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gptkbp:instance_of
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gptkb:opera
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gptkbp:bfsLayer
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3
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gptkbp:bfsParent
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gptkb:Q-CTRL
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gptkbp:difficulty
|
5.5 to 6.5 on Mohs scale
|
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gptkbp:formed
|
Silica
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gptkbp:has_color
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gptkb:Black
gptkb:battle
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gptkbp:held_in
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gptkb:item
|
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https://www.w3.org/2000/01/rdf-schema#label
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Black Opal
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gptkbp:is_a
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gptkb:item
|
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gptkbp:is_a_source_of
|
gptkb:Lightning_Ridge
Various Countries
Various Mines
|
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gptkbp:is_associated_with
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gptkb:Politician
gptkb:Wealth
October Birthstone
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gptkbp:is_characterized_by
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Dark Body Tone
|
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gptkbp:is_considered
|
gptkb:Symbol_of_Hope
gptkb:National_Gem_of_Australia
gptkb:archaeological_site
gptkb:TV_Show
gptkb:book
Artistic Expression
Luxury Item
Symbol of Protection
Investment Gemstone
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gptkbp:is_evaluated_by
|
gptkb:Rarity
Market Demand
Gemologists
Color Play
|
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gptkbp:is_featured_in
|
Exhibitions
Gem Shows
|
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gptkbp:is_found_in
|
gptkb:Australia
gptkb:Mexico
gptkb:Monarch
gptkb:Boulder_Opal
Various Locations
Various Sizes
Jewelry Collections
|
|
gptkbp:is_known_for
|
gptkb:Luster
Cultural Significance
Vibrant Colors
Brilliance
Color Variations
High Value
Unique Patterns
Unique Characteristics
|
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gptkbp:is_often_compared_to
|
Other Opals
|
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gptkbp:is_often_used_in
|
gptkb:item
|
|
gptkbp:is_part_of
|
gptkb:Jewelry_Industry
Silicate Minerals
Mineral Collection
Gemstone Market
Natural Gemstones
|
|
gptkbp:is_popular_in
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Fine Jewelry
|
|
gptkbp:is_sought_after_by
|
gptkb:Company
gptkb:museum
gptkb:collection
|
|
gptkbp:is_used_in
|
gptkb:museum
gptkb:brand
gptkb:item
Traditional Crafts
Decorative Items
Artisan Crafts
Luxury Jewelry
Engagement Rings
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gptkbp:is_valued_for
|
gptkb:color
|