dealsgenuine 1 carat vibrant tanzanite earrings in…

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These look alot like sapphires to me.

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they need some scale props IMO, a quarter or dime next to them couldn't hurt

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Oooh... Tanzanite!
I forget - which anniversary is tanzanite?

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clicking and scrolling leads to the size: 4 x 6 mm, about .45 carats each. Good size for a stud earring and a GREAT price. Goes for several hundred a carat for a good stone. The key is the color (should be a deep bluish purple with flashes of red on a good one) and clear. Clarity here says good. Your guess is as good as mine. Picture looks really nice though.

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I'm a bit annoyed that you're charged separate shipping for orders of multiples, but I'm getting two all the same. One for me and one as a gift.

There are some tanzanites listed on Amazon at suspiciously low prices, and all of the reviews say that the stones you receive are nowhere near the quality of the ones pictured. I hope that's not the case here, but even if it is, this is a pretty solid price regardless.

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Tanzanite is very expensive and for the stones to be this large they must me of horrible quality or heat treated or something. There is no way they could sell Tanzanite for this price unless something is wrong. If it seems to good to be true, it most likely is.

http://www.yourgemologist.com/tanzanite.html

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@xxooss: I think most blue or purple tanzanites that you see are going to be heat treated, from what I've gathered over the years. A google search will show a bunch of images of muddy brown tanzanites and list those as "unheated" stones.

Sometimes you'll see a blue unheated stone, but those are rare.

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@purplefeather: The key to a good stone is the presence of purple. If it is just blue it is low quality.

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This from their website, Color:RICH EGYPTIAN BLUE

? The stones are from Tanzania and Egyptian Blue is just a made up color to make it sound special. All that being said 9.99 for a set of pretty blue earrings is a good price, just don't expect them to appraise for more than 9.99. :)

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@purplefeather: Rough natural tanzanite is reddish brown. It must be heated to 600°C to become violet/blue. Stones that were found already bluish-violet were only ever found in the early days of mining on the surface (late 1960's). Please read the wiki entry on tanzanite heat treatment for more information. http://en.wikipedia.org/wiki/Tanzanite#Heat_treatment

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@dietvernors: Yes. That's what I was trying to say. Blue/purple tanzanite = heat treated. You should just assume as much whenever you see one.

Coated tanzanites might be of a bigger concern than heated. With those the color is just "enhanced" so that you think that the stone has a deep, rich color, but the film eventually wears off.

Why do people seem to instantly hate heated stones, btw? It's a fairly common treatment with a lot of different stones.

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@purplefeather: It could very well be the case. I ordered an aquamarine that was nowhere near the color of the picture. It wasn't even the color of a typical aquamarine. Buyer beware.

http://deals.woot.com/deals/details/b5d503e2-d314-4bea-827a-ba230d295483/genuine-aquamarine-and-diamond-ring-made-in-925-sterling-silver#18