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$4,000.00 USD
Estimated RRP $8,000.00

161.8 CTS ALEXANDRITE ROUGH TANZANIA COLOUR CHANGE TBM-1123

3299
5

SKU
tbm-1123
Dimensions (mm)
26.000 x 20.700 x 23.000mm
Weight (cts)
161.800
Treatment
No Treatment
Clarity
N/A
Type
Rough
Colours

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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Standard Shipping - Tracked $20.00 / 7 days $30.00 / 14 days
Australia
Standard Shipping - Tracked is discounted to $25.00 on orders with 2 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $30.00 on orders with 2 or more items
FedEx $40.00 / 3 days $40.00 / 7 days
Australia
FedEx is discounted to $40.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $40.00 on orders with 2 or more items
DHL $30.00 / 2 days $30.00 / 21 days
Rest of the world
DHL is discounted to $30.00 on orders with 2 or more items

trueblueminerals
trueblueminerals
rare large gemstones and minerals
Mermaid Beach, Australia
Verified
809 Feedback

  • peketrain
    peketrain
    Positive

    Very pleased with the specimen and transaction

  • scsamler
    scsamler
    Positive

    This stone made me fall in love with Padparadsha sapphire. Truly wonderful!

  • setillia
    setillia
    Neutral

    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.

  • bainesrh
    bainesrh
    Positive

    Beautiful gemstone

20%
Coupon code Gift
Valid Until
31st Dec 2024

Audit

This product has been audited by a Gemstone Sheriff and they have found the following:
  • Description Accurate
  • Pictures Accurate

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.

This audit was requested 11 months ago
Last updated 11 months ago

Shipping Details

Shipping:
$30.00 14 days via Standard Shipping - Tracked
Ships from:
Australia

Payment Options

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Overview

Listing Type : Standard
Product ID : 1876979
Starts : 19th December 2024 03:04 pm PST
* All prices are in USD