Opals
Gemstones
Jewelry
Coins
You have not bid on this auction.
IICA Certified Premium Quality Natural 4.11 Carat Perfect Oval Tanzanite
- SKU
- Dimensions (mm)
- 11.23 x 9.05 x 5.78mm
- Weight (cts)
- 4.11
- Certificate Gem Lab
- ICA
- Treatment
- Heat Treatment
- Shape
- Fancy
- Type
- Faceted
- Clarity
- VVS
- Colours
-
Tanzanite is the blue to violet gem variety of the mineral Zoisite. Since its relatively recent discovery in 1967, it has become a mainstream and popular gemstone, and is used extensively in jewelry. To date, Tanzanite is found only in the Arusha region of the African country of Tanzania, and it was named after its country of origin.
Tanzanite gemstones are always Heat treated. Natural Tanzanites have a more dull gray, greenish, or brownish color, and heating to above 800 degrees Fahrenheit (about 430 Celsius) will produce the deep blue to violet color. The main appeal of Tanzanite is its lovely color. Its color ranges from pure blue to purplish-blue. It is highly pleochroic, and will display different color saturation when viewed at different angles.
| Shipping provider | Shipping to Thailand | Shipping to rest of world | Combined Shipping (Thailand) | Combined Shipping (rest of the world) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
Not available |
| FedEx |
|
|
Not available | Not available |
- SKU
- Dimensions (mm)
- 11.23 x 9.05 x 5.78 mm
- Weight (cts)
- 4.11
- Certificate Gem Lab
- ICA
- Treatment
- Heat Treatment
- Shape
- Fancy
- Type
- Faceted
- Clarity
- VVS
- Colours
-
Tanzanite is the blue to violet gem variety of the mineral Zoisite. Since its relatively recent discovery in 1967, it has become a mainstream and popular gemstone, and is used extensively in jewelry. To date, Tanzanite is found only in the Arusha region of the African country of Tanzania, and it was named after its country of origin.
Tanzanite gemstones are always Heat treated. Natural Tanzanites have a more dull gray, greenish, or brownish color, and heating to above 800 degrees Fahrenheit (about 430 Celsius) will produce the deep blue to violet color. The main appeal of Tanzanite is its lovely color. Its color ranges from pure blue to purplish-blue. It is highly pleochroic, and will display different color saturation when viewed at different angles.
| Shipping provider | Shipping to Thailand | Shipping to rest of world | Combined Shipping (Thailand) | Combined Shipping (rest of the world) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
Not available |
| FedEx |
|
|
Not available | Not available |
MMG ( Minerals Mania Gems ) One of kind fine & High Quality Gems Experienced of over decade Deal In....
-
PositivePaid and shipped - no feedback left after 100 days
-
Positive
Paid and shipped - no feedback left after 100 days
-
Positive
Wow I can’t say enough good things. Color and cut are amazing, seller was wonderful to work with. 22 dollars in tariffs
-
Positive
Paid and shipped - no feedback left after 100 days
-
Positive
Paid and shipped - no feedback left after 100 days
-
Positive
Very nice stone.
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.
Audit
-
Description Accurate
-
Pictures Accurate
Comments
The Verified Seller has provided accurate and honest pictures and details for this listing. Gem Rock Auctions is committed to holding our sellers to the highest standards of integrity and transparency. As part of this policy, we only permit the sale of natural, earth mined, gemstones. Many Gemstones have received treatments to enhance their color or clarity to further emphasize their beauty and we insist treatments are disclosed. Manmade, synthetic, and imitation gemstones are not permitted on Gem Rock auctions.
