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48.95 CTS AMETRINE ROUGH PARCEL-PRE SHAPED-BOLIVIAN [F7582]
- UGS
- Dimensions (mm)
- 14.000 x 12.000 x 10.000mm
- Poids (cts)
- 48.950
- Couleurs
-
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.
- UGS
- Dimensions (mm)
- 14.000 x 12.000 x 10.000 mm
- Poids (cts)
- 48.950
- Couleurs
-
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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FedEx | $12.00 / : jours jours | $39.00 / : jours jours |
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Positif
Exactly as pictured. Quickly and securely shipped.
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Positif
Beautiful specimen. Just as shown in the photos. Description was also clear that the photos were taken from wet specimen. Dispatched and arrived quickly. I'm looking forward to buy from this shop again soon.
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Positif
A beautiful ruby specimen
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Positif
It arrived safely.Thank you.
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The Verified Seller has provided accurate and complete information for this item including weight, dimensions and treatment