Slabbing Rough A new rough material from Mexico, Sonora Dendritic, can have scenic pictures with maroon dendrites on a blue and tan landscape, maroon plumes, orange or yellow background, softer than Jasper, polishes to a satin finish, sizes range from 1 to 10 pound chunks. Attention : Final billing weight may vary more or less. Dependent on material and current selection. The amount entered in the "Qty" field is just an estimate. **Slabbing rough may be cut to the closest weight.