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Copper Bearing Tourmaline 1.93 ct Mozambique SKU.17
- SKU
- Dimensions (mm)
- 8.180 x 7.270 x 4.580mm
- Weight (cts)
- 1.930
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Please settle your Invoice within 24 hrs or let us know to hold it for you if you would like to combine shipping. After 24 hrs the winnings are subject to Cancel.
Copper-bearing tourmaline from Mozambique was first recovered in 2001, but its Cu content was not recognized until 2003, and it was not widely sold with its Mozambique origin disclosed until 2005. It has been mined from alluvial deposits in an approximately 3 km2 area near Mavuco in the eastern portion of the Alto Ligonha pegmatite district. Most of the production has come from artisanal mining, with hand tools used to remove up to 5 m of overburden to reach the tourmalinebearing layer. The stones exhibit a wide range of colors, typically pink to purple, violet to blue, and blue to green or yellowish green. Heat treatment of all but the green to yellowish green stones typically produces Paraíba-like blue-to-green hues by reducing absorption at ~520 nm caused by the presence of Mn3+. The gemological properties are typical for Cu-bearing tourmaline (including material from Brazil and Nigeria); the most common inclusions consist of partially healed fractures and elongate hollow tubes. With the exception of some green to yellow-green stones, the tourmalines examined have relatively low Cu contents and very low amounts of Fe and Ti. Mechanized mining is expected to increase production from this region in the near future.
- Treatment None
Feel free to to “make an offer” on our other items :)
We Accept Payments through
- Paypal
- Direct Deposit
- Credit Cards
- SKU
- Dimensions (mm)
- 8.180 x 7.270 x 4.580 mm
- Weight (cts)
- 1.930
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Please settle your Invoice within 24 hrs or let us know to hold it for you if you would like to combine shipping. After 24 hrs the winnings are subject to Cancel.
Copper-bearing tourmaline from Mozambique was first recovered in 2001, but its Cu content was not recognized until 2003, and it was not widely sold with its Mozambique origin disclosed until 2005. It has been mined from alluvial deposits in an approximately 3 km2 area near Mavuco in the eastern portion of the Alto Ligonha pegmatite district. Most of the production has come from artisanal mining, with hand tools used to remove up to 5 m of overburden to reach the tourmalinebearing layer. The stones exhibit a wide range of colors, typically pink to purple, violet to blue, and blue to green or yellowish green. Heat treatment of all but the green to yellowish green stones typically produces Paraíba-like blue-to-green hues by reducing absorption at ~520 nm caused by the presence of Mn3+. The gemological properties are typical for Cu-bearing tourmaline (including material from Brazil and Nigeria); the most common inclusions consist of partially healed fractures and elongate hollow tubes. With the exception of some green to yellow-green stones, the tourmalines examined have relatively low Cu contents and very low amounts of Fe and Ti. Mechanized mining is expected to increase production from this region in the near future.
- Treatment None
Feel free to to “make an offer” on our other items :)
We Accept Payments through
- Paypal
- Direct Deposit
- Credit Cards
Shipping provider | Shipping to Thailand | Shipping to rest of world |
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FedEx | $35.00 / 2 days | $35.00 / 5 days |
Thailand
FedEx is discounted to $35.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $35.00 on orders with 2 or more items
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Express Shipping | $55.00 / 2 days | $55.00 / 5 days |
Thailand
Express Shipping is discounted to $55.00 on orders with 2 or more items
Rest of the world
Express Shipping is discounted to $55.00 on orders with 2 or more items
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||
Registered Shipping | $10.00 / 7 days | $10.00 / 21 days |
Thailand
Registered Shipping is discounted to $10.00 on orders with 2 or more items
Rest of the world
Registered Shipping is discounted to $10.00 on orders with 2 or more items
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Positive
Absolutely beautiful
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Positive
great stone
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Positive
I received the stone safely. Thank you for always making beautiful stones available for purchase.
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