A very short beginner problem or something to warm up on. Sit start the short ass end of the boulder before the "cave" feature, left of Lactose with good slopey holds. Pull off the ground and reach up for the top of the boulder before topping out. Named after a crystal on the rock that sliced open a finger or two before breaking.
On the Welcome Boulders, this climb is the first you see as you approach from the Welcome Crack & North Face. Downclimb the short slab on the left.