Gold Crystals on Iron Oxide Matrix
Placer County, California
This exceptionally rare gold specimen from California boasts a singular mineral composition, unparalleled in the region. Its matrix comprises limonite (an iron oxide), native arsenic, and native lead—a trio of minerals coexisting with gold that is unprecedented in other Californian localities. The native gold crystals, with an impressive purity of approximately 95% gold and 5% silver, exhibit a warm, saturated yellow hue due to the high gold concentration, complemented by outstanding luster. The crystal morphology is distinctive, featuring modified, flattened octahedral crystals alongside dense clusters of lustrous, leafy gold crystals. Visible on all sides, the gold’s intricate formations make this specimen a superb representation of its unique locality.
14 x 6 x 4 mm
0.65 gram