Star of India sapphire
E303167
The Star of India sapphire is one of the world’s largest and most famous star sapphires, renowned for its striking asterism and pale blue color.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Star of India sapphire canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2851457 — 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: Star of India sapphire Context triple: [American Museum of Natural History, hasNotableObject, Star of India sapphire]
-
A.
Koh-i-Noor diamond
The Koh-i-Noor diamond is a historically famous and controversial large colorless diamond of Indian origin that has passed through various royal hands and now resides in the British royal regalia.
-
B.
Hope Diamond
The Hope Diamond is a famous deep-blue, 45.52-carat diamond renowned for its size, rare color, storied history, and legends of a curse.
-
C.
Stuart Sapphire
The Stuart Sapphire is a historic blue sapphire of royal provenance, prominently set in the British Imperial State Crown.
-
D.
Regent Diamond
The Regent Diamond is a famed 140.64-carat Indian diamond renowned for its exceptional clarity and long association with French royalty and the French Crown Jewels.
-
E.
Jewel of Western India
Jewel of Western India is a popular nickname for the Indian state of Gujarat, highlighting its economic vitality, rich culture, and historical significance in the western region of the country.
- 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: Star of India sapphire Target entity description: The Star of India sapphire is one of the world’s largest and most famous star sapphires, renowned for its striking asterism and pale blue color.
-
A.
Koh-i-Noor diamond
The Koh-i-Noor diamond is a historically famous and controversial large colorless diamond of Indian origin that has passed through various royal hands and now resides in the British royal regalia.
-
B.
Hope Diamond
The Hope Diamond is a famous deep-blue, 45.52-carat diamond renowned for its size, rare color, storied history, and legends of a curse.
-
C.
Stuart Sapphire
The Stuart Sapphire is a historic blue sapphire of royal provenance, prominently set in the British Imperial State Crown.
-
D.
Regent Diamond
The Regent Diamond is a famed 140.64-carat Indian diamond renowned for its exceptional clarity and long association with French royalty and the French Crown Jewels.
-
E.
Jewel of Western India
Jewel of Western India is a popular nickname for the Indian state of Gujarat, highlighting its economic vitality, rich culture, and historical significance in the western region of the country.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
famous gemstone
ⓘ
gemstone ⓘ star sapphire ⓘ |
| approximateDiscoveryPeriod | 19th century ⓘ |
| associatedWith |
American Museum of Natural History
ⓘ
surface form:
American Museum of Natural History gem hall
|
| asterismCause |
oriented needle-like inclusions
ⓘ
rutile inclusions ⓘ |
| cityLocatedIn | New York City ⓘ |
| clarityFeature | silky appearance ⓘ |
| collection |
American Museum of Natural History
ⓘ
surface form:
gem and mineral collection of the American Museum of Natural History
|
| color | pale blue ⓘ |
| continentOfOrigin | Asia ⓘ |
| countryLocatedIn |
United States of America
ⓘ
surface form:
United States
|
| countryOfOrigin | Sri Lanka ⓘ |
| currentLocation | American Museum of Natural History ⓘ |
| cut | cabochon ⓘ |
| displayStatus | on public display ⓘ |
| donatedBy | J. P. Morgan ⓘ |
| donationType | gift ⓘ |
| eraOfDonation | early 20th century ⓘ |
| fameStatus | one of the most famous star sapphires in the world ⓘ |
| famousFor |
distinct star effect
ⓘ
large size ⓘ pale blue color ⓘ |
| gemType | sapphire ⓘ |
| hardnessOnMohsScale | 9 ⓘ |
| housedIn |
American Museum of Natural History
ⓘ
surface form:
American Museum of Natural History, New York City
|
| impuritiesCausingColor | titanium and iron ⓘ |
| material | aluminum oxide ⓘ |
| mineral | corundum ⓘ |
| notableFeature |
asterism
ⓘ
star-shaped pattern ⓘ |
| numberOfRaysInStar | six-rayed star ⓘ |
| origin | Sri Lanka ⓘ |
| publicPerception | iconic museum gemstone ⓘ |
| ranking | one of the largest known star sapphires ⓘ |
| recovered | yes ⓘ |
| recoveryDate | 1965 ⓘ |
| securityIncident | stolen in 1964 ⓘ |
| theftEvent | 1964 jewel heist at the American Museum of Natural History ⓘ |
| touristAttraction | yes ⓘ |
| weight | approximately 563.35 carats ⓘ |
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: Star of India sapphire Description of subject: The Star of India sapphire is one of the world’s largest and most famous star sapphires, renowned for its striking asterism and pale blue color.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.