Raw Gold in Quartz Host Rock (Specimen)
Raw Gold (Lode/Ore Specimen) · Yellow Gold (Natural Native Gold)
Purity: Estimated 20K to 23K (83% - 96% purity). Natural gold usually contains silver and copper as minor impurities.
Type
Raw Gold (Lode/Ore Specimen)
Purity
Estimated 20K to 23K (83% - 96% purity). Natural gold usually contains silver and copper as minor impurities.
Gold Type
Yellow Gold (Natural Native Gold)
Weight
15 to 25 grams for the total specimen; gold content likely less than 1 gram.
Description
A raw, unrefined gold-bearing quartz specimen. The piece features visible flecks and thin veins of native gold embedded within a weathered quartz matrix. The surface shows some river-wear or alluvial smoothing, though the gold remains largely protected within the host material. This is a classic 'hard rock' specimen prized by prospectors and mineral collectors.
Key Features
Visible 'free-milling' gold, quartz host matrix, and iron-oxidized staining which is a common indicator of gold-bearing veins.
Color & Finish
The gold displays a classic rich buttery yellow with a high natural luster. The host rock is translucent to opaque white-tan quartz with iron staining (limonite).
Hallmarks & Stamps
None. As a natural geological specimen, there are no stamps or manufacturer hallmarks.
Dimensions Estimate
Approximately 25mm x 20mm x 15mm (about the size of a small walnut).
Gemstones & Inlays
Crystalline and milky quartz matrix with possible traces of pyrite or arsenopyrite.
Clasp & Closure
Not applicable (Natural rock specimen).
Chain & Links
Not applicable. Rough, jagged crystalline structure on the surface.
Craftsmanship Details
Naturally formed through hydrothermal deposition where mineral-rich boiling water filled cracks in the earth's crust.
Authentication Indicators
Characteristic golden-yellow hue that does not change under different light angles (unlike pyrite); malleability (if tested with a needle); lack of crystal faces typical of fool's gold.
Origin & Maker
Natural geological formation; likely sourced from a riverbed or lode mining area (e.g., California, Alaska, or Australia).
Era & Period
Geological (formed millions of years ago).
Age Estimate
Formed millions of years ago during hydrothermal activity; recently discovered or extracted.
Cultural Significance
Gold-bearing quartz triggered the great gold rushes of the 19th century, leading to mass migrations and the founding of western cities.
Condition Notes
Natural/Raw. The specimen shows weathering and iron oxide patina. The gold is in situ and appears well-bonded to the quartz. Grade: Collectible Mineral Specimen.
Value Estimate
Subjective specimen value: $50 to $150 based on visibility of gold. The gold melt value is likely under $40, but specimen rarity adds a premium.
Care & Maintenance
Clean only with distilled water and a soft brush. Avoid harsh acids or ultrasonic cleaners which may fracture the quartz or dissolve mineralization.
Similar Items
Gold-filled quartz jewelry (lapidary-cut), Pyrite in shale (Fool's gold), or Chalcopyrite.
Interesting Facts
Most of the world's gold is found in quartz veins like this. It takes roughly 20 tons of rock like this to produce 1 ounce of pure gold in many commercial mines.