Herkimer Diamond Mineral Specimens
St. Johnsville Quarry, New York
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. These fine pieces come from two private collections built during the late 1990s.
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OKB-908 Herkimer Diamond on Dolomite and Pyrite St. Johnsville Quarry, St. Johnsville, NY. 7.5 cm matrix Herk. Internal skeletal growths Everything is regrown on surface of matrix. Nice balance and form. 125$
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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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OKB-904 Herkimer Diamond on Dolomite and Pyrite St. Johnsville Quarry, St. Johnsville, NY. Great looking matrix specimen composed 4 nice Herks to 2.5 cm each. Matrix is massive dolomite with small dolomite crystals and a coating of micro pyrite. An aesthetically formed specimen. 120$
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