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8.11 carat Pear Boulder Opal, loose Certified Boulder Opal from Australia, Natural Untreated Gem, 22.1 x 13.8 mm, Photo A

8.11 carat Pear Boulder Opal, loose Certified Boulder Opal from Australia, Natural Untreated Gem, 22.1 x 13.8 mm

Boulder Opal

8.11ct1 pc
$ 90.55
22.1 x 13.8 mm
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2.2 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 9.8 x 5.1 mm, Photo A

2.2 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 9.8 x 5.1 mm

Pyrope Garnet

2.20ct total2 pcs
$ 19.36
9.8 x 5.1 mm
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4.02 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 8.1 x 5.1 mm, Photo A

4.02 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 8.1 x 5.1 mm

Citrine

4.02ct total5 pcs
$ 25.54
8.1 x 5.1 mm
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0.62 carat Pink Malaya Garnet, Cushion loose Malaya Garnet from Tanzania, Natural Untreated Gem, 5.9 x 4.1 mm, Photo A

0.62 carat Pink Malaya Garnet, Cushion loose Malaya Garnet from Tanzania, Natural Untreated Gem, 5.9 x 4.1 mm

Malaya Garnet

0.62ct1 pc
$ 27.28
5.9 x 4.1 mm
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0.58 carat Blue Kyanite, Round loose Kyanite from Nepal, Natural Untreated Gem, 4.3 mm, Photo A

0.58 carat Blue Kyanite, Round loose Kyanite from Nepal, Natural Untreated Gem, 4.3 mm

Kyanite

0.58ct1 pc
$ 14.50
4.3 mm
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41.05 ct Cushion Fossil Coral, 20 x 15.7 mm From Indonesia, Photo A

41.05 ct Cushion Fossil Coral, 20 x 15.7 mm From Indonesia

Fossil Coral

41.05ct total2 pcs
$ 73.60
20 x 15.7 mm
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3.06 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 8.4 x 6.3 mm, Photo A

3.06 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 8.4 x 6.3 mm

Zircon

3.06ct1 pc
$ 72.60
8.4 x 6.3 mm
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1.59 carat Yellow Tourmaline, Pear Shape loose Tourmaline from Mozambique, Natural Untreated Gem, 9.3 x 7.3 mm, Photo A

1.59 carat Yellow Tourmaline, Pear Shape loose Tourmaline from Mozambique, Natural Untreated Gem, 9.3 x 7.3 mm

Tourmaline

1.59ct1 pc
$ 65.73
9.3 x 7.3 mm
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2.41 ct Cushion Cut Peridot, 8.4 x 7.5 mm From Myanmar, Photo A

2.41 ct Cushion Cut Peridot, 8.4 x 7.5 mm From Myanmar

Peridot

2.41ct1 pc
$ 95.89
8.4 x 7.5 mm
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1.58 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6.3 x 6.2 mm, Photo A

1.58 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6.3 x 6.2 mm

Citrine

1.58ct total2 pcs
$ 12.17
6.3 x 6.2 mm
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0.51 ct Orange Sphalerite, 4.9 x 4.2 mm Oval Cut From Spain, Photo A

0.51 ct Orange Sphalerite, 4.9 x 4.2 mm Oval Cut From Spain

Sphalerite

0.51ct1 pc
$ 25.50
4.9 x 4.2 mm
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5.37 ct Yellow Quartz, 10.9 x 10.8 mm Asscher Cut From Brazil, Photo A

5.37 ct Yellow Quartz, 10.9 x 10.8 mm Asscher Cut From Brazil

Quartz

5.37ct1 pc
$ 29.54
10.9 x 10.8 mm
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2.01 carat Princess-Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8.1 x 8.1 mm, Photo A

2.01 carat Princess-Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8.1 x 8.1 mm

Amethyst

2.01ct1 pc
$ 16.08
8.1 x 8.1 mm
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4.96 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 9.2 x 7.2 mm, Photo A

4.96 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 9.2 x 7.2 mm

Topaz

4.96ct total2 pcs
$ 38.19
9.2 x 7.2 mm
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1.15 ct Loose Purple Sapphire, 6.3 x 4.4 mm Oval Cut From Madagascar, Photo A

1.15 ct Loose Purple Sapphire, 6.3 x 4.4 mm Oval Cut From Madagascar

Sapphire

1.15ct total2 pcs
$ 112.31
6.3 x 4.4 mm
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23.52 ct Green Aventurine, 24.2 x 12.5 mm Odd Shaped From Brazil, Photo A

23.52 ct Green Aventurine, 24.2 x 12.5 mm Odd Shaped From Brazil

Aventurine

23.52ct total2 pcs
$ 54.59
24.2 x 12.5 mm
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5.71 ct Oval Agate, 15.6 x 10.9 mm From Indonesia, Photo A

5.71 ct Oval Agate, 15.6 x 10.9 mm From Indonesia

Agate

5.71ct1 pc
$ 4.57
15.6 x 10.9 mm
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3.18 carat Swiss Blue Topaz, Heart loose Topaz from Brazil, Natural Gem, 9.1 x 8.9 mm, Photo A

3.18 carat Swiss Blue Topaz, Heart loose Topaz from Brazil, Natural Gem, 9.1 x 8.9 mm

Topaz

3.18ct1 pc
$ 22.39
9.1 x 8.9 mm
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1.72 ct Oval Cut Peridot, 7.1 x 5 mm From China, Photo A

1.72 ct Oval Cut Peridot, 7.1 x 5 mm From China

Peridot

1.72ct total2 pcs
$ 24.08
7.1 x 5 mm
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0.92 carat Oval Peridot, loose Certified Peridot from China, Natural Untreated Gem, 7.1 x 5.1 mm, Photo A

0.92 carat Oval Peridot, loose Certified Peridot from China, Natural Untreated Gem, 7.1 x 5.1 mm

Peridot

0.92ct1 pc
$ 12.88
7.1 x 5.1 mm
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0.94 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 9.5 x 4.9 mm, Photo A

0.94 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 9.5 x 4.9 mm

Sapphire

0.94ct1 pc
$ 206.80
9.5 x 4.9 mm
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13.07 ct Baguette Malachite, 12.3 x 10.1 mm From Congo, Photo A

13.07 ct Baguette Malachite, 12.3 x 10.1 mm From Congo

Malachite

13.07ct1 pc
$ 18.69
12.3 x 10.1 mm
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1 ct Loose Pink Tourmaline, 6.2 mm Round Cabochon From Mozambique, Photo A

1 ct Loose Pink Tourmaline, 6.2 mm Round Cabochon From Mozambique

Tourmaline

1.00ct1 pc
$ 17.21
6.2 mm
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2.74 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 9.3 x 7.9 mm, Photo A

2.74 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 9.3 x 7.9 mm

Hessonite Garnet

2.74ct1 pc
$ 41.02
9.3 x 7.9 mm
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0.69 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.5 x 4.4 mm, Photo A

0.69 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.5 x 4.4 mm

Sapphire

0.69ct1 pc
$ 55.20
5.5 x 4.4 mm
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3.64 ct Green Apatite, 8.5 x 8.4 mm Asscher Cut From Madagascar, Photo A

3.64 ct Green Apatite, 8.5 x 8.4 mm Asscher Cut From Madagascar

Apatite

3.64ct1 pc
$ 80.08
8.5 x 8.4 mm
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0.8 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 7.9 x 4.8 mm, Photo A

0.8 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 7.9 x 4.8 mm

Color-Change Diaspore

0.80ct1 pc
$ 28.19
7.9 x 4.8 mm
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11.27 ct Oval Star Ruby, 13.5 x 12.1 mm From Madagascar, Photo A

11.27 ct Oval Star Ruby, 13.5 x 12.1 mm From Madagascar

Star Ruby

11.27ct1 pc
$ 148.76
13.5 x 12.1 mm
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1.42 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6 mm, Photo A

1.42 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6 mm

Citrine

1.42ct total2 pcs
$ 9.94
6.1 x 6 mm
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11.53 carat Swiss Blue Topaz, Carved Flower loose Topaz from Brazil, Natural Gem, 18.9 x 9.9 mm, Photo A
Click for Product Video (485948)

11.53 carat Swiss Blue Topaz, Carved Flower loose Topaz from Brazil, Natural Gem, 18.9 x 9.9 mm

Topaz

11.53ct1 pc
$ 114.15
18.9 x 9.9 mm
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2.48 carat Blue Green Fluorite, Pear Shape loose Fluorite from India, Natural Untreated Gem, 9.7 x 7 mm, Photo A

2.48 carat Blue Green Fluorite, Pear Shape loose Fluorite from India, Natural Untreated Gem, 9.7 x 7 mm

Fluorite

2.48ct1 pc
$ 9.92
9.7 x 7 mm
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7.88 ct Asscher Cut Rose Quartz, 12.3 x 12 mm From South Africa, Photo A

7.88 ct Asscher Cut Rose Quartz, 12.3 x 12 mm From South Africa

Rose Quartz

7.88ct1 pc
$ 43.34
12.3 x 12 mm
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Photos are of Actual Products for Sale

Alexandrite is one of the rarest of all colored gemstones and is famed for its color change from green in daylight to red under incandescent light. Fine faceted alexandrite over 1 carat is more valuable than sapphire, ruby or emerald.

Alexandrite is a variety of chrysoberyl, with an excellent hardness of 8.5 on the Mohs scale, placing it right behind sapphire and ruby. Alexandrite is rare because of its chemical composition. Chrysoberyl is colored by traces iron and titanium, but alexandrite is also colored by chromium, which gives it the emerald green hue in daylight.

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