Diopside

specimen number:
2063824

location:
Dekalb, St. Lawrence Co., New York, USA

description:
A choice loose green mostly gem terminated crystal of lustrous diopside. In very good condition. Nice for this classic material. The specimen comes with a previous label from the collection of Ray DeMark.

DeKalb, located in Saint Lawrence County, New York, sits within the geologically famous Grenville Province, a region renowned for its high-grade metamorphic skarn deposits and marble formations. During the Precambrian era, intense heat and pressure recrystallized ancient limestones, driving reactions between silicate fluids and carbonate rocks to produce exceptional mineral deposits. Mining and mineral collecting in the town of DeKalb surged during the nineteenth and twentieth centuries, gaining widespread fame among collectors for producing some of the world finest diopside specimens. Known locally and historically from classic sites like the Calvin Mitchell Farm, DeKalb yields sharp, highly lustrous, transparent to translucent green diopside crystals, often occurring as well-formed prismatic prisms embedded in or freed from crystalline marble and calcite matrices. Today, historic DeKalb specimens remain highly prized classics in American mineralogy for their superb crystal morphology and rich color.

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