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gptkbp:instance_of
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gptkb:Iron_Age
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gptkbp:composed_of
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Silica and water
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gptkbp:difficulty
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5.5 to 6.5 on Mohs scale
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gptkbp:formed
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Volcanic activity
Silica gel
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gptkbp:has_color
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Various colors
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https://www.w3.org/2000/01/rdf-schema#label
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Opal Stone
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gptkbp:is_a
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gptkb:jewelry
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gptkbp:is_a_source_of
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gptkb:Indonesia
gptkb:Brazil
gptkb:Canada
gptkb:China
gptkb:Ethiopia
gptkb:India
gptkb:Italy
gptkb:Mexico
gptkb:Russia
gptkb:Spain
gptkb:Tanzania
gptkb:Turkey
gptkb:United_States
gptkb:Honduras
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gptkbp:is_associated_with
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October birthstone
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gptkbp:is_considered
|
A birthstone for Libra
A birthstone for Sagittarius
A birthstone for Scorpio
Symbol of hope and purity
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gptkbp:is_found_in
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gptkb:Australia
Sedimentary rocks
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gptkbp:is_known_for
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gptkb:Fire
Brightness
Translucency
Color play
Play of color
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gptkbp:is_used_in
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gptkb:earrings
gptkb:jewelry
Collectibles
Artisan crafts
Decorative items
Necklaces
Bracelets
Engagement rings
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gptkbp:is_valued_for
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Unique patterns
|
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gptkbp:luster
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Vitreous to pearly
|
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gptkbp:scientific_classification
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Fire opal
Boulder opal
Common opal
Crystal opal
Matrix opal
Precious opal
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gptkbp:sensitivity
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Heat and light
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gptkbp:treatment
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Stabilization
Dyeing
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gptkbp:bfsParent
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gptkb:Ron_Perlman
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gptkbp:bfsLayer
|
5
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