Smithsonite pseudomorph after Calcite (ex Kay Robertson Collection)

Item Description

Tsumeb is beloved by collectors due to the wide variety of species found, and even the common species like Smithsonite occurred in a myriad of habits and color. Lovely soft blue-green colored vitreous aggregates of gemmy Smithsonite have formed pseudomorphs after preexisting Calcite to create an eye-catching display specimen. Very attractive on both the front and back, and the piece almost has an other-worldly quality as it looks like it could almost be organic in origin. Great quality, showy and classic! Tsumeb has produced many colors of Smithsonite, and when you combine a beautiful hue like this with the fact that it's a pseudomorph, you get a great overall specimen from this world-famous locality. Ex Kay Robertson Collection (#2320). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017). Valued at $1750.