Raw Natural Gold-Bearing Quartz Ore Fragment
Raw Gold (nugget/flake/ore) · Natural Yellow Gold with iron oxide and quartz host rock (matrix).
Purity: Natural unrefined gold is typically 20K to 22K (83% - 92% purity) in its native state, mixed with silver and copper alloys. This specific piece is a raw specimen, not a hallmarked alloy.
Type
Raw Gold (nugget/flake/ore)
Purity
Natural unrefined gold is typically 20K to 22K (83% - 92% purity) in its native state, mixed with silver and copper alloys. This specific piece is a raw specimen, not a hallmarked alloy.
Gold Type
Natural Yellow Gold with iron oxide and quartz host rock (matrix).
Weight
Estimated 0.5 to 1.5 grams total weight, including the host rock. The actual gold content (specific gravity) appears to be a fraction of the total weight.
Description
A raw, unrefined piece of gold ore featuring visible yellow gold filaments and clusters embedded within a dark, mineralized matrix. The specimen shows significant iron oxide staining, giving it a 'rusty' or 'burnt' appearance common in high-grade gold-bearing quartz veins. This is a primary source specimen rather than a secondary alluvial nugget, showing the gold exactly as it occurs in nature before processing.
Key Features
Heterogeneous mineral composition, visible gold stringers, jagged surface geometry, and the absence of any man-made refining marks.
Color & Finish
Raw, dull to metallic luster in specific areas. The colors include pale gold yellow, deep reddish-brown (iron staining), and dark grey to black host material with a rough, fractured surface.
Hallmarks & Stamps
None. As a raw geological specimen, there are no stamps or maker's marks. Authentication relies on physical properties like specific gravity and hardness.
Dimensions Estimate
Approximately 15mm in length and 8mm in width. It is a petite specimen held between fingertips for scale.
Gemstones & Inlays
No gemstones. The specimen consists of natural mineral inclusions, primarily quartz and likely hematite or limonite (the reddish-brown oxidation).
Clasp & Closure
Not applicable; raw specimen.
Chain & Links
Not applicable; raw specimen. The texture is characterized by jagged crystalline growth and irregular fracture planes.
Craftsmanship Details
N/A - This is a natural geological formation with no human craftsmanship involved.
Authentication Indicators
Color hue is consistent with native gold; lack of cleavage in the gold flakes; irregular, non-geometric growth patterns; presence of associated minerals like quartz and iron oxides.
Origin & Maker
Unknown geographic origin, but typical of hard-rock mining districts (e.g., California, Australia, or Alaska). Nature is the maker.
Era & Period
Modern Discovery; Geological in origin. No specific design era.
Age Estimate
Geologically millions of years old; recently extracted (likely within the last 1-10 years based on the lack of river-worn rounding).
Cultural Significance
Represents the 'Gold Rush' heritage and the primary industry of prospecting. Specimens like this are often kept as 'specimen gold' which can hold more value to collectors than the melt value of the gold alone.
Condition Notes
Raw/Natural. The specimen is in its 'as-found' state. There is significant host rock attached, which is desirable for mineral collectors but reduces the total gold-to-weight ratio for bullion investors.
Value Estimate
Primarily valued as a mineral specimen. Melt value is likely negligible ($10-$40), but as a collector's specimen, it may command $50-$100 depending on the total gold visibility.
Care & Maintenance
Keep dry to prevent further oxidation of associated iron minerals; store in a plastic gem jar or display case; do not clean with harsh chemicals as it may dissolve the host rock or the gold filaments.
Similar Items
Pyrite (Fool's Gold) which has a more brassy color and cubic structure; Chalcopyrite which has a peacock-like tarnish; and refined 24K bullion which lacks the host rock matrix.
Interesting Facts
Most of the world's gold was delivered to Earth's crust by asteroid impacts billions of years ago. A piece of ore like this usually must be crushed and chemically treated (cyanidation or smelting) to extract the pure metal.