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28/11/2023 11:53 am

Zambia Mined 1.10 Natural Green Emerald

475 views
0 guardando
Dettagli
SKU
Dimensioni (mm)
7.1 x 5.6 x 3.7mm
Peso (cts)
1.1
Clarity
I
Type
Faceted
Colori
Descrizione

Emerald :


Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium and sometimes vanadium.[2] Beryl has a hardness of 7.5–8 on the Mohs scale.[2] Most emeralds are highly included,[3] so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate.

Clarity :

Emeralds tend to have numerous inclusions and surface-breaking fissures. Unlike diamonds, where the loupe standard, i.e. 10× magnification, is used to grade clarity, emeralds are graded by eye. Thus, if an emerald has no visible inclusions to the eye (assuming normal visual acuity) it is considered flawless. Stones that lack surface breaking fissures are extremely rare and therefore almost all emeralds are treated ("oiled", see below) to enhance the apparent clarity. The inclusions and fissures within an emerald are sometime described as jardin (French for garden), because of their mossy appearance.[9] Imperfections are unique for each emerald and can be used to identify a particular stone. Eye-clean stones of a vivid primary green hue (as described above), with no more than 15% of any secondary hue or combination (either blue or yellow) of a medium-dark tone, command the highest prices.[5] The relative non-uniformity motivates the cutting of emeralds in cabochon form, rather than faceted shapes. Faceted emeralds are most commonly given an oval cut, or the signature emerald cut, a rectangular cut with facets around the top edge.

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Treatment None

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Spedizione
Fornitore di spedizioni Spedizione a Thailandia Spedizione nel resto del mondo Spedizione combinata ( Thailandia ) Spedizione combinata (resto del mondo)
Standard Shipping - Tracked
/ 7 giorni
/ 21 giorni
su ordini con 2 di articoli o più
su ordini con 2 di articoli o più
DHL
/ 4 giorni
/ 7 giorni
su ordini con 2 di articoli o più
su ordini con 2 di articoli o più

Verifica

Il programma Gemstone Sheriff consente ai nostri membri di richiedere un controllo su qualsiasi prodotto, che viene completato da un Gemologist indipendente che valuta l'accuratezza della descrizione e delle immagini dell'articolo.

Dettagli di spedizione

Costi:
Transito:
7 giorni tramite DHL
Spedizioni da:
Thailandia

Opzioni di pagamento

  • paypal

Panoramica

Tipo di elenco : Standard
Codice prodotto : 2284281
Inizia : 26th November 2023 01:12 pm PST
* Tutti i prezzi sono in USD

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