Well Polished Carnelian Stone Specimen 52.7 gram 61x28x21 mm

Description

Well polished Natural Carnelian Stone specimen
Weight: 52.7 gram
Sizes:  61x28x21 mm
This stone is from Brazil.
***
Carnelian
Category  Chalcedony variety
Chemical formula  Silica (silicon dioxide, SiO2)
Molar mass  60 g / mol
Color  Brownish-red
Crystal system  Trigonal
Cleavage  Absent
Fracture  Uneven, splintery, conchoidal
Mohs scale  hardness 6 - 7
Luster  Vitreous, dull, greasy, silky
Streak  White
Diaphaneity  Translucent
Specific gravity  2.59 - 2.61
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Well Polished Carnelian Stone Specimen 52.7 gram 61x28x21 mm
Well polished Natural
Carnelian
Stone specimen
Weight: 52.7 gram
Sizes:  61x28x21
mm
This stone is from Brazil.
***
Carnelian
Category  Chalcedony variety
Chemical formula  Silica (silicon dioxide, SiO2)
Molar mass  60 g / mol
Color  Brownish-red
Crystal system  Trigonal
Cleavage  Absent
Fracture  Uneven, splintery, conchoidal
Mohs scale  hardness 6 - 7
Luster  Vitreous, dull, greasy, silky
Streak  White
Diaphaneity  Translucent
Specific gravity  2.59 - 2.61
C
arnelian
,
also called cornelian,  a translucent, brownish-red, semiprecious variety of the silica mineral chalcedony that owes its red to reddish brown colour to colloidally dispersed hematite (iron oxide). It is a close relative of sard, differing only in the shade of red. Carnelian was highly valued and used in rings and signets by the Greeks and Romans, some of whose intaglios have retained their high polish better than many harder stones. Carnelian’s colour is enhanced by baking and dyeing with iron salts. Chief localities are Ratnapura, India; Campo de Maia, Braz.; and Warwick, Queens., Austl. Its physical properties are those of quartz.
Stones may be uniformly colored or faintly banded. The best carnelian is from India, where it is placed in the sun to change from brown to tints to red. Most carnelian on the market is stained chalcedony from Brazil or Uruguay.
Item Specifics
Total Carat Weight (TCW)
263.5
Modified Item
No
Country/Region of Manufacture
China
Transparency
Opaque
Natural/Lab-Created
Natural
Country of Origin
Brazil
Cut Grade
Good
Brand
Unbranded
Length
61
Width
28
Depth
21
Payment
Payment: By Paypal
Shipping cost
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.
Return policy
Returns: We accept returns with any reason in 30 days. Buyer will bear the return shipping cost.
Messages
We will answer messages in 24 hours during working days.
[ Policy
: This is the contents of your policies. You can add a banner for this policy as header and add text descriptions here. The text descriptions can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ]
Allaboutlearning
Your best online business partner
Well Polished Carnelian Stone Specimen 52.7 gram 61x28x21 mm
Well polished Natural
Carnelian
Stone specimen
Weight: 52.7 gram
Sizes:  61x28x21
mm
This stone is from Brazil.
***
Carnelian
Category  Chalcedony variety
Chemical formula  Silica (silicon dioxide, SiO2)
Molar mass  60 g / mol
Color  Brownish-red
Crystal system  Trigonal
Cleavage  Absent
Fracture  Uneven, splintery, conchoidal
Mohs scale  hardness 6 - 7
Luster  Vitreous, dull, greasy, silky
Streak  White
Diaphaneity  Translucent
Specific gravity  2.59 - 2.61
C
arnelian
,
also called cornelian,  a translucent, brownish-red, semiprecious variety of the silica mineral chalcedony that owes its red to reddish brown colour to colloidally dispersed hematite (iron oxide). It is a close relative of sard, differing only in the shade of red. Carnelian was highly valued and used in rings and signets by the Greeks and Romans, some of whose intaglios have retained their high polish better than many harder stones. Carnelian’s colour is enhanced by baking and dyeing with iron salts. Chief localities are Ratnapura, India; Campo de Maia, Braz.; and Warwick, Queens., Austl. Its physical properties are those of quartz.
Stones may be uniformly colored or faintly banded. The best carnelian is from India, where it is placed in the sun to change from brown to tints to red. Most carnelian on the market is stained chalcedony from Brazil or Uruguay.
Item Specifics
Total Carat Weight (TCW) :
263.5
Modified Item :
No
Country/Region of Manufacture :
China
Transparency :
Opaque
Natural/Lab-Created :
Natural
Country of Origin :
Brazil
Cut Grade :
Good
Brand :
Unbranded
Length :
61
Width :
28
Depth :
21
Payment
Payment: By Paypal
Shipping cost
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.
Return policy
Returns: We accept returns with any reason in 30 days. Buyer will bear the return shipping cost.
Messages
We will answer messages in 24 hours during working days.
[ Policy
: This is the contents of your policies. You can add a banner for this policy as header and add text descriptions here. The text descriptions can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ]
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