Natural Pyrite in Host Rock (Fools Gold)
Raw Mineral Specimen (Non-Gold) · Pyrite (Iron Disulfide FeS2)
Purity: 0% (Non-Gold)
Type
Raw Mineral Specimen (Non-Gold)
Purity
0% (Non-Gold)
Gold Type
Pyrite (Iron Disulfide FeS2)
Weight
Undetermined based on host rock size
Description
A raw mineral specimen featuring brassy, metallic inclusions embedded within a dark, textured host rock. Often mistaken for gold by those unfamiliar with mineralogy, this is a classic example of Iron Pyrite, characterized by its brittle nature and cubic crystal structure which differs significantly from the malleability of real gold.
Key Features
Metallic brassy luster, dark host rock matrix, absence of malleability, geometric crystal habits
Color & Finish
Metallic brassy yellow with high luster
Hallmarks & Stamps
None - Natural geological formation
Dimensions Estimate
Specimen appears to be 5-10cm in length based on finger scale
Gemstones & Inlays
None; metallic cubic or amorphous pyrite clusters
Clasp & Closure
Not applicable
Chain & Links
Not applicable
Craftsmanship Details
Natural geological crystallization; no human craftsmanship present.
Authentication Indicators
Color is too brassy/greenish compared to the rich yellow of gold; lacks malleability; streak test would likely be greenish-black (gold is gold-yellow)
Origin & Maker
Natural earth formation; common in metamorphic or sedimentary rock
Era & Period
Geological formation; millions of years old
Age Estimate
Formed over geological timescales (millions of years)
Cultural Significance
Famous historically for tricking prospectors during the California Gold Rush, leading to the name 'Fools Gold'.
Condition Notes
Natural raw state with weathered surface and oxidation signs on host rock
Value Estimate
Nominal collector value for a raw specimen ($5-$20); negligible precious metal value.
Care & Maintenance
Keep in a dry environment to prevent 'pyrite disease' (oxidation/disintegration from humidity).
Similar Items
Native Gold Nuggets (softer, darker yellow, no cubic structure) or Chalcopyrite (softer, often iridescent).
Interesting Facts
Pyrite can actually spark when struck against steel, which led to its use in wheel-lock firearms and earns it the name 'fire stone' in Greek.