View All Photos (6)
You have not bid on this auction.
3.50 Crt Natural Tanzanite Top Color D-Block Faceted Gemstone
- SKU
- Dimensions (mm)
- 11.000 x 8.500 x 5.000mm
- Weight (cts)
- 3.500
- Type
- Faceted
- Colours
-
Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate) belonging to the epidotegroup. The gemstone was discovered by Manuel d’Souza in the Merelani Hills of Manyara Region in Northern Tanzania in 1967, near the city of Arusha and Mount Kilimanjaro. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km long and 2 km wide) near the Mirerani Hills.
Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystalorientation. Tanzanite can also appear differently when viewed under alternate lighting conditions. The blues appear more evident when subjected to fluorescent light and the violet hues can be seen readily when viewed under incandescent illumination. In its rough state tanzanite is usually colored a reddish brown, and much of it requires heat treatment to remove the brownish “veil” and bring out the blue violet of the stone.
Description:
Treatment : HEATED
- SKU
- Dimensions (mm)
- 11.000 x 8.500 x 5.000 mm
- Weight (cts)
- 3.500
- Type
- Faceted
- Colours
-
Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate) belonging to the epidotegroup. The gemstone was discovered by Manuel d’Souza in the Merelani Hills of Manyara Region in Northern Tanzania in 1967, near the city of Arusha and Mount Kilimanjaro. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km long and 2 km wide) near the Mirerani Hills.
Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystalorientation. Tanzanite can also appear differently when viewed under alternate lighting conditions. The blues appear more evident when subjected to fluorescent light and the violet hues can be seen readily when viewed under incandescent illumination. In its rough state tanzanite is usually colored a reddish brown, and much of it requires heat treatment to remove the brownish “veil” and bring out the blue violet of the stone.
Description:
Treatment : HEATED
Shipping provider | Shipping to Thailand | Shipping to rest of world |
---|---|---|
Standard Shipping - Tracked | $8.00 / 7 days | $8.00 / 21 days |
Rest of the world
Standard Shipping - Tracked is discounted to $15.00 on orders with 2 or more items
|
||
FedEx | $15.00 / 3 days | $25.00 / 7 days |
Rest of the world
FedEx is discounted to $30.00 on orders with 2 or more items
|
||
Registered Shipping | $8.00 / 7 days | $8.00 / 21 days |
Thailand
Registered Shipping is discounted to $20.00 on orders with 2 or more items
Rest of the world
Registered Shipping is discounted to $15.00 on orders with 2 or more items
|
-
Positive
Absolutely stunning, perfect Tsavorite! AAA+++ HIGHLY recommend this vendor!
-
Positive
Beautiful stone.
-
Positive
Very nice stone .
Reserve met!
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.