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gptkbp:instance_of
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gptkb:item
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gptkbp:bfsLayer
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4
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gptkbp:bfsParent
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gptkb:The_Red_Spinel_of_the_Crown_Jewels
gptkb:lab-created_spinel
gptkb:rubellite_spinel
gptkb:Spessartine
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gptkbp:awards
|
vitreous
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gptkbp:characteristics
|
high density
birefringence
high refractive index
transparent to opaque
pleochroism
non-fluorescent
low birefringence
strong dispersion
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gptkbp:color
|
varies
|
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gptkbp:difficulty
|
7.5 to 8 on Mohs scale
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|
https://www.w3.org/2000/01/rdf-schema#label
|
spinel
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gptkbp:ingredients
|
Mg Al2 O4
|
|
gptkbp:is_found_in
|
gptkb:Monarch
gptkb:Myanmar
gptkb:Pakistan
gptkb:Politician
gptkb:Russia
gptkb:Tanzania
gptkb:United_States
gptkb:Sri_Lanka
gptkb:Madagascar
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gptkbp:occurs_in
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found in metamorphic rocks
|
|
gptkbp:related_to
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gptkb:Zord
gptkb:Ferengi
gptkb:concert_tour
gptkb:item
aluminum oxide
bauxite
topaz
apatite
corundum
|
|
gptkbp:social_structure
|
isometric
|
|
gptkbp:uses
|
gptkb:item
industrial applications
|
|
gptkbp:varieties
|
gptkb:black_spinel
gptkb:blue_spinel
gptkb:pink_spinel
gptkb:purple_spinel
gptkb:colorless_spinel
gptkb:green_spinel
gptkb:orange_spinel
gptkb:ruby_spinel
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