Just a huge, fat, glowing green emerald! It is rather crude in the back due to some contact and damage on the back faces, but is fully terminated and displays impressively. It has very good, even color, quite dark actually, and is transparent or highly translucent through about 75% of the crystal. Given the thickness, this is exceptional! In sum, it LOOKS like a very expensive piece, but is not. 3.3 x 3 x 2.3 cm