Opals
Gemstones
Jewelry
Coins
You have not bid on this auction.
Asscher Cut Pair Tanzanite 6.45 Ct Natural Blue Tanzanite
- SKU
- Dimensions (mm)
- 7.95 x 7.95 x 5.74mm
- Weight (cts)
- 6.45
- Treatment
- Heat Treatment
- Type
- Faceted
- Colours
-
Tanzanite Gemstone :
Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium.[3] Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km (4.3 mi) long and 2 km (1.2 mi) wide)[4] near the Mererani [sw] Hills.[5]
Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation.[6] Tanzanite can also appear differently when viewed under different 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 colored a reddish brown to clear, and it requires heat treatment to remove the brownish "veil" and bring out the blue violet of the stone.[7]
Please settle your Invoice within 24 hrs or let us know to hold it for you if you would like to combine shipping. After 24 hrs the winnings are subject to Cancel.
Treatment None
Feel free to to “make an offer” on our other items :)
We Accept Payments through
Paypal
| Shipping provider | Shipping to Thailand | Shipping to rest of world | Combined Shipping (Thailand) | Combined Shipping (rest of the world) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
|
| DHL |
|
|
|
|
- SKU
- Dimensions (mm)
- 7.95 x 7.95 x 5.74 mm
- Weight (cts)
- 6.45
- Treatment
- Heat Treatment
- Type
- Faceted
- Colours
-
Tanzanite Gemstone :
Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium.[3] Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km (4.3 mi) long and 2 km (1.2 mi) wide)[4] near the Mererani [sw] Hills.[5]
Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation.[6] Tanzanite can also appear differently when viewed under different 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 colored a reddish brown to clear, and it requires heat treatment to remove the brownish "veil" and bring out the blue violet of the stone.[7]
Please settle your Invoice within 24 hrs or let us know to hold it for you if you would like to combine shipping. After 24 hrs the winnings are subject to Cancel.
Treatment None
Feel free to to “make an offer” on our other items :)
We Accept Payments through
Paypal
| Shipping provider | Shipping to Thailand | Shipping to rest of world | Combined Shipping (Thailand) | Combined Shipping (rest of the world) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
|
| DHL |
|
|
|
|
-
PositiveGreat stone and delivered timely. Great service. Thank you very much.
-
Positive
The best seller! Can’t recommend enough!!
Reserve not met
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.
