Tanga Zircon
This is a very red Zircon rough that can be heat treated at home by simply placing a finished stone in a frying pan and heating on the stovetop if you want a lighter color. The material here has not been treated at all but most stones from this area respond to heating. On the other hand, there's nothing wrong with a rich, powerful color finished stone that simply screams RED at you.- Pete
Tzir7.7.92
7.92ct
13x8x5.5mm
$38.65usd
Tzir9.9.11
9.11ct
13.5x8x6.5mm
$44.46usd
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Tzir13.7.50    7.50ct
13x6x5.5mm
$36.60usd
Tzir14.6.51
6.51ct
11x9x5mm
$31.77usd
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Tzir18.5.60
5.60ct
70x7x5mm
$27.33usd
Tzir20.5.09
5.09ct
8.5x7x6mm
$24.84usd
Tzir24.11.14
11.14ct
17.5x9x8mm
$58.49usd
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Unheated Red Zircons!
Red Zircons cut into a really super flashy and popular finished stone so the price for this rough has been going nuts lately. I've been offered a few parcels of really outstanding material but the price has just been too much. So here's where I did some thinking and came up with the common element between all of the reds being sold, heat treatment. Now if you see a rose colored Zircon like this one:


It's a pretty safe assumption that it's been cooked even if the seller doesn't say it. So why pay for heat treatment on these if you can do it yourself? And you can do it yourself but be careful and take appropriate precautions. There are videos on facebook showing a faceted Zircon being heated on a conventional electric stove top although I'd recommend doing it in a pan with a glass lid. 

Anyway, Long story short, I was able to get a shipment of unheated red Zircon facet rough. These are all extremely dark but can be heated to a lighter color. I recommend first faceting your stone and then doing the heat treating so you can stop at whatever level or color you want. Zircon's just about the only stone that can take a rapid heating and cooling so I would NOT try this with any other stone. Here are a couple of video's of my friend Steve Ulstowski, of New Era Gems, heat treating one of these on a electric burner- Pete


https://www.facebook.com/steve.ulatowski/videos/vb.1351140550/10204421798608966/?type=2&theater

https://www.facebook.com/steve.ulatowski/videos/vb.1351140550/10204421844930124/?type=2&theater
RZIR1.15.98
15.98ct
13x10x9.5mm
$187.77usd
RZIR4.15.90
15.90ct
14x12x9mm
$186.83usd
RZIR5.15.05
15.05ct
14x9x8.5mm
$176.84usd
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RZIR6.17.42
17.42ct
15x9.5x9mm
$204.69usd
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RZIR7.12.77
12.77ct
13x10x8mm
$150.05usd
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RZIR8.15.44
15.44ct
15.5x9.5x8.5mm
$181.42usd
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RZIR10.8.27
8.27ct
10.5x9x7mm
$79.39usd
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RZIR11.8.41
8.41ct
10x9x6.5mm
$80.74usd
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RZIR12.8.60
8.60ct
11x9x8mm
$82.56usd
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RZIR15.7.03
7.03ct
11x9x6.5mm
$67.49usd
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RZIR16.7.30
7.30ct
10x9x5.5mm
$70.08usd
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RZIR17.7.75
7.75ct
11x8.5x5.5mm
$74.40
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RZIR18.8.41
8.41ct
12x7x7mm
$80.74usd
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RZIR19.8.58
8.58ct
14x6x5mm
$82.37usd
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Blue Zircon (Heated)
Nigerian
BZN1.9.00
9.00ct
12.5x10x7mm
$49.50usd
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BZN3.16.63
16.63ct
13x13x10.5mm
$144.68usd
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BZN4.8.06
8.06ct
11x8.5x7mm
$44.33usd
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BZN5.8.04
8.04ct
13.5x7x6mm
$48.24usd
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BZN6.5.72
5.72ct
10x7.5x6.5mm
$31.46usd
BZN7.7.91
7.91ct
12x8.5x6mm
$47.46usd
BZN8.6.73
6.73ct
11x7.5x6mm
$37.02usd
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BZN10.7.59
7.59ct
12x9.5x6mm
$45.54usd
BZN11.6.49
6.49ct
10.5x7x6mm
$35.70usd
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BZN12.7.73
7.73ct
16x7.5x6mm
$46.38usd
BZN14.8.80
8.80ct
12.5x7.5x6mm
$48.40usd
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BZN15.6.54
6.54ct
10x8.5x6.5mm
$35.97usd
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BZN16.6.83
6.83ct
12x8x5.5mm
$37.57usd
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BZN17.7.60
7.60ct
12.5x7.5x6.5mm
$41.80usd
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Cambodian Blue Zircon (Heated)
I've been asked about the difference between the Cambodian and Nigerian Blue Zircons. Specifically, the difference in how they cut and the appearance of the cut stones. From my experience with them, so far I cannot tell of any difference :)

BZC4.4.82
4.82ct
9x7.5x4.5mm
$24.10usd
BZC5.4.27
4.27ct
8x7x4.5mm
$21.35usd
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BZC6.4.47
4.47ct
9x6x5mm
$24.59usd
BZC7.4.66
4.66ct
10.5x7x6.5mm
$25.63usd
BZC8.4.67
4.67ct
9.5x7x5.5mm
$25.69usd
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BZC9.5.34
5.34ct
8.5x7.5x6.5mm
$33.64usd
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BZC10.5.47
5.47ct
9x8x4.5mm
$30.09usd
BZC11.6.25
6.25ct
11.5x8.5x4.5mm
$34.38usd
A stunning Rhodolite cut by my good friend Christiane Morin
:)