Pack of 3 , Each rock is approximately 1-2 inches on the longest side., Thickness ranges from around 1/2 cm to 1 cm., A fine-grained, layered
Raw Red Slate, Metamorphic Rock Specimen - Hand Sample - Approx. 3 — Eisco Labs
Writing Stone Slab
Geode Rocks Slate
Grey Rock Slab
Shale Quartz
Historic Piece Only One Slate Stone With Drill Bit Impressions
Black Shale Mineral
Slate Stone Slabs
Slate Rocks
Grey Shale Rock