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1.95" Sparkling Demantoid Garnet Cluster in Matrix - California
This is an exceptional cluster of sparkling, green andradite var. demantoid garnets on matrix. It comes from the Green Fire Mine in San Benito County, California, a county known for its unique and interesting minerals.
Comes with an acrylic display case.
Comes with an acrylic display case.
About Demantoid Garnets
Demantoid is the vivid green, chromium-rich variety of andradite garnet, renowned for its exceptionally high dispersion (0.057), which produces spectral “fire” that exceeds that of diamond. First described from the metamorphosed serpentinite bodies of Russia’s Ural Mountains in the mid-19th century, it often contains radiating chrysotile “horsetail” inclusions that are both diagnostic of Russian material and valuable indicators of natural formation conditions. Additional occurrences in Namibia and Madagascar produce comparable specimens, though Ural deposits remain the benchmark for saturated coloration and classic inclusion patterns. Formed under narrowly defined temperature–pressure regimes in ultramafic and contact-metamorphic settings, demantoid’s chromium-induced color, distinctive internal structures, and remarkable optical properties make it one of the most scientifically important and visually extraordinary members of the garnet group.
Demantoid is the vivid green, chromium-rich variety of andradite garnet, renowned for its exceptionally high dispersion (0.057), which produces spectral “fire” that exceeds that of diamond. First described from the metamorphosed serpentinite bodies of Russia’s Ural Mountains in the mid-19th century, it often contains radiating chrysotile “horsetail” inclusions that are both diagnostic of Russian material and valuable indicators of natural formation conditions. Additional occurrences in Namibia and Madagascar produce comparable specimens, though Ural deposits remain the benchmark for saturated coloration and classic inclusion patterns. Formed under narrowly defined temperature–pressure regimes in ultramafic and contact-metamorphic settings, demantoid’s chromium-induced color, distinctive internal structures, and remarkable optical properties make it one of the most scientifically important and visually extraordinary members of the garnet group.
SPECIES
Andradite var. Demantoid
LOCATION
Green Fire Mine, Santa Rita Peak, San Benito County, California
SIZE
1.95 x 1.25"
CATEGORY
SUB CATEGORY
ITEM
#305445
