Statements (33)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
granite
|
| gptkbp:chemicalFormula |
(Na,Ca)(Al,Li)3Al6(BO3)3Si6O18(OH)4
|
| gptkbp:color |
neon blue
greenish blue violet-blue |
| gptkbp:color_caused_by |
copper
manganese |
| gptkbp:containsElement |
copper
manganese |
| gptkbp:discoveredBy |
gptkb:Heitor_Dimas_Barbosa
gptkb:Paraíba,_Brazil 1989 |
| gptkbp:gemstone_family |
tourmaline group
|
| gptkbp:hardnessMohs |
7-7.5
|
| gptkbp:hasVariant |
tourmaline
|
| https://www.w3.org/2000/01/rdf-schema#label |
Paraiba Tourmaline
|
| gptkbp:luster |
vitreous
|
| gptkbp:marketedAs |
gptkb:Paraíba_tourmaline
gptkb:Paraiba |
| gptkbp:mined_in |
gptkb:Brazil
gptkb:Mozambique gptkb:Nigeria |
| gptkbp:namedAfter |
gptkb:Paraíba_state
|
| gptkbp:notable_for |
intense neon color
|
| gptkbp:price_per_carat |
among highest for tourmalines
|
| gptkbp:rarity |
rare
|
| gptkbp:synthetic_available |
rarely
|
| gptkbp:transparency |
transparent to translucent
|
| gptkbp:treatment |
heat treatment possible
|
| gptkbp:used_in |
gptkb:jewelry
|
| gptkbp:valuation |
very high
|
| gptkbp:bfsParent |
gptkb:Precious_Stone
|
| gptkbp:bfsLayer |
6
|