Montana agate slab samples will contain five square inches per one order. (Stock 536s) Manganese dendrites, moss, bands, or other inclusions of black, green, etc. are in clear to blue gray excellent chalcedony agate. Some of the larger slabs of Montana agate may have a few fractures due to freezing and thawing, but nice large cabochons may still be made from the slabs. The slab of Montana agate pictured to the left contains about 6 square inches or one sample order. One slab order is $5.60 for a minumum of 5 square inches. To slab your own rough Montana agate see the category Rough for Cabbing.