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$4,501.00
Trenutna ponuda
1
Ponude
Zatvoreno
23/12/2023 08:55 am
1
7158
18

184.5 CTS ALEXANDRITE ROUGH TANZANIA COLOUR CHANGE TBM-1124

SKU
Dimenzije (mm)
27.500 x 26.400 x 22.000mm
Težina (cts)
184.500
Treatment
No Treatment
Tip
Rough
Boje

ALEXANDERITE ROUGH
 
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.

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Ostatak svijeta
FedEx je snižen na $40.00 na narudžbe s 2 ili više artikala
DHL $30.00 / :dani dani $30.00 / :dani dani
Ostatak svijeta
DHL je snižen na $30.00 na narudžbe s 2 ili više artikala

trueblueminerals
trueblueminerals
rare large gemstones and minerals
:Grad drzava
Provjereno
:ukupne povratne informacije

  • gk99
    gk99
    Pozitivan

    Paid and shipped - no feedback left after 100 days

  • setillia
    setillia
    Neutralan

    Responsive seller, which is appreciated. Lovely gem. The only issue was with shipping. I paid for post but it was sent via Fedex. Fedex (of course) charged me illegal fees over a month after delivery! This was why I chose post and not Fedex.

  • olga22220
    olga22220
    Pozitivan

    Paid and shipped - no feedback left after 100 days

  • hippu65
    hippu65
    Pozitivan

    Been watching this for some time.. Got me a deal..! Great !

Povijest ponuda (1)
gk99
Prethodno kupljen od ovog prodavatelja
prije 10 mjeseci
$4500.00

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Revizija

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Comments

The Verified Seller responsible for this item has diligently provided us with accurate and comprehensive information, encompassing crucial details such as weight, dimensions, and treatment. It is important to reiterate our commitment to upholding the highest standards of integrity and transparency in the gemstone industry. As part of our policy, we strictly permit the sale of exclusively natural gemstones that have been sourced directly from the Earth. However, in the event that a gemstone has undergone any form of treatment, it is mandatory for the seller to provide full disclosure regarding the treatment process. Furthermore, we would like to emphasize that man-made gemstones, including simulants and imitations, are strictly prohibited on our platform. We prioritize the promotion of authentic, natural gemstones to ensure a genuine and trustworthy marketplace for our valued customers. Should you have any further inquiries or require additional assistance, please do not hesitate to reach out. We are here to assist you and provide a seamless experience on Gem Rock Auctions.

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Zadnje ažuriranje: datum

Detalji dostave

dostava:
$30.00 14 days putem Standard Shipping - Tracked
Brodovi iz:
Australia

Načini plačanja

  • stripe

Pregled

Vrsta unosa : Standard
Identifikacijski broj proizvoda : 1068357
Procijenjeni RRP : $9,000.00
Početna ponuda : $4,500
Počinje : 21st December 2023 01:48 am PST
Završava : 23rd December 2023 08:55 am PST
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