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Grandidierite, 3.1ct, emerald shaped rare stone from Madagascar!
- SKU
- Dppp13
- Afmetingen (mm)
- 10.200 x 8.600 x 4.200mm
- Gewicht (cts)
- 3.100
- Treatment
- No Treatment
- Shape
- Emerald
- 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!
- SKU
- Dppp13
- Afmetingen (mm)
- 10.200 x 8.600 x 4.200 mm
- Gewicht (cts)
- 3.100
- Treatment
- No Treatment
- Shape
- Emerald
- 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:land | Verzending naar de rest van de wereld |
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Standard Shipping - Tracked | $12.00 / :dagen dagen | $16.00 / :dagen dagen |
:land
Standard Shipping - Tracked wordt verdisconteerd tot $15.00 bij bestellingen met 3 of meer artikelen
Rest van de wereld
Standard Shipping - Tracked wordt verdisconteerd tot $17.00 bij bestellingen met 3 of meer artikelen
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FedEx | $27.00 / :dagen dagen | $46.00 / :dagen dagen |
:land
FedEx wordt verdisconteerd tot $26.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
FedEx wordt verdisconteerd tot $45.00 bij bestellingen met 2 of meer artikelen
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Express Shipping | $36.00 / :dagen dagen | $75.00 / :dagen dagen |
:land
Express Shipping wordt verdisconteerd tot $40.00 bij bestellingen met 3 of meer artikelen
Rest van de wereld
Express Shipping wordt verdisconteerd tot $65.00 bij bestellingen met 3 of meer artikelen
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Registered Shipping | $9.00 / :dagen dagen | $16.00 / :dagen dagen |
:land
Registered Shipping wordt verdisconteerd tot $15.00 bij bestellingen met 3 of meer artikelen
Rest van de wereld
Registered Shipping wordt verdisconteerd tot $15.00 bij bestellingen met 3 of meer artikelen
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Standard Shipping - Untracked | $5.00 / :dagen dagen | $13.00 / :dagen dagen |
:land
Standard Shipping - Untracked wordt verdisconteerd tot $15.00 bij bestellingen met 3 of meer artikelen
Rest van de wereld
Standard Shipping - Untracked wordt verdisconteerd tot $13.00 bij bestellingen met 3 of meer artikelen
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![stonehengejpd](https://liveplatforms-production.b-cdn.net/tenants/gr/uploads/sellers/215146/aa5cc8c9-93b2-4a02-ba1b-828a8728181e.jpg)
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Positief
Somehow grandidierites are one of my favorites. Thanks for this goodlooking one. Great seller & store!
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Positief
Really beautiful stone. I'm happy with my purchase.
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Positief
This one is special for sure going to make a treasured family heirloom! Never disappointed with your stones or service. Always a pleasure!
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Positief
Another beautiful stone that surpassed even my expectations ! Always a pleasure to do business with you!
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Als er een pictogram is dat 'Automatisch bieden' aangeeft, betekent dit dat ons systeem actief biedingen plaatst voor de gebruiker op basis van hun maximumbod. Dit kan lijken alsof gebruikers zichzelf overbieden, maar het is gewoon het gevolg van het feit dat het systeem het bod bijwerkt om de maximumlimiet van de gebruiker weer te geven.