SHARP, EXCEPTIONALLY lustrous crystals to 1.5 cm, perched on actual crystallized calcite matrix! I cannot tell you how rare this is! Mostly, the wulfies are jumbled together and not isolated....but beyond that they tend to be on flat, uncrystallized matrix whereas this one is on calcite crystals (however minute they may be) ! It is a stunning specimen, because of the stark color contrast. 7.6 x 6 x 2.7 cm