Herkimer Diamond Mineral Specimens St. Johnsville Quarry, New York For Sale

 

     

                             Calcite on Dolomite                                                  Pyrite rods in Herkimer Diamond                                 Calcite with Marcasite on Dolomite                     Herkimer Diamond

 

St. Johnsville has a quarry managed by Hanson Aggregates.  The Herks from this location are similar to others from the region.  The Herkimer diamonds are well formed and often attached to matrix.  Pyrite bars are a rare association with the Herks and scepters are also encountered here.  The location is not open for collecting.  Specimens are difficult to get.  Most of these fine pieces come from two private collections built during the late 1990s.

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OKN-565

OKN-565     Sphalerite with Dolomite    Benchmark Quarry, St. Johnsville, New York.  FIGURED SPECIMEN in Collector’s Guide to Herkimer Diamonds, p. 41, Figure 31, 2014, Schiffer Publishing Company.  2.5 x 2.3 x 1.3 cm single sphalerite crystal of a rich red color (translucent) and complex surface shape.  Small dolomite crystal in center of crystal.  One of the very finest sphalerites I have seen from the location (in top two) and finest of the 70 or so recovered from a single pocket find in the early 2000s.  I have seen no others of this form and rarely have I seen any others from any of the Herkimer diamond mines or surrounding locations.  A very rare thing indeed!!  No damage and views well from any direction.  An important competition level TN specimen.  $450

 

 

 

 

 

 

 

OKK-719

OKK-719     Calcite with Pyrites      Benchmark Quarry, St. Johnsville, New York.  Ex. Michael R. Walter Collection.   6.1 x 4.4 x 2.8 cm specimen with a good mix of pyrite draperies and translucent to transparent calcite.  Nice color and very good for these specimens.  Great condition with only minor rubs or contacts in obscure spots.... most specimens from here tend to be badly damaged... active mine blasting.   $60

 

 

 

 

 

 

 

OKK-713

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OKK-713    Calcite, Pyrite, Dolomite      Benchmark Quarry, St. Johnsville, New York.   Ex. Michael R. Walter Collection.   6 x 5 x 3.2 cm specimen with a good mix of pyrite coated dolomite and translucent to transparent calcite.  Nice color and very good for these specimens.  Great condition with only minor contacts in obscure spots.... most specimens from here tend to be badly damaged... active mine blasting.    $80

 

 

 

 

 

 

 

OKK-714

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OKK-714    Calcite with Marcasite Inclusions      Benchmark Quarry, St. Johnsville, New York.   Ex. Michael R. Walter Collection.  A fine calcite with excellent marcasite inclusions as gold colored acicular crystals.  4.5 x 4.3 x 2.5 cm.  Great condition... most specimens from here tend to be badly damaged... active mine blasting.  Bottom contact, damage free.   $95

 

 

 

 

 

 

 

OKF-585

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Marcasite inclusions close up

OKF-585    Calcite on Dolomite    Hanson Quarry, St. Johnsville, New York.  Ex. James Cranston collection.  A fine miniature which sports a large parallel growth group of translucent to transparent crystals of the typical yellow color for the locale.  They have moderate to heavy inclusions of marcasite on the backside.  All views are good so backside may be a poor way of saying this as any side displays so well.  Minor edge and base contact which is expected and all display faces are clean.  4.6 x 3 x 3 cm.  Great luster and a fine specimen.   90$

 

 

 

 

 

 

 

 

OKB-909

OKB-909    Herkimer Diamond with Pyrite Stalactite Inclusions   St. Johnsville Quarry, St. Johnsville, NY.    This 8 cm Herk. has minor crystallized dolomite matrix and impressive pyrite inclusions to 2.5 cm.  Stalactites are metallic black with gold flecks.  They are mostly internal to the crystals but do protrude to surface at their bases.  Highly unusual to find these inclusions in Herkimer diamonds.   Very minor tip rub (less than .5 millimeters.   250$

 

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