Natural Gold-Bearing Ore with Quartz Matrix
Raw Gold Ore (Lode Gold) · Native Yellow Gold (Naturally Alloyed with Silver/Electrum)
Purity: Geological variable; typically 70-90% native gold within inclusions; 17K to 22K natural fineness
Type
Raw Gold Ore (Lode Gold)
Purity
Geological variable; typically 70-90% native gold within inclusions; 17K to 22K natural fineness
Gold Type
Native Yellow Gold (Naturally Alloyed with Silver/Electrum)
Weight
Specimen total weight unknown; estimated gold content 0.5 - 2 grams per kilogram of rock
Description
This is a raw geological specimen of gold-bearing ore. It features visible native gold dispersed as minute grains and flakes within a complex mineral matrix consisting of milky quartz and darkened host rock (possibly basalt or schist). The gold exhibits the characteristic high-luster yellow metallic sheen that distinguishes it from 'fool's gold' (pyrite), which typically has a brassier, more brittle appearance.
Key Features
High-contrast of gold against dark minerals; presence of hydrothermal quartz; lack of crystal faces (native gold often appears as irregular masses).
Color & Finish
Vivid metallic yellow gold flecks against dark grey/black host rock and milky white quartz
Hallmarks & Stamps
None; natural geological specimen. No man-made markings.
Dimensions Estimate
Hand-sample size; approximately 10cm x 8cm x 5cm (estimated from photo scale)
Gemstones & Inlays
Natural Milky Quartz and Sulfide minerals (likely Pyrite or Galena)
Clasp & Closure
Not applicable; raw mineral specimen.
Chain & Links
Rough crystalline structure; jagged fracture surfaces; non-uniform mineral distribution
Craftsmanship Details
Natural crystalline formation; non-human manufacture; hydrothermal deposition texture.
Authentication Indicators
Sectility (gold is soft and malleable under a needle probe); color consistency regardless of light angle; association with quartz.
Origin & Maker
Natural Geological Deposit (likely Hydrothermal Vein); Mother Nature
Era & Period
Modern specimen gathering; Geological age likely millions of years (e.g., Paleozoic or Mesozoic)
Age Estimate
Geological formation: millions of years old; Extraction: Contemporary
Cultural Significance
The primary source of wealth for civilizations; represents the 'starting point' of the gold value chain from mine to mint.
Condition Notes
Natural unrefined state; sharp edges; dust and oxidation on secondary sulfide minerals; raw mine-run condition.
Value Estimate
Specimen Value: $50 - $250 depending on total gold content and aesthetic appeal; Gold melt value is minimal until refined.
Care & Maintenance
Keep dry to prevent sulfide oxidation; do not clean with harsh chemicals; display in a padded case to prevent shedding.
Similar Items
Iron Pyrite (Fool's Gold), Chalcopyrite, Arsenopyrite, and Gold-filled slag (industrial waste).
Interesting Facts
Most of the world's gold is actually microscopic within such rocks and requires chemical leaching to extract; visible gold specimens like this are prized by collectors.