Non hai fatto offerte per questa asta.
Beautiful piece 1.45 Ct Natural Emerald From Swat Mined
- SKU
- Dimensioni (mm)
- 8.000 x 5.200 x 4.480mm
- Peso (cts)
- 1.450
- Treatment
- No Treatment
- Shape
- Emerald
- Tipo
- Faceted
- Clarity
- SI
- Colori
-
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.
- SKU
- Dimensioni (mm)
- 8.000 x 5.200 x 4.480 mm
- Peso (cts)
- 1.450
- Treatment
- No Treatment
- Shape
- Emerald
- Tipo
- Faceted
- Clarity
- SI
- Colori
-
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.
Fornitore di spedizioni | Spedizione in :paese | Spedizione nel resto del mondo |
---|---|---|
Standard Shipping - Tracked | $8.00 / : giorni giorni | $15.00 / : giorni giorni |
:Paese
Standard Shipping - Tracked è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
Standard Shipping - Tracked è scontato a :prezzo per ordini con :quantità o più articoli
|
||
FedEx | $35.00 / : giorni giorni | $35.00 / : giorni giorni |
:Paese
FedEx è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
FedEx è scontato a :prezzo per ordini con :quantità o più articoli
|
-
Negativo
Seller has used strong filter on the seller image. What I have received is not as vivid red as seller images shown. Very disappointed. Wont consider this seller anymore.
-
Positivo
Beautiful
Prenotazione non soddisfatta
Perché gli utenti superano se stessi?
Quando viene effettuata un'offerta, questo è l'importo massimo che un utente è disposto a offrire per il prodotto. Il nostro sistema farà quindi automaticamente un'offerta per conto di quegli utenti, aumentando in modo incrementale l'offerta per mantenere la loro posizione di miglior offerente, fino al massimo specificato.
Quando è presente un'icona che indica "Offerta automatica", significa che il nostro sistema sta attivamente facendo offerte per l'utente in base alla sua offerta massima. Potrebbe sembrare che gli utenti stiano superando l'offerta, ma è semplicemente il risultato dell'aggiornamento dell'offerta da parte del sistema in modo da riflettere il limite massimo degli utenti.