We have 2 types of charoite slabs available. One is large slabs, polished from one side, with rough edges, size up to 50cm (20"). There are 4 different grades of this item: AA, A, B and C. Second type is small all-sides polished slabs, size up to 12cm (5"). There are 4 different grades of this item: AAA, AA, A and B. Also we have charoite flat irregular stones size 30-40mm, 5mm thick. There are 5 different grades of charoite flat irregular stones : AAA, AA, A, AB and B.