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18 CTS GREEN OPAL ROUGH TANZANIA DT-3142-DREAMTIMEOPALS
- SKU
- DT-3142
- Dimensions (mm)
- 25.7 x 19.9 x 10.4mm
- Weight (cts)
- 18
- Type
- Rough
- Colours
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PRASE GREEN OPAL
rough
This is a natural parcel of untreated rough pieces of green opals I purchased on my last trip to Tanzania.Production is very limited of this material. These opals have not been touched in any way. And this is how it comes out of the mines.
This material can be cabochon,faceted or made into carvings.
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.
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- SKU
- DT-3142
- Dimensions (mm)
- 25.7 x 19.9 x 10.4 mm
- Weight (cts)
- 18
- Type
- Rough
- Colours
-
PRASE GREEN OPAL
rough
This is a natural parcel of untreated rough pieces of green opals I purchased on my last trip to Tanzania.Production is very limited of this material. These opals have not been touched in any way. And this is how it comes out of the mines.
This material can be cabochon,faceted or made into carvings.
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.
| Shipping provider | Shipping to Australia | Shipping to rest of world | Combined Shipping (Australia) | Combined Shipping (rest of the world) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
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|
|
| FedEx |
|
|
|
|
| DHL |
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sally Patel and natassa Patel have been in business for 35 years trueblueopal us family owned com....
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PositivePaid and shipped - no feedback left after 100 days
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Positive
My first opal, I'm delighted with it. Perhaps the start of a future collection ^^ Thank you very much for this find.
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Positive
This is the most beautiful opal I have ever seen. I am absolutely in love with this stone. The seller is extremely professional, and helpful a true pleasure to deal with. I bought this opal as a birthday gift, and I know it will be an unforgettable
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Positive
I can't begin to tell you how many times I've been stopped so someone can check out this specimen. Amazing find.
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Positive
HIGHLY RECOMMEND THESE SELLERS! Purchased !2/02/2025 --> Delivered 12/08/2025 to Rochester, NY! FAST Shipping! Hefty Parcel exactly as described- looking forward to working these roughs! Thank you SO much Sally & Natassa! Looking forward to more!
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Positive
HIGHLY RECOMMEND THESE SELLERS! Purchased !2/02/2025 --> Delivered 12/08/2025 to Rochester, NY! FAST Shipping! Incredibly beautiful rub exactly as described- will cut a HQ gem! Thank you SO much Sally & Natassa! Looking forward to more!
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