Opal
E60368
Opal is a precious gemstone renowned for its vibrant play-of-color and is especially associated with major deposits in Australia.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Opal canonical | 5 |
| Opals | 2 |
| Australian black opal | 1 |
| Opal Capital of the World | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T484341 — 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: Opal Context triple: [South Australia, hasStateGemstone, Opal]
-
A.
Zella
Zella is an activewear and athleisure clothing brand known for its performance-focused yet stylish designs, sold at Nordstrom.
-
B.
Lapis Niger
Lapis Niger is an ancient black stone shrine and inscribed pavement in Rome’s Forum Romanum, traditionally associated with early Roman religious or funerary practices and sometimes linked to the legendary king Romulus.
-
C.
Kimberly
Kimberly is a feminine given name of English origin that has been widely used in the United States since the mid-20th century.
-
D.
Goldie
Goldie is a character portrayed by actress and model Jaime King, best known from the neo-noir film "Sin City."
-
E.
Loralai
Loralai is a town and district in northern Balochistan, Pakistan, known historically as a regional administrative and trade center.
- 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: Opal Target entity description: Opal is a precious gemstone renowned for its vibrant play-of-color and is especially associated with major deposits in Australia.
-
A.
Zella
Zella is an activewear and athleisure clothing brand known for its performance-focused yet stylish designs, sold at Nordstrom.
-
B.
Lapis Niger
Lapis Niger is an ancient black stone shrine and inscribed pavement in Rome’s Forum Romanum, traditionally associated with early Roman religious or funerary practices and sometimes linked to the legendary king Romulus.
-
C.
Kimberly
Kimberly is a feminine given name of English origin that has been widely used in the United States since the mid-20th century.
-
D.
Goldie
Goldie is a character portrayed by actress and model Jaime King, best known from the neo-noir film "Sin City."
-
E.
Loralai
Loralai is a town and district in northern Balochistan, Pakistan, known historically as a regional administrative and trade center.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
gemstone
ⓘ
mineraloid ⓘ |
| canExhibit | crazing ⓘ |
| containsComponent | water ⓘ |
| containsElement |
oxygen
ⓘ
silicon ⓘ |
| formsBy | precipitation from silica-rich solutions ⓘ |
| formsIn |
sedimentary rocks
ⓘ
volcanic rocks ⓘ |
| hasChemicalComposition | hydrated silica ⓘ |
| hasChemicalFormula | SiO2·nH2O ⓘ |
| hasCleavage | none ⓘ |
| hasColor |
black
ⓘ
blue ⓘ colorless ⓘ orange ⓘ red ⓘ white ⓘ |
| hasCrystalSystem | amorphous ⓘ |
| hasFracture | conchoidal ⓘ |
| hasLuster |
vitreous
ⓘ
waxy ⓘ |
| hasMajorDepositIn |
Australia
ⓘ
Brazil ⓘ Ethiopia ⓘ Mexico ⓘ United States ⓘ
linked to:
United States of America
|
| hasMohsHardness | 5.5–6.5 ⓘ |
| hasOpticalEffect |
opalescence
ⓘ
play-of-color ⓘ |
| hasRefractiveIndex | 1.37–1.52 ⓘ |
| hasSpecificGravity | 1.9–2.3 ⓘ |
| hasTypicalTransparency | transparent to opaque ⓘ |
| hasVariety |
black opal
ⓘ
boulder opal ⓘ common opal ⓘ crystal opal ⓘ fire opal ⓘ matrix opal ⓘ precious opal ⓘ white opal ⓘ |
| isAssociatedWithCountry | Australia ⓘ |
| isBirthstoneFor | October ⓘ |
| isNationalGemstoneOf | Australia ⓘ |
| isPrimarilyFoundIn | Australia ⓘ |
| isRenownedFor | vibrant play-of-color ⓘ |
| isSensitiveTo |
dehydration
ⓘ
sudden temperature changes ⓘ |
| isUsedFor |
jewelry
ⓘ
ornamental objects ⓘ |
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: Opal Description of subject: Opal is a precious gemstone renowned for its vibrant play-of-color and is especially associated with major deposits in Australia.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Opal
linked to: Opal
linked to: Opal
subject linked to:
astrological sign Libra
linked to: Opal