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$49.00
Huidig ​​bod
1
Biedingen
Gesloten
12/09/2024 01:22 am

Grandidierite, 7.25ct, big gemstone born in Madagascar!

1
840
6

SKU
Dip5
Afmetingen (mm)
15.100 x 10.800 x 6.800mm
Gewicht (cts)
7.250
Treatment
No Treatment
Shape
Oval
Type
Faceted
Clarity
SI
Kleuren

Grandidierite is a mineral that was first discovered in 1902 in southern Madagascar. The mineral was named in honor of French explorer Alfred Grandidier (1836–1912) who studied the natural history of Madagascar.

A rather rare mineral, blue-green grandidierite is seldom seen in gem or jewelry collections. Translucent material is sometimes cut into cabochons. Faceted pieces are rare. As cabochons, translucent grandidierite can range from 1 to 10 carats and up to about one inch in size. Most material is generally opaque.[citation needed]

Since its discovery in 1902, most grandidierite used as a gem has been translucent. Recent discoveries of transparent material in Sri Lanka (around 2000) and a new deposit in Madagascar (2014) have resulted in faceted gemstones.

Grandidierites appear bluer in color the more iron (Fe) they contain. A recently discovered gemstone, blue ominelite is the Fe-analogue (Fe, Mg) to grandidierite (Mg, Fe).

Grandidierites display strong trichroic pleochroism. That means they can show three different colors depending on the viewing angle: dark blue-green, colorless (sometimes a very light yellow), or dark green.

While trichroism can usually help distinguish grandidierites from other gems, lazulites can occur with blue-green colors and show colorless/blue/dark blue pleochroism. They also appear cabbed and, more rarely, faceted. Nevertheless, lazulites have somewhat higher refractive indices and specific gravity. Grandidierites also have greater hardness.


Shipping: For special requests such as express delivery please contact me. For lost stones the seller is not liable, therefore an additional insurance is recommended. Right of return within two weeks after receiving the shipment. Payment via PayPal, Credit Card, or Bank transfer is possible. For the shipping I generally use: Austrian Post or FedEx. Unfortunately from Austria only DHL "express" is possible.


Please pay your stones in between 48 hours or contact me. Otherwise I need to cancel the deal.

If there is anything you shouldn't be satisfied with please just let me now and we will find a way to solve every problem. My aim is to make you happy with beautiful stones of good quality, good communication is the easiest way to find a solution!



Verzend provider Verzending naar Austria Verzending naar de rest van de wereld
Standard Shipping - Tracked $12.00 / 3 $16.00 / 21
Austria
Standard Shipping - Tracked krijgt korting op $15.00 bij bestellingen met 3 of meer artikelen
Rest van de wereld
Standard Shipping - Tracked krijgt korting op $17.00 bij bestellingen met 3 of meer artikelen
FedEx $27.00 / 2 $46.00 / 5
Austria
FedEx krijgt korting op $26.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
FedEx krijgt korting op $45.00 bij bestellingen met 2 of meer artikelen
Express Shipping $36.00 / 2 $75.00 / 5
Austria
Express Shipping krijgt korting op $40.00 bij bestellingen met 3 of meer artikelen
Rest van de wereld
Express Shipping krijgt korting op $65.00 bij bestellingen met 3 of meer artikelen
Registered Shipping $9.00 / 7 $16.00 / 21
Austria
Registered Shipping krijgt korting op $15.00 bij bestellingen met 3 of meer artikelen
Rest van de wereld
Registered Shipping krijgt korting op $15.00 bij bestellingen met 3 of meer artikelen
Standard Shipping - Untracked $5.00 / 3 $13.00 / 28
Austria
Standard Shipping - Untracked krijgt korting op $15.00 bij bestellingen met 3 of meer artikelen
Rest van de wereld
Standard Shipping - Untracked krijgt korting op $13.00 bij bestellingen met 3 of meer artikelen

stonehengejpd
stonehengejpd
Selling all kind of gems, great quality at affordable prices, based in the heart of Europe! In case you may have special wishes just let me know :-) If you shouldn´t be satisfied with an order please do not give a negative feedback just let me know and there is always a way to find a solution that everybody is happy!
Graz , Austria
Geverifieerd
2871 feedback

  • jtg56
    jtg56
    Positief

    Paid and shipped - no feedback left after 100 days

  • graphicequaliser
    graphicequaliser
    Positief

    An exquisite gem and very clean. It arrived promptly too. Thank you.

  • andrewchi
    andrewchi
    Positief

    Received, thank you

  • davetcummings
    davetcummings
    Positief

    This gem arrived in a reasonable time, and it is absolutely spectacular. It looked exactly like the photos and the cut was just perfect. I will certainly do business with stonehengejpd in the future.

  • josephb53
    josephb53
    Positief

    Beautiful, arrived exactly as described. Very happy with purchase.

Biedingen geschiedenis (1)
jtg56
Eerder gekocht bij deze verkoper
3 maanden geleden
$48.00

Waarom overbieden gebruikers zichzelf?

Automatisch bod-pictogram
Automatisch bod

Wanneer een bod wordt geplaatst, is dit het maximale bedrag dat een persoon bereid is te bieden voor het product. Ons systeem zal dan automatisch bieden namens de bieder, waarbij het bod stapsgewijs wordt verhoogd tot het maximum om hun positie als hoogste bieder te behouden.

Wanneer er een pictogram is dat 'Automatisch bod' aangeeft, betekent dit dat ons systeem actief biedingen plaatst voor de bieder op basis van hun maximale bod. Dit kan lijken alsof bieders zichzelf overbieden, maar het is gewoon een resultaat van het systeem dat het bod bijwerkt om de maximale limiet van de bieder weer te geven.

Audit

Dit product is gecontroleerd door een Gemstone Sheriff en zij hebben het volgende gevonden:
  • Beschrijving Nauwkeurig
  • Foto's Nauwkeurig

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.

Deze audit is aangevraagd op 8 maanden geleden
Laatst bijgewerkt 8 maanden geleden

Verzendgegevens

Verzenden:
$16.00 21 dagen via Standard Shipping - Tracked
Schepen van:
Austria

Betalingsmogelijkheden

  • paypal
  • stripe
  • escrow
Deze verkoper voegt 20.00% belasting toe aan transacties in Austria .

Overzicht

Vermeldingstype : Standard
Product-ID : 2438302
Openingsbod : $39
Begint : 1st September 2024 12:10 pm PDT
Loopt af : 12th September 2024 01:22 am PDT
* Alle prijzen zijn in USD