Statements (54)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:Iron_Age
|
| gptkbp:appearance |
perfect in one direction
|
| gptkbp:care_instructions |
avoid harsh chemicals and extreme temperatures
|
| gptkbp:characteristic |
birefringent
|
| gptkbp:chemical_formula |
Al2 Si O4(F, OH)2
|
| gptkbp:color |
varies (yellow, blue, pink, colorless, etc.)
some varieties exhibit color change under different lighting |
| gptkbp:color_variation |
blue topaz, yellow topaz, pink topaz
|
| gptkbp:colors |
London blue topaz, Swiss blue topaz
|
| gptkbp:cultural_practices |
used in traditional medicine in some cultures
|
| gptkbp:cultural_references |
mentioned in literature and folklore
|
| gptkbp:cultural_symbol |
symbol of strength and intelligence
|
| gptkbp:cutting_styles |
commonly cut in faceted shapes
|
| gptkbp:difficulty |
8 on the Mohs scale
|
| gptkbp:discovery |
open-pit mining
|
| gptkbp:enhances |
may be treated to enhance color
|
| gptkbp:environmental_impact |
mining can have significant environmental effects
|
| gptkbp:famous_gemstones |
gptkb:The_Imperial_Topaz_of_Brazil
|
| gptkbp:famous_jewelry_designs |
featured in designer collections.
|
| gptkbp:famous_minerals |
often found alongside beryl and garnet
|
| gptkbp:gemological_properties |
analyzed using refractive index and specific gravity
|
| gptkbp:gemstone_quality |
evaluated based on cut, clarity, color, and carat weight
|
| gptkbp:geological_formation |
formed in granitic pegmatites
|
| gptkbp:historical_significance |
used in ancient civilizations for jewelry
|
| https://www.w3.org/2000/01/rdf-schema#label |
natural topaz
|
| gptkbp:is_visible_from |
transparent to translucent
|
| gptkbp:jewels |
gptkb:November
|
| gptkbp:local_art |
crafted by renowned jewelers
|
| gptkbp:luster |
vitreous
|
| gptkbp:market |
high demand for blue and pink varieties
|
| gptkbp:mineral_classification |
nesosilicate
|
| gptkbp:natural_resources |
silicate minerals
|
| gptkbp:notable_artifact |
gptkb:granite
|
| gptkbp:notable_collection |
collected by gem enthusiasts
|
| gptkbp:notable_exhibitions |
displayed in gem shows worldwide
|
| gptkbp:notable_figures |
believed to bring good fortune
|
| gptkbp:notable_locations |
gptkb:Topaz_Mountain,_Utah
Mines in Pakistan and Afghanistan |
| gptkbp:notable_products |
often used in high-end jewelry pieces
|
| gptkbp:occurs_in |
found in igneous rocks
|
| gptkbp:price_range |
varies widely based on color and clarity
|
| gptkbp:research |
studied for its unique properties
|
| gptkbp:source |
Brazil, Nigeria, Russia, and the USA
|
| gptkbp:structure |
orthorhombic
|
| gptkbp:surface |
3.49 -3.57
|
| gptkbp:symbolism |
associated with love and affection
|
| gptkbp:synthetic_varieties |
synthetic topaz is produced for industrial use
|
| gptkbp:toughness |
good toughness
|
| gptkbp:treatment |
often heat-treated or irradiated
|
| gptkbp:trends |
trends in gemstone market affect pricing
|
| gptkbp:uses |
gptkb:jewelry
|
| gptkbp:varieties |
gptkb:Imperial_topaz
|
| gptkbp:bfsParent |
gptkb:Synthetic_Topaz
|
| gptkbp:bfsLayer |
6
|