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

Informations sur l'élément

Dimensions (mm) 14 x 12 x 9mm
Poids (carats) 48.9 carats
Couleurs
Traitement...

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 SAUVEGARDER $255

Informations de vérification

Le Gemstone Sheriff permet à nos membres de demander un audit sur toute vente aux enchères, qui est complété par un Gemologist indépendant qui évalue l'exactitude de la description de l'article et des images.

Prix et détails

Identifiant de l'enchère 784386
Observateurs 5 regarder
Vu 1,525 fois
Départs 23rd Jul 2018 8:55pm PDT

L'assurance d'expédition

Fournisseur Expédition Transit
FedEx $33.00 10 jours
Registered Shipping $16.00 21 jours
Assurance d'expédition tous les $7.00 (optionnel)

Quality Rough Détails

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