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Fabulous Piece 0.50 Ct Natural Emerald From Swat Mined
- 存貨單位
- 尺寸(毫米)
- 5 x 5.2 x 4.2mm
- 重量 (cts)
- 0.5
- Treatment
- No Treatment
- Shape
- Emerald
- Type
- Faceted
- Clarity
- VS
- 顏色
-
Zambia is considered the world’s second most important source of emeralds by value (after Colombia). The deposits are located near the Kafubu River in the Ndola Rural Restricted Area. Emeralds have been known from this region since 1928, but significant commercial production began only in the 1970s. As of mid-2004, most of the emeralds were being mined from large open- pit operations at the Kagem, Grizzly, and Chantete concessions. Economic emerald mineralization is confined almost entirely to phlogopite reaction zones adjacent to Be-bearing quartz-tourmaline veins that metasomatically altered Cr-bearing metabasite host rocks. Nearly all of the rough is cut in India and Israel. Zambian emeralds have relatively high R.I. and S.G. values, with inclusions typ- ically consisting of partially healed fissures, as well as actinolite, phlogopite, dravite, fluorapatite, magnetite, and hematite. They contain moderate amounts of Cr, Mg, and Na, moderate-to-high Fe contents, and relatively high Cs and Li. Although many features of Zambian emeralds are compara- ble to those from other commercially important localities, in many cases they may be separated by a combination of their physical properties, microscopic characteristics, and chemical composition.
| 提供者 | 目的地 | 成本 |
|---|---|---|
| Standard Shipping - Tracked 默認 |
世界其他地區
:幾天天
|
第一項
每增加一件
運費上限為
|
| FedEx |
世界其他地區
:幾天天
|
第一項
每增加一件
運費上限為
|
| Standard Shipping - Tracked 默認 |
巴基斯坦
:幾天天
|
第一項
每增加一件
運費上限為
|
| FedEx |
巴基斯坦
:幾天天
|
第一項
每增加一件
運費上限為
|
- 存貨單位
- 尺寸(毫米)
- 5 x 5.2 x 4.2 mm
- 重量 (cts)
- 0.5
- Treatment
- No Treatment
- Shape
- Emerald
- Type
- Faceted
- Clarity
- VS
- 顏色
-
Zambia is considered the world’s second most important source of emeralds by value (after Colombia). The deposits are located near the Kafubu River in the Ndola Rural Restricted Area. Emeralds have been known from this region since 1928, but significant commercial production began only in the 1970s. As of mid-2004, most of the emeralds were being mined from large open- pit operations at the Kagem, Grizzly, and Chantete concessions. Economic emerald mineralization is confined almost entirely to phlogopite reaction zones adjacent to Be-bearing quartz-tourmaline veins that metasomatically altered Cr-bearing metabasite host rocks. Nearly all of the rough is cut in India and Israel. Zambian emeralds have relatively high R.I. and S.G. values, with inclusions typ- ically consisting of partially healed fissures, as well as actinolite, phlogopite, dravite, fluorapatite, magnetite, and hematite. They contain moderate amounts of Cr, Mg, and Na, moderate-to-high Fe contents, and relatively high Cs and Li. Although many features of Zambian emeralds are compara- ble to those from other commercially important localities, in many cases they may be separated by a combination of their physical properties, microscopic characteristics, and chemical composition.
| 提供者 | 目的地 | 成本 |
|---|---|---|
| Standard Shipping - Tracked 默認 |
世界其他地區
:幾天天
|
第一項
每增加一件
運費上限為
|
| FedEx |
世界其他地區
:幾天天
|
第一項
每增加一件
運費上限為
|
| Standard Shipping - Tracked 默認 |
巴基斯坦
:幾天天
|
第一項
每增加一件
運費上限為
|
| FedEx |
巴基斯坦
:幾天天
|
第一項
每增加一件
運費上限為
|
We deal in all kind of gemstones (Precious & Semi Precious) and also Rare gemstones.
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積極的Very bright gem
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積極的Beautiful Stone. Arrived as described.
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積極的Great stone!
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積極的Fast delivery, stone as pictured. Good seller, will buy again!