Quartz (“Herkimer Diamond”) - image 1
Photo by Laszlo Kupi Fine Mineral Photography

Quartz (“Herkimer Diamond”)

Quartz (“Herkimer diamond”) crystal cluster, 12.6 cm, from the Ace of Diamonds mine, Middleville, Herkimer County, New York. Ex collections of Bill Metropolis, Stuart Strife, and Bruce Oreck; László Kupi photo.

Product details

SpeciesQuartz, Diamond
SizeCabinet
Dimensions12.6 cm
Added on03/26/2026
LocalityUSA, New York, Ace of Diamonds Mine
Publications
  • Mineralogical Record The Kevin Brown Collection page 70
Current owner
Kevin Brown
Kevin Brown
Parker, TX
Member since 2026
Previous owners
DateCollectorAcquisition price
—Bruce OreckNot disclosed
—Stuart StrifeNot disclosed
—Bill MetropolisNot disclosed

Learn more

Quartz
Mineral guide
Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.
Quartz
Regional guide
Quartz from Ace of Diamonds Mine
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Locality guide
Ace of Diamonds Mine
Ace of Diamonds Mine, New York - classic Herkimer district locality known for water-clear quartz crystals; accessible pockets and gem-quality specimens.