Adularia, variety of K Feldspar Maderanatal, Kantan Uri, Switzerland 4.0 cm x 3.7 cm x 4.3 cm   Here is a unique specimen of this Orthoclase variety. This specimen has some great provenance, with it's earliest label being a fragile Columbia University label from turn of the century. These are usually found in Alpine pegmatites.  The specimen is light… More info

Historic Microline var. Amazonstone / Amazonite Florissant, Teller County, Colorado 7.55 cm x 7.77 cm x 4.40 cm ex. L.W. Stilwell specimen, ex. Ward's specimen, ex. Hauck Coll. ex. Breck Kent Coll., ex Natural Selection Crystals specimen Here is an great, very old specimen of Amazonite with some pretty amazing provenance. When first found, it was known as Amazonstone as… More info

Here is an amazing Historic Specimen of Sulfur, from of all places California, Calusa County to be exact. Although California is not known for it's sulfur deposits, there was a time during the 1800's that is was mined in this state. This specimen was acquired in 1843 by one of the most well known collectors of the time, W.W. Jefferis. His own collection label (which comes with t… More info

Pyromorphite Usingen, Nassau, Germany, Europe 5.4 cm x 4.7 cm x 4.5 cm   Where do I begin to tell the story of such an exceptional specimen with quite the history to it!   This amazing specimen of Pyromorphite comes with a "Krantz & Comp. in Berlin" label, which date this specimen sometime between 1837 - 1850. That is when he sold his specimen… More info