Rocks Slabs and Specimens › Tiffany Stone (Bertrandite) Image 1 of 3 Image 2 of 3 Image 3 of 3 Tiffany Stone (Bertrandite) $400.00 Polished both sides, exceptional color specimen, 14.2 oz, 6.25 x 5 x .4 inches. Thick slab Add To Cart Added! Polished both sides, exceptional color specimen, 14.2 oz, 6.25 x 5 x .4 inches. Thick slab Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More