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Copper Bearing Tourmaline 5.43 ct Mozambique SKU.17
- 存货单位
- 尺寸(毫米)
- 12.350 x 8.920 x 7.180mm
- 重量 (cts)
- 5.430
- Treatment
- No Treatment
- 颜色
-
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
- 存货单位
- 尺寸(毫米)
- 12.350 x 8.920 x 7.180 mm
- 重量 (cts)
- 5.430
- Treatment
- No Treatment
- 颜色
-
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
运输商 | 运送至:国家 | 运送到世界其他地区 |
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FedEx | $35.00 / :几天天 | $35.00 / :几天天 |
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FedEx 对包含 2 或更多商品的订单折扣为 $35.00
世界其他地区
FedEx 对包含 2 或更多商品的订单折扣为 $35.00
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Express Shipping | $55.00 / :几天天 | $55.00 / :几天天 |
:国家
Express Shipping 对包含 2 或更多商品的订单折扣为 $55.00
世界其他地区
Express Shipping 对包含 2 或更多商品的订单折扣为 $55.00
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Registered Shipping | $10.00 / :几天天 | $10.00 / :几天天 |
:国家
Registered Shipping 对包含 2 或更多商品的订单折扣为 $10.00
世界其他地区
Registered Shipping 对包含 2 或更多商品的订单折扣为 $10.00
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积极的
Great to do business with. Beautiful stone.
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