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$15.00 USD
Price
Closed
26/02/2023 06:51 am

Grandiderite, 0.7ct, oval shaped perfect coloured gem from Madagascar!

SKU
Dimensions (mm)
6.450 x 5.000 x 3.500mm
Weight (cts)
0.700
Treatment
No Treatment
Type
Faceted
Shape
Oval
Colours

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!



Shipping provider Shipping to Austria Shipping to rest of world
Standard Shipping - Tracked $8.00 / 3 days $15.00 / 21 days
Austria
Standard Shipping - Tracked is discounted to $15.00 on orders with 3 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $17.00 on orders with 3 or more items
FedEx $27.00 / 2 days $46.00 / 5 days
Austria
FedEx is discounted to $26.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $45.00 on orders with 2 or more items
Express Shipping $36.00 / 2 days $75.00 / 5 days
Austria
Express Shipping is discounted to $40.00 on orders with 3 or more items
Rest of the world
Express Shipping is discounted to $65.00 on orders with 3 or more items
Registered Shipping $9.00 / 7 days $16.00 / 21 days
Austria
Registered Shipping is discounted to $15.00 on orders with 3 or more items
Rest of the world
Registered Shipping is discounted to $15.00 on orders with 3 or more items
Standard Shipping - Untracked $5.00 / 3 days $13.00 / 28 days
Austria
Standard Shipping - Untracked is discounted to $15.00 on orders with 3 or more items
Rest of the world
Standard Shipping - Untracked is discounted to $13.00 on orders with 3 or more items

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
Verified
1289 Feedback

  • mattosh666
    mattosh666
    Positive

    Thank you! So beautiful. Starting following you. Definitely doing more business

  • kathmedrn
    kathmedrn
    Positive

    Such a beautiful stone! Prettier than the pic!

Audit

The Gemstone Sheriff program allows our members to request an audit on any product, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

Shipping Details

Shipping:
$15.00 21 days via Standard Shipping - Tracked
Ships from:
Austria

Payment Options

  • paypal
  • stripe
  • escrow
  • gempay
This seller adds 20.00% tax to transactions in Austria.

Overview

Listing Type : Standard
Product ID : 1915105
Starts : 12th February 2023 11:47 am PST
* All prices are in USD