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  3. Jadeite

Polished stones - full range in stock "Jadeite"

Jadeite is a mineral from the pyroxene group with an entangled fibrous structure. Due to its structure, it has outstanding strength. Formed in metamorphic rocks. The quality is divided into three grades. The best variety, "imperial", is a transparent or translucent emerald-colored jadeite, which is very expensive. Low-quality jadeite, on the contrary, is inexpensive, but at the same time it has a high heat capacity and does not crack at high temperatures. Therefore, it is used in saunas for heaters.

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

Physical properties of Jadeite

General
Category Pyroxene group
Formula
(repeating unit)		 NaAlSi2O6 or Na(Al,Fe3+)Si2O6
IMA symbol Jd
Strunz classification 9.DA.25
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group C2/c
Identification
Color Apple-green, emerald-green, bluish green, leek-green, purplish blue, greenish white, white, black, may show green spots, rarely blue or violet; colorless in thin section. Often also banded.
Crystal habit Commonly massive, or fibrous, granular; prismatic crystals rare
Twinning Single and lamellar twinning on [100] and [001]
Cleavage Good on [110]
Fracture Splintery
Mohs scale hardness 6.5 - 7
Luster Subvitreous, pearly on cleavages
Streak White
Diaphaneity Translucent
Specific gravity 3.24 to 3.43
Polish luster vitreous to greasy
Optical properties Biaxial (+)
Refractive index nα = 1.654 - 1.673 nβ = 1.659 - 1.679 nγ = 1.667 - 1.693
Birefringence δ = 0.013 - 0.020
Dispersion r > v; moderate to strong.
Ultraviolet fluorescence Dark colors are generally inert. Light green – inert to weak white in long wave, generally inert in short wave; light yellow – inert to weak green in long wave, generally inert in short wave; white – inert to weak in long wave, generally inert in short wave; light purple – inert to weak white or weak brownish red in long wave, generally inert in short wave; some dyed lavender colors – moderate to strong orange in long wave, weaker in short wave

Jadeite 2nd and 3rd grade
Code: 193
Jadeite 2nd and 3rd grade
Borusskoye deposit. Sayanogorsk. Khakassia , RF
85*51*36mm

0.00 $ $40.00

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