Siderite and Quartz on Pyrite (replacing Siderite) with Stannite inclusions Kosnar collection

Kosnar collection

the Italian specimens are among the best in the world

This one is in very good shape for this material despite a little bit of roughness here and there but just look at how sharp and lustrous the crystals are

ridiculously rare

or those who admire Bolivian minerals

Siderite and Quartz on Pyrite (replacing Siderite) with Stannite inclusions Kosnar collectionThe Siete Suyos mine (Seven Servants mine) is sometimes considered to be part of the Animas mine, and it is often difficult to know where specimens are from because several mines in the area share the same vein system. The good news is that I directly obtained this specimen from the miner who collected it, so I know for certain where it came from. I honestly have never seen any specimens from this locality before, but I was happy to purchase the