Opals
Gemstones
Jewelry
Coins
No Reserve Gemstones
No Reserve Opals
No Reserve Jewelry
No Reserve Coins
You have not bid on this auction.
VERY NICE NATURAL TANZANITE 2,96 CTS
- SKU
- Dimensions (mm)
- x x mm
- Weight (cts)
- Certified Gemstones
- No
- Colours
-
This is a very nice natural TANZANITE from Tanzanie...Oval cabochon...2,96cts...9,21 x 6,90 x 5,19mm...
Tanzanite was enthusiastically celebrated as "Gemstone of the 20th Century" after its discovery in 1967. It is named after the East African state of Tanzania where its only deposit has been found. The legendary New York jewelers Tiffany & Co were the first to promote tanzanite as a fine gemstone.
Tanzanite is a variety of the zoisite species. In good quality the color is ultramarine to sapphire blue. The most popular color is a saturated blue, which shows a purplish hue shimmering around it.
Tanzanite needs experienced cutters to treat it carefully, as the stone has perfect cleavage in one direction. The stone is cut in all imaginable shapes and forms, from classical round cuts to imaginative designer cuts.
Nearly all tanzanite has been heat treated to produce the striking violet-blue color.
Species: Zoisite
Color: Sapphire blue, amethyst, violet
Chemical composition: Ca2Al3(Sio4)3(OH) calcium aluminum silicate
Crystal system: Orthorhombic, multifaceted prisms, mostly striated
Hardness: 6.5-7 (Mohs scale)
Specific gravity: 3.35
Refractive index: 1.691 - 1.700
Birefringence: +0.009
Color of streak: White,
Absorption spectrum: 595, 528, 455
Fluorescence: None
...
- SKU
- Dimensions (mm)
- x x mm
- Weight (cts)
- Certified Gemstones
- No
- Colours
-
This is a very nice natural TANZANITE from Tanzanie...Oval cabochon...2,96cts...9,21 x 6,90 x 5,19mm...
Tanzanite was enthusiastically celebrated as "Gemstone of the 20th Century" after its discovery in 1967. It is named after the East African state of Tanzania where its only deposit has been found. The legendary New York jewelers Tiffany & Co were the first to promote tanzanite as a fine gemstone.
Tanzanite is a variety of the zoisite species. In good quality the color is ultramarine to sapphire blue. The most popular color is a saturated blue, which shows a purplish hue shimmering around it.
Tanzanite needs experienced cutters to treat it carefully, as the stone has perfect cleavage in one direction. The stone is cut in all imaginable shapes and forms, from classical round cuts to imaginative designer cuts.
Nearly all tanzanite has been heat treated to produce the striking violet-blue color.
Species: Zoisite
Color: Sapphire blue, amethyst, violet
Chemical composition: Ca2Al3(Sio4)3(OH) calcium aluminum silicate
Crystal system: Orthorhombic, multifaceted prisms, mostly striated
Hardness: 6.5-7 (Mohs scale)
Specific gravity: 3.35
Refractive index: 1.691 - 1.700
Birefringence: +0.009
Color of streak: White,
Absorption spectrum: 595, 528, 455
Fluorescence: None
...
| Shipping provider | Shipping to France | Shipping to rest of world |
|---|---|---|
| Standard Shipping - Tracked | $8.00 / 7 days | $8.00 / 21 days |
|
France
Standard Shipping - Tracked is discounted to $10.00 on orders with 4 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $10.00 on orders with 4 or more items
|
||
| Registered Shipping | $8.00 / 7 days | $8.00 / 21 days |
|
France
Registered Shipping is discounted to $8.00 on orders with 4 or more items
Rest of the world
Registered Shipping is discounted to $8.00 on orders with 4 or more items
|
||
-
PositiveQuite nice,as advertised.
-
Positive
very nice piece!
-
Positive
The magnifier was defective but the company reimbursed all of my costs including shipping so I was happy working with this seller .
-
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 user is willing to bid for the product. Our system will then automatically bid on that users behalf, incrementally increasing the bid to maintain their position as the highest bidder, up to the specified maximum.
When there is an icon indicating 'Auto Bid,' it means our system is actively placing bids for the user based on their maximum bid. This may appear as if users are outbidding themselves, but it's simply a result of the system updating the bid to reflect the users maximum limit.
