|
gptkbp:instance_of
|
gptkb:Iron_Age
|
|
gptkbp:associated_with
|
gptkb:Vision
gptkb:communication
gptkb:spirituality
introspection
|
|
gptkbp:color
|
gptkb:violet
|
|
gptkbp:composed_of
|
Mg2 Al4 Si5 O18
|
|
gptkbp:cut
|
gptkb:beadwork
carvings
cabochon
faceted
|
|
gptkbp:difficulty
|
7.0
|
|
gptkbp:discovery
|
ancient times
open-pit mining
underground mining
|
|
gptkbp:famous_for
|
transparency
color change
gem quality
pleochroism effect
|
|
gptkbp:historical_use
|
gptkb:navigation
gptkb:decorative_arts
gptkb:jewelry
amulets
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
natural Iolite
|
|
gptkbp:is_found_in
|
metamorphic rocks
|
|
gptkbp:is_similar_to
|
gptkb:tanzanite
gptkb:Diamonds
gptkb:lapis_lazuli
|
|
gptkbp:is_visible_from
|
transparent
|
|
gptkbp:jewels
|
September
|
|
gptkbp:location
|
gptkb:Brazil
gptkb:India
gptkb:Tanzania
gptkb:Sri_Lanka
gptkb:Madagascar
|
|
gptkbp:luster
|
vitreous
|
|
gptkbp:natural_resources
|
gptkb:cordierite
|
|
gptkbp:notable_locations
|
gptkb:Ceylon
gptkb:Andhra_Pradesh
Kilimanjaro region
|
|
gptkbp:optical_property
|
pleochroism
|
|
gptkbp:pleochroism_colors
|
gptkb:blue
gptkb:violet
yellow-brown
|
|
gptkbp:structure
|
orthorhombic
|
|
gptkbp:surface
|
2.66
|
|
gptkbp:treatment
|
heat treatment
irradiation
|
|
gptkbp:uses
|
gptkb:jewelry
|
|
gptkbp:values
|
varies by quality
affordable compared to sapphires
|
|
gptkbp:bfsParent
|
gptkb:Synthetic_Iolite
|
|
gptkbp:bfsLayer
|
6
|