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gptkbp:instance_of
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gptkb:item
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gptkbp:bfsLayer
|
4
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gptkbp:bfsParent
|
gptkb:Ron_Perlman
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gptkbp:awards
|
Vitreous to pearly
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gptkbp:composed_of
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Silica and water
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gptkbp:difficulty
|
5.5 to 6.5 on Mohs scale
|
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gptkbp:formed
|
Volcanic activity
Silica gel
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gptkbp:has_color
|
Various colors
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https://www.w3.org/2000/01/rdf-schema#label
|
Opal Stone
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gptkbp:is_a
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gptkb:item
|
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gptkbp:is_a_source_of
|
gptkb:horse_race
gptkb:Indonesia
gptkb:Brazil
gptkb:China
gptkb:India
gptkb:Italy
gptkb:Mexico
gptkb:Monarch
gptkb:Russia
gptkb:Spain
gptkb:Tanzania
gptkb:United_States
gptkb:Honduras
gptkb:Native_American_tribe
|
|
gptkbp:is_associated_with
|
October birthstone
|
|
gptkbp:is_considered
|
A birthstone for Libra
A birthstone for Sagittarius
A birthstone for Scorpio
Symbol of hope and purity
|
|
gptkbp:is_found_in
|
gptkb:Australia
Sedimentary rocks
|
|
gptkbp:is_known_for
|
gptkb:Fire_Department
Brightness
Translucency
Color play
Play of color
|
|
gptkbp:is_used_in
|
gptkb:item
Collectibles
Artisan crafts
Decorative items
Necklaces
Bracelets
Engagement rings
|
|
gptkbp:is_valued_for
|
Unique patterns
|
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gptkbp:scientific_classification
|
Fire opal
Boulder opal
Common opal
Crystal opal
Matrix opal
Precious opal
|
|
gptkbp:sensor
|
Heat and light
|
|
gptkbp:treatment
|
Stabilization
Dyeing
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