Sharp crystals to 2 cm make this the most dramatic example for the find, because this is the largest crystal I know of to date! The twinning is SHARP and well-developed, much more easily visible because of the size of the crystal. Three other large crystals, to over 1 cm, flank the big one's rear. I like the look of it as a castle or mountain with smaller peaks winding elegantly down the center-right of the piece. The effect is gorgeous in person! I think, given how unique the piece is amongst 200 or so specimens from this pocket, that its quality should stand the test of time and set it above others of the find (from late 2005). Most importantly from the collectors point of view, they are unusually pretty as previous colemanites have generally been white to chalky in color, with few exceptions as a rule. Moreover, and even more interesting, these specimens are composed of twinned crystals which have really sharp and interesting intersections resulting in complex crystallography. Lastly, they fluoresce in an interesting pattern with yellow or white zones at those intersections.