Nice Natural Jadeite Rough Stone Slab 52.4 gram 70x62x6 mm piece

Description

Jadeite rough stone from Asia.  -- All natural, untreated slate
Selltotheworld
From all around the world
Nice Natural Jadeite Rough Stone Slab 52.4 gram 70x62x6 mm piece
Jadeite
rough stone from Asia.
-- All natural, untreated slate
Weight: 52.4 gram (262 carat)
Dimension: 70x62x6 mm
***
Jadeite
Jadeite
is a
pyroxene
mineral with composition
Na
Al
Si
2
O
6. It is
monoclinic
. It has a
Mohs hardness
of about 6.5 to 7.0 depending on the composition. The mineral is dense, with a specific gravity of about 3.4. Jadeite forms solid solutions with other pyroxene
endmembers
such as
augite
and
diopside
(CaMg-rich endmembers),
aegirine
(NaFe endmember), and
kosmochlor
(NaCr endmember). Pyroxenes rich in both the jadeite and augite endmembers are known as
omphacite
.
Jadeite is formed in
metamorphic rocks
under high pressure and relatively low temperature conditions.
Albite
(NaAlSi3O8) is a common mineral of the Earth's crust, and it has a specific gravity of about 2.6, much less than that of jadeite. With increasing pressure, albite breaks down to form the high-pressure assemblage of jadeite plus
quartz
. Minerals associated with jadeite include:
glaucophane
,
lawsonite
,
muscovite
,
aragonite
,
serpentine
and
quartz
.
Rocks that consist almost entirely of jadeite are called
jadeitite
. In all well-documented occurrences, jadeitite appears to have formed from
subduction zone
fluids in association with
serpentinite
. Jadeitite is resistant to weathering, and boulders of jadeitite released from the serpentine-rich environments in which they formed are found in a variety of environments.
Jadeite's color commonly ranges from white through pale apple green to deep
jade
green
but can also be blue-green (like the recently rediscovered "Olmec Blue" jade), pink, lavender and a multitude of other rare colors.
Chloromelanite
is a very dark green to black variety. Color is largely affected by the presence of trace elements such as chromium and iron. Its translucence can be anywhere from entirely solid through opaque to almost clear. Variations in color and translucence are often found even within a single specimen. Jadeite is reported from
California, USA
;
Myanmar
;
New Zealand
;
Guatemala
;
Itoigawa, Japan
; other localities of jadeite include
Kazakhstan
;
Russia
;
British Columbia, Canada
;
Italy
and
Turkestan
.
Item Specifics
Variety/Type :
Green
Shape :
Rough
Brand :
Unbranded
Length :
70
Width :
62
Depth :
6
Total Carat Weight (TCW) :
262
Treatment :
None (No Enhancement)
Transparency :
Opaque
Cut Grade :
Good
Country of Origin :
Asia
Country/Region of Manufacture :
China
Natural/Lab-Created :
Natural
Modified Item :
No
Payment
By Paypal
Shipping
Free shipping cost.
We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery.
We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery.
Returns
Returns: We accept returns with any reason in 30 days.
Contact Us
We will answer buyer messages within 24 hours during working days.
Selltotheworld
From all around the world
DESCRIPTION
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Nice Natural Jadeite Rough Stone Slab 52.4 gram 70x62x6 mm piece
Jadeite
rough stone from Asia.
-- All natural, untreated slate
Weight: 52.4 gram (262 carat)
Dimension: 70x62x6 mm
***
Jadeite
Jadeite
is a
pyroxene
mineral with composition
Na
Al
Si
2
O
6. It is
monoclinic
. It has a
Mohs hardness
of about 6.5 to 7.0 depending on the composition. The mineral is dense, with a specific gravity of about 3.4. Jadeite forms solid solutions with other pyroxene
endmembers
such as
augite
and
diopside
(CaMg-rich endmembers),
aegirine
(NaFe endmember), and
kosmochlor
(NaCr endmember). Pyroxenes rich in both the jadeite and augite endmembers are known as
omphacite
.
Jadeite is formed in
metamorphic rocks
under high pressure and relatively low temperature conditions.
Albite
(NaAlSi3O8) is a common mineral of the Earth's crust, and it has a specific gravity of about 2.6, much less than that of jadeite. With increasing pressure, albite breaks down to form the high-pressure assemblage of jadeite plus
quartz
. Minerals associated with jadeite include:
glaucophane
,
lawsonite
,
muscovite
,
aragonite
,
serpentine
and
quartz
.
Rocks that consist almost entirely of jadeite are called
jadeitite
. In all well-documented occurrences, jadeitite appears to have formed from
subduction zone
fluids in association with
serpentinite
. Jadeitite is resistant to weathering, and boulders of jadeitite released from the serpentine-rich environments in which they formed are found in a variety of environments.
Jadeite's color commonly ranges from white through pale apple green to deep
jade
green
but can also be blue-green (like the recently rediscovered "Olmec Blue" jade), pink, lavender and a multitude of other rare colors.
Chloromelanite
is a very dark green to black variety. Color is largely affected by the presence of trace elements such as chromium and iron. Its translucence can be anywhere from entirely solid through opaque to almost clear. Variations in color and translucence are often found even within a single specimen. Jadeite is reported from
California, USA
;
Myanmar
;
New Zealand
;
Guatemala
;
Itoigawa, Japan
; other localities of jadeite include
Kazakhstan
;
Russia
;
British Columbia, Canada
;
Italy
and
Turkestan
.
Item Specifics
Variety/Type :
Green
Shape :
Rough
Brand :
Unbranded
Length :
70
Width :
62
Depth :
6
Total Carat Weight (TCW) :
262
Treatment :
None (No Enhancement)
Transparency :
Opaque
Cut Grade :
Good
Country of Origin :
Asia
Country/Region of Manufacture :
China
Natural/Lab-Created :
Natural
Modified Item :
No
Payment
By Paypal
Shipping
Free shipping cost.
We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery.
We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery.
Returns
Returns: We accept returns with any reason in 30 days.
Contact Us
We will answer buyer messages within 24 hours during working days.
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