Zincite

Zincite
Poland
A rich reddish-orange color defines this beautiful stone. Zincite, as a natural mineral, occurs in only one location: Franklin, New Jersey. The present, highly collectable zincite occurred "naturally" in the vent pipes of zinc smelters in Silesia (now called Poland). Known as a secondary mineral in mineralogical terms it is a "sublimate"—referring to its process of transformation directly from the gaseous, or fire state, to the solid state without ever becoming a liquid. A by-product of the smelting process, this classic source of "man-caused yet naturally occurring" zincite is now nearly exhausted. Of particularly large size for its type, this triangular-cut stone of intense, reddish orange color possesses the highest transparency and luster and is suitable for collector of rarities. Weighing approximately 27.66 carats and measuring 16.0 x 17.0 x 11.5mm