48.90 CTS AMETRINE ROUGH PARCEL-PRE SHAPED-BOLIVIAN [F7577]

Informazioni sull'articolo

Dimensioni (mm) 14 x 12 x 9mm
Peso (carati) 48.9 carati
Colori
In lavorazione...

QUALITY ROUGH

AMETRINE ROUGH

This is a  natural untreated rough pieces from Bolivia which is ready for cutting or keeping as a specimen.

We have cut some stones from this parcel which can be seen at our sister site

SEDA GEMS

Ametrine, also known as trystine or by its trade name as bolivianite, is a naturally occurring variety of  quartz . It is a mixture of amethyst and  citrine  with zones of purple and yellow or orange. Almost all commercially available ametrine is mined Bolivia although there are deposits being exploited in Brazil and India

The colour of the zones visible within ametrine is due to differing oxidation states iron within the crystal. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.

Artificial ametrine can be created by differential heat treatment of amethyst.

Most ametrine in the low price segment can surely be assumed to stem from synthetic material. Since 1994 a Russian laboratory has perfected the industrial production of bicolored quartz crystals that are later irradiated to bring out the typical ametrine colors. Green-yellow or golden-blue ametrine does not exist naturally.

 

QUALITY ROUGH

AMETRINE ROUGH

This is a  natural untreated rough pieces from Bolivia which is ready for cutting or keeping as a specimen.

We have cut some stones from this parcel which can be seen at our sister site

SEDA GEMS

Ametrine, also known as trystine or by its trade name as bolivianite, is a naturally occurring variety of  quartz . It is a mixture of amethyst and  citrine  with zones of purple and yellow or orange. Almost all commercially available ametrine is mined Bolivia although there are deposits being exploited in Brazil and India

The colour of the zones visible within ametrine is due to differing oxidation states iron within the crystal. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.

Artificial ametrine can be created by differential heat treatment of amethyst.

Most ametrine in the low price segment can surely be assumed to stem from synthetic material. Since 1994 a Russian laboratory has perfected the industrial production of bicolored quartz crystals that are later irradiated to bring out the typical ametrine colors. Green-yellow or golden-blue ametrine does not exist naturally.

 

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$95.00 USD

$350.00 SALVA $255

Informazioni sull'audit

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

Prezzi e dettagli

ID asta 784386
osservatori 5 guardando
Visto 1,516 volte
Inizia 23rd Jul 2018 8:55pm PDT

Assicurazione sulla spedizione

Fornitore spedizione Transito
FedEx $33.00 10 giorni
Registered Shipping $16.00 21 giorni
Assicurazione di spedizione $7.00 (opzionale)

Quality Rough Dettagli

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