Fossil Shack offers the highest quality fossils for sale anywhere and sells them at the lowest prices possible. All of our fossils are 100% authentic and each has been scientifically identified by our team and comes with its own certificate of authenticity. We prepare most of our own fossil specimens and work only with other reputable ... Nov 19, 2021 We placed Rare Russian Minerals for sale on Dakota Matrix. Gallery - Rare Minerals for Sale. Released - 10/21/2019 60034 PM. Quantity - 5. 44168 - Umbozerite. 46478 - Potassicpargasite. 50450 - Alumoklyuchevskite. 50488 - Nabokoite. 50501 - Vladimirivanovite.