Natural Gold Ore Specimen with Pyrite in Quartz Matrix
Raw Gold (Nugget, Flake, and Micro-crystalline in Host Rock) · Natural Yellow Gold in Earth Alloy (Silver/Copper)
Purity: Estimated 20K to 23K (83% - 96%). Natural gold is rarely 24K and contains silver or copper alloys occurring naturally.
Type
Raw Gold (Nugget, Flake, and Micro-crystalline in Host Rock)
Purity
Estimated 20K to 23K (83% - 96%). Natural gold is rarely 24K and contains silver or copper alloys occurring naturally.
Gold Type
Natural Yellow Gold in Earth Alloy (Silver/Copper)
Weight
Total specimen weight unknown; visual estimate of gold content is less than 0.5 grams. Value is in the specimen rarity, not bulk melt.
Description
An intriguing raw mineral specimen featuring micro-crystalline gold and associated pyrite embedded within a white-to-grey quartz host rock. The piece shows the classic 'lode gold' formation where hydrothermal fluids deposited precious metals into rock fractures. The gold displays a buttery yellow color that contrasts against the sharper, more brassy geometric faces of the accompanying iron sulfides.
Key Features
Presence of native 'leaf' or 'flour' gold; quartz matrix association; high contrast between gold and pyrite indicators.
Color & Finish
Brassy yellow to bright golden hue; raw vitreous luster on the matrix with metallic luster on the mineral inclusions.
Hallmarks & Stamps
None. As a geological specimen, it lacks man-made stamps or assay marks.
Dimensions Estimate
Estimated 15mm x 20mm for the visible portion; small pocket-sized hand specimen.
Gemstones & Inlays
Natural Quartz (Matrix) and Iron Pyrite (Fool's Gold) crystals. No faceted gemstones.
Clasp & Closure
Not applicable (Raw mineral specimen).
Chain & Links
Not applicable; however, the 'links' are the molecular bonds between the gold atoms and the quartz matrix.
Craftsmanship Details
Natural 'Earth-forged' construction. No human tool marks visible other than the rough fracture lines from the mining extraction process.
Authentication Indicators
Sectility (gold can be cut or dented without shattering, unlike pyrite); color consistency under different lighting; lack of crystal cleavage in gold sections.
Origin & Maker
Natural Geological Deposit; likely from a lode mine in regions like California (USA), Australia, or Ontario (Canada).
Era & Period
Geological Era (Proteorozoic to Cenozoic depending on mine location); Contemporary collection period.
Age Estimate
Formation age ranges from millions to billions of years; modern recovery (estimated 2000-present).
Cultural Significance
Represents the 'Gold Rush' heritage; symbolizes the primary form of wealth before coinage and jewelry manufacturing.
Condition Notes
Raw/Unrefined state. The quartz is fractured (typical of extraction). Some oxidation may be present on the sulfide minerals. Overall grade: Collector Grade Specimen.
Value Estimate
Melt value is nominal ($10-$30); Specimen value for a collector could range from $50-$150 depending on the percentage of visible gold.
Care & Maintenance
Keep dry to prevent oxidation of associated sulfides. Do not clean with harsh chemicals or ultrasonic cleaners as it may dislodge gold flakes from the quartz.
Similar Items
Pyrite (Fool's Gold) - which is brittle and shatters; Chalcopyrite - which has a greenish tint; Mica - which peels in thin, transparent layers.
Interesting Facts
Most of the world's gold was delivered to Earth's crust by asteroid impacts billions of years ago. Only about 1 part per billion of the Earth's crust is gold.