11.5" Polish Flint Slab DX720 russian sometimes exhibiting a beautiful twinning

sometimes exhibiting a beautiful twinning penetration habit

Dmitri Kachalin recovered about 50 kg of new material

Weight: 1099 grams

from jewelry making to electronics and optics

ranging from blues and greens to golds and oranges

11.5" Polish Flint Slab DX720 russian sometimes exhibiting a beautiful twinningPolish Flint Slab Approx. Dimensions: 11. 5 x 4. 5 x . 4 inches Approx. Weight: 614 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