11.5" Polish Flint Slab DX722 obelisk The lake’s wave activity eroded

The lake’s wave activity eroded the geode-bearing rhyolite and redeposited the geodes several miles away in the Dugway geode bed area as lake sediments

It forms in globular clusters that resembles a bunch of grapes

Weight: 398 grams

It is thought to have been discovered in the 1940's

Weight: 640 grams

11.5" Polish Flint Slab DX722 obelisk The lake’s wave activity erodedPolish Flint Slab Approx. Dimensions: 11. 5 x 5 x . 4 inches Approx. Weight: 570 grams Locality: Sandomierz, Poland Includes acrylic slab stand This slab has a full polish on one side but has been left unpolished on the back. Polish Flint is known for its incredibly beautiful banding. It forms in concretions, or large nodules, in Jurassic limestone from about 160 million years ago. During the Neolithic Period, about 5000 3500 years ago, flint was used