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7.85 CTS PRASE OPAL -CABACHONED -DENTRITIC [VS5764]
- SKU
- Afmetingen (mm)
- 20.000 x 14.000 x 5.000mm
- Gewicht (cts)
- 8.000
- Type
- Cabochon
- Kleuren
-
PRASE GREEN OPAL
This is a natural untreated polished green opal i purchased on my last trip to Tanzania.Production is very limited of this material.This stone is showing some dendritic inclusions
Weight 7.85 cts app
Size 20 x 14 x 5 mm app
Prase opal is a nickel-bearing variety of common opal, with nickel being the chromophore that illuminates the neon bluish-green hue. Chrysoprase and prase opal can be similar in appearance but can easily by separated by varying RI and SG. Both varieties range from low-quality opaque material to high-quality translucent jewels; however, the prase opal tends to be more translucent and gemmy.
Chrysoprase and prase opal have been mined on Iyobo Mountain in central Tanzania for more than 20 years, with the first accounts being described by Gübelin in 1975. The most recent discovery revealed some of the most intense and beautiful bluish green material to be seen by the gem trade. The majority of the production is in the chrysoprase form, while the prase opal is the more rare find from this deposit. Chrysoprase and prase opal both form in discontinuous veins within metamorphosed ultramafic rocks with the most dominant host rock being altered serpentine.
- SKU
- Afmetingen (mm)
- 20.000 x 14.000 x 5.000 mm
- Gewicht (cts)
- 8.000
- Type
- Cabochon
- Kleuren
-
PRASE GREEN OPAL
This is a natural untreated polished green opal i purchased on my last trip to Tanzania.Production is very limited of this material.This stone is showing some dendritic inclusions
Weight 7.85 cts app
Size 20 x 14 x 5 mm app
Prase opal is a nickel-bearing variety of common opal, with nickel being the chromophore that illuminates the neon bluish-green hue. Chrysoprase and prase opal can be similar in appearance but can easily by separated by varying RI and SG. Both varieties range from low-quality opaque material to high-quality translucent jewels; however, the prase opal tends to be more translucent and gemmy.
Chrysoprase and prase opal have been mined on Iyobo Mountain in central Tanzania for more than 20 years, with the first accounts being described by Gübelin in 1975. The most recent discovery revealed some of the most intense and beautiful bluish green material to be seen by the gem trade. The majority of the production is in the chrysoprase form, while the prase opal is the more rare find from this deposit. Chrysoprase and prase opal both form in discontinuous veins within metamorphosed ultramafic rocks with the most dominant host rock being altered serpentine.
Verzend provider | Verzending naar:land | Verzending naar de rest van de wereld |
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FedEx | $12.00 / :dagen dagen | $39.00 / :dagen dagen |
:land
FedEx wordt verdisconteerd tot $12.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
FedEx wordt verdisconteerd tot $39.00 bij bestellingen met 2 of meer artikelen
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||
Registered Shipping | $9.00 / :dagen dagen | $16.00 / :dagen dagen |
:land
Registered Shipping wordt verdisconteerd tot $9.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
Registered Shipping wordt verdisconteerd tot $16.00 bij bestellingen met 2 of meer artikelen
|
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Positief
Excellent stone. As pictured. Fast shipping
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Positief
Excellent thank you
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Positief
Paid and shipped - no feedback left after 100 days
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Positief
Beautiful Color!!
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Positief
Thank you for the nice stone!
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Positief
Thank you for the nice stones!
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