The Emerald crystal is 9mm wide by 7mm tall by approx. 9mm deep. It's very bright green, and the crystal is deep into the matrix, so the color is rich and it pulls you into it. There must be a carat+ stone easy if you faceted it. It's well terminated and really pops from across the room. A classic columbian emerald. It comes mounted on an 1` 1/2" acrylic base.