Sources & evidence
We analyze comparable sales from screener sessions and market records, then group them by shared object signals.
- Comparables
- 5
- Auction sources
- 5
- Records with images
- 1
- Coverage
- 2022-2026
Market Examples
Comparable market evidence
Recent auction and sale records linked to this worth guide's object signals.
Leonard Auction
Nov 13, 2022
$150
Geological Specimen Collection
View saleHill Auction Gallery
Jan 14, 2026
$125
Natural Mineral Stone & Crystal Specimen 16pc LOT
Sarasota Estate Auction
Jun 8, 2025
$250
Exquisite Tall Arrowhead-Shaped Blue Lace Agate Geode Slice on Wooden Stand
Exquisite Tall Arrowhead-Shaped Blue Lace Agate Geode Slice on Wooden Stand. This specimen would make an incredible addition to any mineral collection, and serve as a conversation piece or focal point to a display shelf. Size: 13 x 2 x 18 in. Agate is the banded variety of chalcedony which comes in a wide variety of colors. Primarily formed within volcanic a
View saleMonarch Auction and Estate Services
Mar 15, 2026
$270
Large Citrine Crystal Cathedral Geode Specimen
View saleLion and Unicorn
Oct 12, 2025
$2,200
Mineral Specimen, Lapis Lazuli
View saleIdentification
Key object facts
- Item Type
- geological specimen
- Category
- natural objects
- Material
- stone
- Motifs
- face-like form, pareidolia
Recognition Recognition signals
- Key identification signals include form geological specimen, material stone.
- A small, rounded, weathered stone or mineral object with natural surface erosion and dark fissures that create a face-like appearance.
- This guide is currently supported by 8 comparable-market records in the strongest linked screener session.
Drivers Value drivers
- Condition and completeness are material for geological specimen.
- Stone examples should be checked for wear, repairs, restoration, and replacement parts.
Market Market context
- The median selected comparable price for this cluster is about $250.
- Stone condition, restoration, and finish quality can materially shift asking and sold prices.
- This page currently surfaces 5 hand-selected comparable records for stone geological specimen.
Evidence
How this guide was assembled
- This worth guide is based on 1 supporting screener session clustered into the same topic.
- Observed value signals across supporting evidence span roughly $20 to $338.
- Overall evidence quality for this cluster is currently developing evidence.
- Comparable evidence is drawn from 5 auction sources in the selected evidence set.
Coverage
Source coverage and evidence quality
- The current cluster is supported by 1 screener session that normalized into the same worth topic.
- The strongest linked session for this cluster captured 8 comparable market records.
- Selected comparables span 5 distinct auction sources.
- Comparable dates on this page currently cover 2022-2026.
Questions
Frequently searched questions
What is a stone geological specimen?
This page is a market guide for identifying a stone geological specimen and understanding the main factors that influence collector demand and price.
What affects the value of a geological specimen?
Condition, completeness, maker or pattern attribution, dimensions, age, rarity, and comparable-market evidence all affect value.
What is the typical market range for stone geological specimen?
Current supporting screener evidence suggests a broad market range around $20 to $338, depending on condition and attribution.
Natural Stone Face?
This guide uses clustered screener evidence to help answer searches like "natural stone face" with identification notes, value drivers, and comparable-market context.
How much is stone geological specimen worth?
Value depends on maker, exact type, age, condition, and comparable sales. This guide keeps only selected market examples that match the geological specimen topic closely enough for public reference.
Intent
Related searches
Artist Market Index
Artist guides for maker comparison
When a worth question depends on a maker, signature, or attribution, compare this object guide with high-volume artist auction pages.
Next step
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