You have not bid on this auction.
No Reserve 5.10 Carats Rare Grandidierite Cabochon
- SKU
- Dimensions (mm)
- 12.800 x 10.200 x 5.500mm
- Weight (cts)
- 5.100
- Treatment
- No Treatment
- Shape
- Oval
- Type
- Cabochon
- Colours
-
DESCRIPTION
Grandidierite is a rare 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
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).[4]
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. Nevertheless, lazulites have somewhat higher refractive indices and specific gravity. Grandidierites also have greater hardness.
THIS IS NATURAL STONES MINED FROM EARTH WITH GOOD LUSTER GOOD CUT SHINNY LUSTER
SITE POLICY :
WE SELL ONLY A NATURAL STONES SOME ARE HEATED AND SOME ARE UNTREATED IF CUSTOMER NOT LIKE THE STONE CAN LET US KNOW WE ALWAYS READY TO REFUND THE MONEY AFTER WE GET STONE BACK CUSTOMER SATISFACTION IS OUR PRIORITY.
This Product is now in our Thailand warehouse for quick and cost-effective shipping.
- SKU
- Dimensions (mm)
- 12.800 x 10.200 x 5.500 mm
- Weight (cts)
- 5.100
- Treatment
- No Treatment
- Shape
- Oval
- Type
- Cabochon
- Colours
-
DESCRIPTION
Grandidierite is a rare 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
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).[4]
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. Nevertheless, lazulites have somewhat higher refractive indices and specific gravity. Grandidierites also have greater hardness.
THIS IS NATURAL STONES MINED FROM EARTH WITH GOOD LUSTER GOOD CUT SHINNY LUSTER
SITE POLICY :
WE SELL ONLY A NATURAL STONES SOME ARE HEATED AND SOME ARE UNTREATED IF CUSTOMER NOT LIKE THE STONE CAN LET US KNOW WE ALWAYS READY TO REFUND THE MONEY AFTER WE GET STONE BACK CUSTOMER SATISFACTION IS OUR PRIORITY.
This Product is now in our Thailand warehouse for quick and cost-effective shipping.
Shipping provider | Shipping to United States of America | Shipping to rest of world |
---|---|---|
Standard Shipping - Tracked | $20.00 / 15 days | $20.00 / 25 days |
United States of America
Standard Shipping - Tracked is discounted to $20.00 on orders with 2 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $20.00 on orders with 2 or more items
|
||
FedEx | $45.00 / 9 days | $45.00 / 14 days |
United States of America
FedEx is discounted to $45.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $45.00 on orders with 2 or more items
|
||
DHL | $60.00 / 7 days | $60.00 / 10 days |
United States of America
DHL is discounted to $60.00 on orders with 2 or more items
Rest of the world
DHL is discounted to $60.00 on orders with 2 or more items
|
-
Positive
Beautiful gem
-
Positive
Paid and shipped - no feedback left after 100 days
-
Positive
Paid and shipped - no feedback left after 100 days
Why are users outbidding themselves?
When a bid is placed, this is the maximum amount a person is willing to bid for the product. Our system will then automatically bid on behalf of the bidder, incrementally increasing the bid up to the maximum to maintain their position as the highest bidder.
When there is an icon indicating 'Automatic Bid', it means our system is actively placing bids for the bidder based on their maximum bid. This may appear as if bidders are outbidding themselves, but it's simply a result of the system updating the bid to reflect the bidders maximum limit.