Gem Diopside crystals from the Tanzanite mines in Tanzania are a relatively new item on the market. They tend to be small, with the best quality ones being bright green and glassy. This gemmy diopside has an electric "glowing" green that is so striking. It has a wonderful multi-face termination, brilliant color and internal clarity as well. This piece will add great color to your display. It weighs 1.35 grams (over 6.5 carats). An impressive article about this deposit was printed in the Mineralogical Record in September-October 2009 (the "Tanzanite Issue").