Petoskey stones
E69375
Petoskey stones are distinctive fossilized coral stones, often polished as gemstones, that are especially associated with the area around Petoskey, Michigan.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Petoskey stone | 11 |
| Petoskey stones canonical | 4 |
| Petoskey stone coral | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T553759 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Petoskey stones Context triple: [Petoskey, Michigan, knownFor, Petoskey stones]
-
A.
Tuckahoe marble
Tuckahoe marble is a high-quality white to gray dolomitic marble historically quarried in Westchester County, New York, widely used in prominent 19th-century American buildings and monuments.
-
B.
Tura limestone
Tura limestone is a fine white Egyptian limestone historically prized for its high quality and used as the outer casing stone for major monuments such as the Great Pyramid of Giza.
-
C.
Anston limestone
Anston limestone is a durable, fine-grained building stone from Anston in South Yorkshire, England, historically quarried for major 19th-century architectural projects.
-
D.
Tennessee marble
Tennessee marble is a high-quality, pinkish to gray crystalline limestone from eastern Tennessee widely used as an ornamental building stone in prominent U.S. monuments and architecture.
-
E.
Quartz
Quartz is a digital news outlet known for its global business journalism, data-driven reporting, and mobile-first storytelling.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Petoskey stones Target entity description: Petoskey stones are distinctive fossilized coral stones, often polished as gemstones, that are especially associated with the area around Petoskey, Michigan.
-
A.
Tuckahoe marble
Tuckahoe marble is a high-quality white to gray dolomitic marble historically quarried in Westchester County, New York, widely used in prominent 19th-century American buildings and monuments.
-
B.
Tura limestone
Tura limestone is a fine white Egyptian limestone historically prized for its high quality and used as the outer casing stone for major monuments such as the Great Pyramid of Giza.
-
C.
Anston limestone
Anston limestone is a durable, fine-grained building stone from Anston in South Yorkshire, England, historically quarried for major 19th-century architectural projects.
-
D.
Tennessee marble
Tennessee marble is a high-quality, pinkish to gray crystalline limestone from eastern Tennessee widely used as an ornamental building stone in prominent U.S. monuments and architecture.
-
E.
Quartz
Quartz is a digital news outlet known for its global business journalism, data-driven reporting, and mobile-first storytelling.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
fossil
ⓘ
fossil coral ⓘ gemstone ⓘ rock ⓘ state stone ⓘ tourist attraction ⓘ |
| age | about 350 million years ⓘ |
| associatedWith |
Charlevoix, Michigan
ⓘ
Petoskey State Park ⓘ Traverse City, Michigan ⓘ |
| category |
Devonian fossils
ⓘ
fossils of the United States ⓘ symbols of Michigan ⓘ tourist attractions in Michigan ⓘ |
| collectionMethod |
rock hunting after storms
ⓘ
surface collecting on beaches ⓘ |
| color |
gray
ⓘ
light brown ⓘ |
| commonUseLocation | gift shops in northern Michigan ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| culturalSignificance | regional symbol of northern Michigan ⓘ |
| environmentOfFormation | shallow warm sea ⓘ |
| formedFrom | Hexagonaria percarinata coral ⓘ |
| fossilType | colonial coral fossil ⓘ |
| foundIn |
Lake Michigan shoreline
ⓘ
Little Traverse Bay ⓘ northwestern Lower Peninsula of Michigan ⓘ |
| geologicalPeriod |
Devonian
ⓘ
linked to:
Devonian Period
|
| hardness | relatively soft ⓘ |
| locatedInTheAdministrativeTerritorialEntity | Michigan ⓘ |
| material |
calcite
ⓘ
fossilized rugose coral ⓘ |
| namedAfter |
Petoskey, Michigan
ⓘ
linked to:
Petoskey, Michigan, United States
|
| officialStatus | official state stone of Michigan ⓘ |
| officialStatusStartDate | 1965 ⓘ |
| pattern |
hexagonal coral cell pattern
ⓘ
honeycomb-like appearance ⓘ |
| polishability | takes a high polish ⓘ |
| popularIn | rockhounding community ⓘ |
| taxonOfOrigin | Hexagonaria percarinata ⓘ |
| tourismImpact | attract rock collectors and tourists ⓘ |
| usedAs |
decorative stone
ⓘ
jewelry material ⓘ paperweight ⓘ polished gemstone ⓘ souvenir ⓘ |
| visibilityWhenWet | coral pattern becomes more distinct when wet ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Petoskey stones Description of subject: Petoskey stones are distinctive fossilized coral stones, often polished as gemstones, that are especially associated with the area around Petoskey, Michigan.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Petoskey, Michigan, United States
subject linked to:
Petoskey, Michigan, United States
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones
linked to: Petoskey stones