A real rarity and the only such association I am aware of, a gem quality Tanzanite crystal with an attached 5mm Allanite-(Ce) (analyzed) near the termination. Aside from the unusual association, the Tanzanite itself is spectacular, being 100% gem quality, like purple glass, with good luster and though not large, is a thick crystal. A truely unique Tanzanite thumbnail. 19 carats of gem Tanzanite.