Natural Gold-Bearing Ore with Exposed Gold Flake
Raw Gold Ore (Lode Gold specimen) · Natural Yellow Gold in Matrix
Purity: Approximately 20K to 23K (83% - 97% fineness) for the visible gold inclusion. Raw gold is rarely pure 24K and typically contains silver and iron alloys.
Type
Raw Gold Ore (Lode Gold specimen)
Purity
Approximately 20K to 23K (83% - 97% fineness) for the visible gold inclusion. Raw gold is rarely pure 24K and typically contains silver and iron alloys.
Gold Type
Natural Yellow Gold in Matrix
Weight
The total rock specimen appears to be several grams; however, the visible gold content represents a minute fraction, likely less than 0.05 grams (milligram range).
Description
This is a raw geological specimen of lode gold (gold found in its original rock matrix). The image shows a small, jagged inclusion of crystalline gold nestled within a dark, mineralized matrix featuring heavy iron staining (rust-colored gossan) and metallic sulfide sheen. This represents the 'raw' form of gold before any refinement or craftsmanship.
Key Features
Crystalline structure of the metal, distinct buttery-yellow luster that does not tarnish, and its location within a mineralized 'vug' or crack in the host rock.
Color & Finish
Vivid buttery yellow for the gold inclusion; the host rock (matrix) is dark grey, reddish-brown (iron oxidation), and metallic silver-grey (likely sulfides).
Hallmarks & Stamps
None. As a raw geological specimen, there are no man-made markings.
Dimensions Estimate
The visible gold flake is micro-scale (approx. 1mm - 2mm). The host rock specimen shown in the crop is estimated at 3cm - 5cm in width.
Gemstones & Inlays
None. The gold is naturally embedded within a quartz and iron-rich sulfide matrix.
Clasp & Closure
Not applicable (raw mineral specimen).
Chain & Links
Not applicable.
Craftsmanship Details
None (Nature-forged). The texture is the result of high-pressure hydrothermal fluids cooling in rock fissures.
Authentication Indicators
The color remains consistent even in shadow, unlike pyrite (fool's gold) which changes significantly with light angles. The presence of 'limonite' (rusty staining) is a classic geological indicator of gold-bearing veins.
Origin & Maker
Natural geological formation; origin unknown without site-specific data, though visual characteristics are consistent with 'Hard Rock' mining typical of California, Australia, or Ontario.
Era & Period
Geological/Prehistoric. Formed millions of years ago through hydrothermal deposition.
Age Estimate
Millions of years old; recently extracted from a geological formation.
Cultural Significance
Gold ore sparked the Great Gold Rushes of the 19th century, driving global migration and the development of the American West, Australia, and South Africa.
Condition Notes
Raw/Unprocessed. The host rock shows fracturing. The gold is partially obscured by the surrounding mineral layers. Condition grade: Natural Specimen.
Value Estimate
The value is primarily ‘collector value’ as a specimen rather than 'melt value.' The gold content is worth negligible amounts (cents/pennies), while the specimen might sell for $10-$30 to a mineral collector.
Care & Maintenance
Keep dry to prevent further oxidation of the sulfide matrix. Store in a padded display box to prevent the brittle host rock from crumbling and losing the gold flake.
Similar Items
Chalcopyrite or Pyrite (Fool's Gold). Unlike this specimen, Pyrite is more brittle, forms perfect cubes, and has a more brassy/greenish tint compared to the soft, deep yellow of true gold.
Interesting Facts
Most of the world's gold is found in this 'microscopic' form within rocks; finding visible 'free-gold' flakes in ore like this is relatively rare in many commercial mining operations today.