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5.97 CTS ALEXANDRITE ROUGH PARCEL RG-5279
- SKU
- Afmetingen (mm)
- 7.000 x 5.000 x 4.000mm
- Gewicht (cts)
- 5.970
- Treatment
- No Treatment
- Kleuren
-
ALEXANDRITE ROUGH PARCEL colour change
TANZANIA-MANGHOLA DUMAWANGA DISTRICT ARUSHA REGION
NICE GREEN CHANGES TO PURPLE/RED
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.
- SKU
- Afmetingen (mm)
- 7.000 x 5.000 x 4.000 mm
- Gewicht (cts)
- 5.970
- Treatment
- No Treatment
- Kleuren
-
ALEXANDRITE ROUGH PARCEL colour change
TANZANIA-MANGHOLA DUMAWANGA DISTRICT ARUSHA REGION
NICE GREEN CHANGES TO PURPLE/RED
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.
Verzend provider | Verzending naar:land | Verzending naar de rest van de wereld |
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Standard Shipping - Tracked | $19.00 / :dagen dagen | $30.00 / :dagen dagen |
:land
Standard Shipping - Tracked wordt verdisconteerd tot $19.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
Standard Shipping - Tracked wordt verdisconteerd tot $30.00 bij bestellingen met 2 of meer artikelen
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FedEx | $39.00 / :dagen dagen | $40.00 / :dagen dagen |
:land
FedEx wordt verdisconteerd tot $39.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
FedEx wordt verdisconteerd tot $40.00 bij bestellingen met 2 of meer artikelen
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DHL | $19.00 / :dagen dagen | $30.00 / :dagen dagen |
Rest van de wereld
DHL wordt verdisconteerd tot $30.00 bij bestellingen met 2 of meer artikelen
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Positief
Attention all Alexandrite buyers (from my aspect as an experienced gem buyer/ a non-professional gemologist, just look hard 1st as gems are gems): BANG FOR THY BUCK! Got the gems on my bf's b'day arrived yesterday, done scrutinies, all 4 are real Alexan
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Positief
Received as expected.thx u
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