lanka, Myanmar, Kenya, and Tanzania. Kornerupine catís eyes have been found in surprisingly large quantities in Sri Lanka.
Kornerupine is strongly pleochroic but most of the stones end up showing brown or brownish green. Occasional highly saturated green and blue stones from East Africa have been unearthed but very few are clean in sizes over 1/2ct. The beautiful colors of these stones has been attributed to the presence of chromium or vanadium.
With a hardness of 7 and no significant cleavage, kornerupine is hard enough to be used in most kinds of jewelry but it will never be popular due to its rarity.