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Diameter, mm (1mm - 0,039inch)

Almandine mineral - You can buy these samples

Almandine - is a mineral, ferruginous and the most common variety of garnet. Has a reddish color. High-quality jewelry almandines can be confused with ruby or noble spinel. So, the main upper stone of the large imperial crown is the Russian almandine from the Kitelsky manifestation, Karelia.

You can see almandine stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Almandine

General
Category Nesosilicate
Formula
(repeating unit)
Fe2+3Al2Si3O12
IMA symbol Alm
Strunz classification 9.AD.25
Crystal system Cubic
Crystal class Hexoctahedral (m3m)
H-M symbol: (4/m 3 2/m)
Space group Ia3d
Identification
Color reddish orange to red, slightly purplish red to reddish purple and usually dark in tone
Cleavage none
Fracture conchoidal
Mohs scale hardness 7 - 7.5
Luster greasy to vitreous
Streak white
Specific gravity 4.05 (+.25, -.12)
Polish luster vitreous to subadamantine
Optical properties Single refractive, and often anomalous double refractive
Refractive index 1.790 (+/- .030)
Birefringence none
Pleochroism none
Dispersion .024
Ultraviolet fluorescence inert
Absorption spectra usually at 504, 520, and 573nm, may also have faint lines at 423, 460, 610 and 680-690nm
Code: 3604
Hit Island, Karelia, RF
52mm

0.00 $ $141.82

Code: 3570
Karelia, RF
37mm

0.00 $ $70.91

Code: 3425
Shueretskoe, Karelia, RF
61mm

0.00 $ $216.36

Code: 3265
Kitelya, Karelia, RF
41*23*16mm

0.00 $ $10.91

Code: 2810
Makzabak, Keivy, Kola Peninsula, RF
74*67*64mm

0.00 $ $121.82

Code: 2223
Dyadina Gora, Tedino, Karelia, RF
47mm

0.00 $ $87.27

Code: 1252
Makzabak deposit, Western Keivy, Kola Peninsula, RF
78mm

0.00 $ $325.09

Code: 1472
Makzabak, Keivy, Kola Peninsula, RF
43*32*27mm

0.00 $ $17.45

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