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1.75 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 10.9 x 7.9 mm, Photo A

1.75 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 10.9 x 7.9 mm

Opal

1.75ct1 pc
$ 78.75
10.9 x 7.9 mm
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0.98 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 9 x 6.7 mm, Photo A

0.98 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 9 x 6.7 mm

Opal

0.98ct1 pc
$ 32.34
9 x 6.7 mm
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1.22 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 10.1 x 7.8 mm, Photo A

1.22 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 10.1 x 7.8 mm

Opal

1.22ct1 pc
$ 30.80
10.1 x 7.8 mm
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1.08 carat Opal, loose Certified Opal from Ethiopia, Natural Gem, 8.9 x 6.9 mm, Photo A

1.08 carat Opal, loose Certified Opal from Ethiopia, Natural Gem, 8.9 x 6.9 mm

Opal

1.08ct1 pc
$ 30.24
8.9 x 6.9 mm
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0.55 carat Opal, loose Certified Opal from Ethiopia, Natural Gem, 8.9 x 4.9 mm, Photo A

0.55 carat Opal, loose Certified Opal from Ethiopia, Natural Gem, 8.9 x 4.9 mm

Opal

0.55ct1 pc
$ 15.40
8.9 x 4.9 mm
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1.63 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 7.9 x 6 mm, Photo A

1.63 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 7.9 x 6 mm

Opal

1.63ct total2 pcs
$ 53.79
7.9 x 6 mm
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1.24 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.1 x 7.1 mm, Photo A

1.24 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.1 x 7.1 mm

Opal

1.24ct1 pc
$ 40.92
9.1 x 7.1 mm
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1.05 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 8.9 x 6.7 mm, Photo A

1.05 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 8.9 x 6.7 mm

Opal

1.05ct1 pc
$ 288.75
8.9 x 6.7 mm
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1.09 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 7 x 5.2 mm, Photo A

1.09 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 7 x 5.2 mm

Opal

1.09ct total2 pcs
$ 35.97
7 x 5.2 mm
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2.36 carat Emerald Cut Opal, loose Certified Opal from Ethiopia, Natural Gem, 15.8 x 7.2 mm, Photo A

2.36 carat Emerald Cut Opal, loose Certified Opal from Ethiopia, Natural Gem, 15.8 x 7.2 mm

Opal

2.36ct1 pc
$ 59.78
15.8 x 7.2 mm
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1.25 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.1 x 7 mm, Photo A

1.25 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.1 x 7 mm

Opal

1.25ct1 pc
$ 55.00
9.1 x 7 mm
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1.09 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 10.4 x 7 mm, Photo A

1.09 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 10.4 x 7 mm

Opal

1.09ct1 pc
$ 27.61
10.4 x 7 mm
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1.92 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 10 x 8 mm, Photo A

1.92 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 10 x 8 mm

Opal

1.92ct1 pc
$ 74.68
10 x 8 mm
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1.82 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 8.1 x 6.1 mm, Photo A

1.82 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 8.1 x 6.1 mm

Opal

1.82ct total2 pcs
$ 60.06
8.1 x 6.1 mm
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1.44 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 11.3 x 8.3 mm, Photo A

1.44 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 11.3 x 8.3 mm

Opal

1.44ct1 pc
$ 68.11
11.3 x 8.3 mm
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5.15 carat Square Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 4.6 x 4.5 mm, Photo A

5.15 carat Square Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 4.6 x 4.5 mm

Opal

5.15ct total40 pcs
$ 36.71
4.6 x 4.5 mm
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2.5 carat Pear Shape Opal, loose Certified Opal from Australia, Natural Untreated Gem, 15.8 x 10.2 mm, Photo A

2.5 carat Pear Shape Opal, loose Certified Opal from Australia, Natural Untreated Gem, 15.8 x 10.2 mm

Opal

2.50ct1 pc
$ 112.50
15.8 x 10.2 mm
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1.12 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 7 x 5.2 mm, Photo A

1.12 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 7 x 5.2 mm

Opal

1.12ct total2 pcs
$ 36.96
7 x 5.2 mm
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0.68 carat Multicolor Opal, Oval loose Opal from Ethiopia, Natural Gem, 7.8 x 5.9 mm, Photo A

0.68 carat Multicolor Opal, Oval loose Opal from Ethiopia, Natural Gem, 7.8 x 5.9 mm

Opal

0.68ct1 pc
$ 18.70
7.8 x 5.9 mm
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1.38 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 7.1 x 5.1 mm, Photo A

1.38 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 7.1 x 5.1 mm

Opal

1.38ct total4 pcs
$ 60.72
7.1 x 5.1 mm
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1.44 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.9 x 6.8 mm, Photo A

1.44 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.9 x 6.8 mm

Opal

1.44ct1 pc
$ 36.15
9.9 x 6.8 mm
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4.05 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 15.8 x 9.7 mm, Photo A

4.05 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 15.8 x 9.7 mm

Opal

4.05ct1 pc
$ 102.59
15.8 x 9.7 mm
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5.85 carat Square Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 4.6 x 4.5 mm, Photo A

5.85 carat Square Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 4.6 x 4.5 mm

Opal

5.85ct total30 pcs
$ 37.91
4.6 x 4.5 mm
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1.45 carat Opal, loose Certified Opal from Ethiopia, Natural Gem, 10.7 x 6.8 mm, Photo A

1.45 carat Opal, loose Certified Opal from Ethiopia, Natural Gem, 10.7 x 6.8 mm

Opal

1.45ct1 pc
$ 40.60
10.7 x 6.8 mm
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1.59 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.1 x 7 mm, Photo A

1.59 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.1 x 7 mm

Opal

1.59ct1 pc
$ 36.49
9.1 x 7 mm
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1.85 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 11.9 x 8.3 mm, Photo A

1.85 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 11.9 x 8.3 mm

Opal

1.85ct1 pc
$ 81.40
11.9 x 8.3 mm
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1.61 carat Marquise Cut Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 15.2 x 6.9 mm, Photo A

1.61 carat Marquise Cut Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 15.2 x 6.9 mm

Opal

1.61ct1 pc
$ 70.84
15.2 x 6.9 mm
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1.51 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 10.2 x 8.1 mm, Photo A

1.51 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 10.2 x 8.1 mm

Opal

1.51ct1 pc
$ 37.75
10.2 x 8.1 mm
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1.14 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.1 x 7.1 mm, Photo A

1.14 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.1 x 7.1 mm

Opal

1.14ct1 pc
$ 50.16
9.1 x 7.1 mm
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12.06 carat Trillion Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 18 x 17.2 mm, Photo A
Opal Product Video (462221)

12.06 carat Trillion Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 18 x 17.2 mm

Opal

12.06ct1 pc
$ 485.54
18 x 17.2 mm
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7.07 carat Pear Shape Opal, loose Certified Opal from Australia, Natural Untreated Gem, 19.1 x 13.5 mm, Photo A

7.07 carat Pear Shape Opal, loose Certified Opal from Australia, Natural Untreated Gem, 19.1 x 13.5 mm

Opal

7.07ct1 pc
$ 176.75
19.1 x 13.5 mm
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2.21 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 11.7 x 8.8 mm, Photo A

2.21 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 11.7 x 8.8 mm

Opal

2.21ct1 pc
$ 55.80
11.7 x 8.8 mm
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Photos are of Actual Products for Sale

Opal is a very varied family of gemstones and Hyalite Opals are possibly the most unusual.

More a gemstone for the collector than the jewelry market, Hyalite Opals can be found in Namibia, Madagascar, the USA and most recently, Mexico.

The name Hyalite means water-like and, as the name suggests, they are generally colorless and clear.

However some rare examples can be found in vivid greens and yellows with a spectacular color change and fluorescing phenomena. Tiny amounts of uranium within the gemstone cause dramatic color changes when viewed under daylight or in incandescent lighting.

In addition, the Hyalite gemstone can display fluorescence or luminescence in daylight conditions which is very unusual.

Hyalite Opals contain minute amounts of radioactivity which surely contributes to their amazing color behavior but does not pose any health dangers.

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