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Tourmaline

Item Number: TUR-PIN-2019-17

€1.300,00

incl. VAT

In stock

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Details

Price:

1.300,00 €

Weight:

5,463 ct.

Color:

pink

Shape:

Cushion

Dimensions:

11,41 mm x 8,37 mm x 7,34 mm

Color Quality:

good (IV)

Purity:

very small inclusions (C)

Origin:

Unknown origin

Treatment:

not detectable

Certificate:

GLA49669

Item Number:

TUR-PIN-2019-17

facts

properties of tourmaline

Separate mineralogical group with many varieties
Hardness grade 7 – 7,5
Chemical formula: XY3Z6(T6O18)(BO3)3V3W(V, W, X, Y, Z stand for different possible elements)
Includes all colors
Colored by different metal oxides
Specific gravity 2.8 – 3.3 g/cm3

origin

Brasilia
Madagascar
Pakistan
Various locations in Europe
Mozambique
Namibia
Nigeria

worth knowing

Oldest known locality in modern trade: Brazil
Occurs in all colors
Forms beautiful crystals with very good crystal endings
Various esoteric and healing meanings
Also large crystals and large cut stones possible
The locality Pakistan was discovered only around 2010

investment in tourmaline

Still undervalued compared to other gemstones.
Exception: the Paraiba tourmaline, which can be more expensive than sapphire
Stones should be at least 5 ct in weight, except for Paraiba
Larger stones have higher appreciation
Experts calculate 6 – 8% increase in value per year
Beautiful, pure stones with clear colors are preferable