Description
A highly lustrous Sphalerite specimen from the legendary Cave-in-Rock mining district of Hardin County, Illinois. This piece features sharp, reflective crystal faces with rich metallic luster and deep red internal tones that become visible under strong lighting. The surface is covered with tightly intergrown crystals that create dramatic sparkle and mirror-like reflections across the specimen.
This piece has excellent visual impact. The sharp crystallization and strong contrast between metallic highlights and warm amber undertones give it the bold, classic appearance collectors seek from high-quality Illinois Sphalerite.
Specimens from Cave-in-Rock are especially desirable because the locality is considered one of the most famous fluorite and associated mineral districts in the United States. Material from this region has been highly sought after by collectors for generations due to its combination of strong crystal development, rich mineral diversity, and historic significance within American mineral collecting.
Dimensions & Weight
3.75” x 1.5” x 0.75”
200g
Metaphysical Properties
Sphalerite is often associated with grounding, focus, and energetic balance. Many believe it helps connect physical energy with mental clarity while encouraging confidence and motivation. Its strong reflective luster and dark metallic appearance have also made it symbolically associated with protection and transformation.
Collector’s Notes
The Cave-in-Rock district in Hardin County, Illinois is internationally famous among mineral collectors and is regarded as one of the classic American mineral localities. While the area is best known for its world-famous fluorite, it also produced exceptional associated minerals including Sphalerite, Galena, Calcite, and Barite.
Illinois Sphalerite is especially admired for its intense resinous color and metallic luster. Collectors especially seek specimens like this, where the light penetrates thinner crystal edges, revealing deep red, amber, or honey-colored internal flashes beneath the dark surface. This specimen displays many of the qualities collectors look for from the locality, including sharp crystal faces, strong reflectivity, and dense crystallization.
Historic specimens from Cave-in-Rock continue to hold strong collector interest due to the locality’s importance in American mining and mineral collecting history.
Highlights
Excellent color
Historic Illinois fluorite district association
Sharp reflective crystal faces
Strong metallic luster
Excellent collector display specimen
Highly collectible
Sharp, defined terminations.
Mineralogy
Primary Mineral: Sphalerite
Chemical Formula: ZnS
Crystal System: Isometric
Luster: Resinous to metallic
Transparency: Opaque to translucent on thin crystal edges
Locality: Cave-in-Rock District, Hardin County, Illinois, USA
Description
A highly lustrous Sphalerite specimen from the legendary Cave-in-Rock mining district of Hardin County, Illinois. This piece features sharp, reflective crystal faces with rich metallic luster and deep red internal tones that become visible under strong lighting. The surface is covered with tightly intergrown crystals that create dramatic sparkle and mirror-like reflections across the specimen.
This piece has excellent visual impact. The sharp crystallization and strong contrast between metallic highlights and warm amber undertones give it the bold, classic appearance collectors seek from high-quality Illinois Sphalerite.
Specimens from Cave-in-Rock are especially desirable because the locality is considered one of the most famous fluorite and associated mineral districts in the United States. Material from this region has been highly sought after by collectors for generations due to its combination of strong crystal development, rich mineral diversity, and historic significance within American mineral collecting.
Dimensions & Weight
3.75” x 1.5” x 0.75”
200g
Metaphysical Properties
Sphalerite is often associated with grounding, focus, and energetic balance. Many believe it helps connect physical energy with mental clarity while encouraging confidence and motivation. Its strong reflective luster and dark metallic appearance have also made it symbolically associated with protection and transformation.
Collector’s Notes
The Cave-in-Rock district in Hardin County, Illinois is internationally famous among mineral collectors and is regarded as one of the classic American mineral localities. While the area is best known for its world-famous fluorite, it also produced exceptional associated minerals including Sphalerite, Galena, Calcite, and Barite.
Illinois Sphalerite is especially admired for its intense resinous color and metallic luster. Collectors especially seek specimens like this, where the light penetrates thinner crystal edges, revealing deep red, amber, or honey-colored internal flashes beneath the dark surface. This specimen displays many of the qualities collectors look for from the locality, including sharp crystal faces, strong reflectivity, and dense crystallization.
Historic specimens from Cave-in-Rock continue to hold strong collector interest due to the locality’s importance in American mining and mineral collecting history.
Highlights
Excellent color
Historic Illinois fluorite district association
Sharp reflective crystal faces
Strong metallic luster
Excellent collector display specimen
Highly collectible
Sharp, defined terminations.
Mineralogy
Primary Mineral: Sphalerite
Chemical Formula: ZnS
Crystal System: Isometric
Luster: Resinous to metallic
Transparency: Opaque to translucent on thin crystal edges
Locality: Cave-in-Rock District, Hardin County, Illinois, USA
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