Kornerupine

Green and red-brown can be seen by looking through Kornerupine's magnesium iron aluminum borosilicate crystals, but the main color can vary through a range of green or brown. Bringing out the best color is tricky, but the right cut can really make a difference.

See also Matter, Gems, Ar and Garnets Feldspars.

— Scotus - 20 Jan 2002