$2,300.00 AUD
RRP stimato $7,000.00
3509
0

3100 CTS AUSTRLIAN EMERALD QUALITY SPECIMEN TBM-2328

SKU
Dimensioni (mm)
110.000 x 86.000 x 66.000mm
Peso (cts)
3100.000
Colori

AUSTRALIAN EMERALD

Curlew Emerald Mine, Shaw River District, East Pilbara Shire, Western Australia, Australia

STUNNING SPECIMEN

TREATMENT -NONE

COLLECTOR PC

 GREEN-CRYSTAL

HAS PURPLE FLOURITE INCLUSION

ON HOST ROCK

Specimens can consist Light green beryl crystals to green beryl coloration, with minor dark biotite specks mica ,schist and purple fluorite inclusions.

The dark mica schists within the quartz veins and pegmatites contain gem quality emerald crystals and green beryl. As is typical of Western Australian emerald


Curlew Emerald Mine, Shaw River District, East Pilbara Shire, Western Australia, Australia


Nearly all production of emerald in Western Australia has been from a deposit at Poona but there are beryl and emerald deposits at Menzies and in the Pilbara region, south of Port Hedland.

Australian emeralds

Emeralds have been commercially mined in Australia in three main deposits Poona and Menzies in Western Australia, and Emmaville in New South Wales. The emeralds are usually in rocks among layers of other minerals such as mica. Open pit mining or terrace mining are the most common methods.
discovered in Western Australia in 1912 at Poona, 500 km north-east of Perth. The main mine of the district was the Aga Khan which operated on and off for more than 70 years until 1980 and yielded an estimated 10,000 grams of mostly low value emerald. During the1980s another mine in WA was worked some 40kms west of Menzies.
In Australia, emerald is associated with granite pegmatites and metamorphosed rocks called schists. It is also sometimes associated with altered limestones or can be found embedded in calcite or quartz. A pegmatite forms when a magma cools, leaving some elements behind in the remaining fluid. Emerald crystals may grow when the remaining solution cools as long as the necessary elements are present, including beryllium. Emeralds can also form in veins in the crust from hot liquids that escape from a deeper magma.

Processing

Screens are used to sort the emeralds by size and then silt and clays are washed away to expose the emerald-bearing schist. No other chemicals are used in this process. Any schist or other rock still attached to the emerald is removed manually in a process called cobbing. Higher quality materials can be cleaned using high-pressure air.

Mining

Emeralds have been commercially mined in Australia in three main deposits Poona and Menzies in Western Australia, and Emmaville in New South Wales. The emeralds are usually in rocks among layers of other minerals such as mica. Open pit mining or terrace mining are the most common methods. Miners dig a pit with shovels, excavators or other earth moving equipment, depending on the scale of the mine. If the emerald-bearing ore is beneath a substantial cover of soil and rock, explosives might be used to remove this material. Sometimes high pressure water is used to blast the rock to reveal mineral bearing rocks. Tunnels are also used to extract emeralds from deeper rock layers.



Beryl Be3Al2(Si6O18) , Biotite K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 , Quartz SiO2


Fornitore di spedizioni Spedizione in :paese Spedizione nel resto del mondo
Standard Shipping - Tracked $17.00 / : giorni giorni $30.00 / : 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

rarejewelry
rarejewelry
best price offered-purchased direct from source
:città, :paese
Verificato
: Feedback totale

  • matsararead
    matsararead
    Positivo

    Paid and shipped - no feedback left after 100 days

  • sinsarahty
    sinsarahty
    Positivo

    Paid and shipped - no feedback left after 100 days

  • guest341632
    guest341632
    Positivo

    Paid and shipped - no feedback left after 100 days

  • guest341632
    guest341632
    Positivo

    Paid and shipped - no feedback left after 100 days

  • aaaaaaaaaa
    aaaaaaaaaa
    Positivo

    Paid and shipped - no feedback left after 100 days

30%
Codice coupon thanksgiving
Valido fino a
30th Nov 2024

Verifica

Il programma Treasure Sheriff consente ai nostri membri di richiedere un audit su qualsiasi prodotto, che è completato da una :qualificazione indipendente che valuta l'accuratezza della descrizione e delle immagini dell'articolo.

Dettagli di spedizione

Spedizione:
$30.00 :conta i giorni tramite Standard Shipping - Tracked
Spedizioni da:
Australia

Opzioni di pagamento

  • stripe
  • gempay
Questo venditore aggiunge 10.00% tax alle transazioni in Australia.

Panoramica

Tipo di elenco : Standard
Codice prodotto : 26730
Inizia : 7th November 2024 01:35 pm AEST
* Tutti i prezzi sono in :valuta