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36.10cts ALEXANDRITE ROUGH TANZANIA COLOUR CHANGE TBM-95
- Artikelnummer
- Abmessungen (mm)
- 21.500 x 14.500 x 11.000mm
- Gewicht (cts)
- 36.100
- Treatment
- No Treatment
- Typ
- Rough
- Farben
-
ALEXANDERITE
BI-COLOUR TANZANIA-MANGHOLA DUMAWANGA DISTRICT ARUSHA REGION NICE GREEN CHANGES TO PURPLE IDEAL FOR CABBING
TREATMENT-NONE
This rare gemstone is named after the Russian tsar Alexander II (1818-1881), the very first crystals having been discovered in April 1834 in the emerald mines near the River in the Urals. The discovery was made on the day the future tsar came of age. Although alexandrite is a relatively young gemstone, it certainly has a noble history. Since it shows both red and green, the principal colours of old Imperial Russia, it inevitably became the national stone of tsarist Russia. Alexandrite is very scarce: this is due to its chemical composition. It is basically a chrysoberyl, a mineral consisting of colourless or yellow transparent chrysoberyl, chrysoberyl cat’s eye and colour-changing alexandrite (also in cat’s eye varieties). It differs from other chrysoberyls in that it not only contains iron and titanium, but also chromium as a major impurity. And it is this very element which accounts for the spectacular colour change. Rarely, vanadium may also play a part. According to CIBJO nomenclature, only chrysoberyls displaying a distinct change of colour may be termed alexandrite.
- Artikelnummer
- Abmessungen (mm)
- 21.500 x 14.500 x 11.000 mm
- Gewicht (cts)
- 36.100
- Treatment
- No Treatment
- Typ
- Rough
- Farben
-
ALEXANDERITE
BI-COLOUR TANZANIA-MANGHOLA DUMAWANGA DISTRICT ARUSHA REGION NICE GREEN CHANGES TO PURPLE IDEAL FOR CABBING
TREATMENT-NONE
This rare gemstone is named after the Russian tsar Alexander II (1818-1881), the very first crystals having been discovered in April 1834 in the emerald mines near the River in the Urals. The discovery was made on the day the future tsar came of age. Although alexandrite is a relatively young gemstone, it certainly has a noble history. Since it shows both red and green, the principal colours of old Imperial Russia, it inevitably became the national stone of tsarist Russia. Alexandrite is very scarce: this is due to its chemical composition. It is basically a chrysoberyl, a mineral consisting of colourless or yellow transparent chrysoberyl, chrysoberyl cat’s eye and colour-changing alexandrite (also in cat’s eye varieties). It differs from other chrysoberyls in that it not only contains iron and titanium, but also chromium as a major impurity. And it is this very element which accounts for the spectacular colour change. Rarely, vanadium may also play a part. According to CIBJO nomenclature, only chrysoberyls displaying a distinct change of colour may be termed alexandrite.
Versandanbieter | Versand nach:Land | Versand in den Rest der Welt |
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Standard Shipping - Tracked | $30.00 / :Tage Tage | $30.00 / :Tage Tage |
:Land
Standard Shipping - Tracked erhält bei Bestellungen mit 2 oder mehr Artikeln einen Rabatt auf $30.00
Rest der Welt
Standard Shipping - Tracked erhält bei Bestellungen mit 2 oder mehr Artikeln einen Rabatt auf $30.00
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FedEx | $40.00 / :Tage Tage | $40.00 / :Tage Tage |
:Land
FedEx erhält bei Bestellungen mit 2 oder mehr Artikeln einen Rabatt auf $40.00
Rest der Welt
FedEx erhält bei Bestellungen mit 2 oder mehr Artikeln einen Rabatt auf $40.00
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DHL | $30.00 / :Tage Tage | $30.00 / :Tage Tage |
Rest der Welt
DHL erhält bei Bestellungen mit 2 oder mehr Artikeln einen Rabatt auf $30.00
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Positiv
Received the stone in a timely manner. Great communication.
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The Verified Seller has provided accurate and complete information for this item including weight, dimensions and treatment