Tourmaline

Name: Tourmaline
SKU: TUR-PINORA-2021-165
Price: 1200.00 EUR
Availability: InStock

Item Number: TUR-PINORA-2021-165

€1.200,00

incl. VAT

In stock

This gem is currently reserved for a customer

Price:

1.200,00 €

Weight:

3,909 ct.

Color:

orange-pink

Shape:

Cushion

Dimensions:

9,24 mm x 9,16 mm x 7,32 mm

Color Quality:

good (IV)

Purity:

smallest inclusions (B)

Origin:

Unknown origin

Treatment:

not detectable

Certificate:

GLA53125

Item Number:

TUR-PINORA-2021-165

facts

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

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