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8 Killo Amazonite

SKU:amazonite-001

$650.00

Availability: In stock

Short Description

This lot is of green amazonite. The material is from Skardu region of Pakistan. The colour of the stone is very nice. The pieces are big in weight. The price is ...

Description

Details

 

Tourmaline Gemstone: What is it?

Stone Type/Family: A member of the Tourmaline family, Silicates class
Category: Silicate mineral group
Chemical formula: (Ca,K,Na,[])(Al,Fe,Li,Mg,Mn)3(Al,Cr, Fe,V)6(BO3)3(Si,Al,B)6O18(OH,F)4
Color: Most commonly black, but can range from brown, violet, green, pink, or in a dual-colored pink and green.
Crystal habit: Parallel and elongated. Acicular prisms, sometimes radiating. Massive. Scattered grains (in granite).
Crystal system: Trigonal
Cleavage: Indistinct
Fracture: Uneven, small conchoidal, brittle
Mohs scale hardness: 7–7.5
Luster: Vitreous, sometimes resinous
Streak: White
Specific gravity: 3.06 (+.20 -.06)
Density: 2.82–3.32
Polish luster: Vitreous
Optical properties: Double refractive, uniaxial negative
Refractive: index nù=1.635–1.675, nå=1.610–1.650
Birefringence: -0.018 to -0.040; typically about .020 but in dark stones it may reach .040
Pleochroism: typically moderate to strong

SHIPMENT POLICY :

Items are shipped as soon as possible but due to location / time zone, destination distance from Pakistan, a few extra time may be required to ship the packages. Retail orders will be done immediately within 1 or 2 days. 

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