Rocks Slabs and Specimens › Extremely large Thompsonite 1 / 4 Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Extremely large Thompsonite $175.00 Unpolished, 95 gm, 2 x 1.5 x 1.25 Add To Cart Added! Unpolished, 95 gm, 2 x 1.5 x 1.25