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Chalcedony (good quality) (ex Brian Kosnar Collection) 
Back to CONSIGNMENT and COLLECTION AUCTIONS - Ends November 25th
Slanec Quarry, Slanské Mts, Koice Region, Slovakia
- Starting Time:11/17/2011 06:45:00 PM(CST)
- Ending Time:11/25/2011 06:45:00 PM(CST)
Time Left:Auction Is Closed
- Size:Small Cabinet
- Size Description:6.7 x 3.7 x 1.1 cm
Description: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 Mogánite, another silica mineral". This piece is one of the better quality Chalcedony specimens I have seen from the Slanec Quarry in Slovakia. The individual "spheres", which measure up to 9 mm across, are actually somewhat lustrous, and GEMMY compared to many other Chalceondy specimens that I have seen from this locality. This is more than a reference piece, and would make a great addition to a Quartz collection, or a collection of European minerals.
