5" Polish Flint Slab DX771 welo opal and is distinguished by its

and is distinguished by its rich mixture of colors and unique fibrous structure

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We sent a sample of these crystals to a lab for testing

5" Polish Flint Slab DX771 welo opal and is distinguished by itsPolish Flint Slab Approx. Dimensions: 5 x 4 x 0. 5 inches Approx. Weight: 179 grams Locality: Sandomierz, Poland Includes acrylic slab stand! This beautiful slab display has been cut from a Polish flint nodule. It has a full polish on the front and has natural edges from the nodule on top and bottom. Polish Flint is known for its incredibly beautiful banding. It forms in concretions, or large nodules, in Jurassic limestone from about 160 million years