Grandidierite, 5.25ct, emerald cut beautiful rare stone!
- SKU
- Fmzk19
- Dimensiones (mm)
- 12.700 x 8.800 x 5.700mm
- Peso (cts)
- 5.250
- Treatment
- No Treatment
- Shape
- Emerald
- Tipo
- Faceted
- Clarity
- SI
- Colores
-
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
- Fmzk19
- Dimensiones (mm)
- 12.700 x 8.800 x 5.700 mm
- Peso (cts)
- 5.250
- Treatment
- No Treatment
- Shape
- Emerald
- Tipo
- Faceted
- Clarity
- SI
- Colores
-
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!
Proveedor de envío | Envío a Austria | Envíos al resto del mundo |
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Standard Shipping - Tracked | $12.00 / 3 días días | $16.00 / 21 días días |
Austria
Standard Shipping - Tracked tiene descuento a $15.00 en pedidos con 3 o más artículos
Resto del mundo
Standard Shipping - Tracked tiene descuento a $17.00 en pedidos con 3 o más artículos
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FedEx | $27.00 / 2 días días | $46.00 / 5 días días |
Austria
FedEx tiene descuento a $26.00 en pedidos con 2 o más artículos
Resto del mundo
FedEx tiene descuento a $45.00 en pedidos con 2 o más artículos
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Express Shipping | $36.00 / 2 días días | $75.00 / 5 días días |
Austria
Express Shipping tiene descuento a $40.00 en pedidos con 3 o más artículos
Resto del mundo
Express Shipping tiene descuento a $65.00 en pedidos con 3 o más artículos
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Registered Shipping | $9.00 / 7 días días | $16.00 / 21 días días |
Austria
Registered Shipping tiene descuento a $15.00 en pedidos con 3 o más artículos
Resto del mundo
Registered Shipping tiene descuento a $15.00 en pedidos con 3 o más artículos
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Standard Shipping - Untracked | $5.00 / 3 días días | $13.00 / 28 días días |
Austria
Standard Shipping - Untracked tiene descuento a $15.00 en pedidos con 3 o más artículos
Resto del mundo
Standard Shipping - Untracked tiene descuento a $13.00 en pedidos con 3 o más artículos
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Positivo
Received, thank you
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Positivo
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.
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Positivo
Received, thank you
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Positivo
Received, thank you
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Positivo
Great stone . great seller