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Chalcedony (classic material) (ex Brian Kosnar Collection)
- Slanec Quarry, Slanske Mts, Kosice Region, Slovakia
- Small Cabinet, 5.3 x 4.2 x 0.8 cm
- Start Time: 09/22/2011 6:45:00 pm (CDT)
- End Time: 09/29/2011 6:45:00 pm (CDT)
- Auction Closed
Item Description
This piece is a good quality Chalcedony specimen from the Slanec Quarry in Slovakia. The individual "spheres", which measure up to 12 mm across, are actually somewhat lustrous, and have a light silvery-lavender color. This is more than a reference piece, and would make a good addition to a Quartz collection, or a collection of European minerals. According to mindat.org, Chalcedony is "traditionally defined as a fibrous cryptocrystalline variety of Quartz, more recently, it has been shown that much Chalcedony is a mixture of Quartz and Moganite, another silica mineral"