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18.27 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 26.2 x 17 mm, Photo A

18.27 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 26.2 x 17 mm

Obsidian

18.27ct1 pc
$ 16.08
26.2 x 17 mm
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1.05 ct Violet Spinel, 6.7 x 5.6 mm Oval Cut From Tanzania, Photo A

1.05 ct Violet Spinel, 6.7 x 5.6 mm Oval Cut From Tanzania

Spinel

1.05ct1 pc
$ 108.60
6.7 x 5.6 mm
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22.53 ct Pencil Cut Tiger's Eye, 33.2 x 9.2 mm From Thailand, Photo A

22.53 ct Pencil Cut Tiger's Eye, 33.2 x 9.2 mm From Thailand

Tiger's Eye

22.53ct1 pc
$ 6.76
33.2 x 9.2 mm
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2.04 ct Red Coral, 10.4 x 5.5 mm Oval Cut From Australia, Photo A

2.04 ct Red Coral, 10.4 x 5.5 mm Oval Cut From Australia

Coral

2.04ct1 pc
$ 336.60
10.4 x 5.5 mm
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2.06 ct Cushion Cut Peridot, 8.4 x 6.2 mm From Myanmar, Photo A

2.06 ct Cushion Cut Peridot, 8.4 x 6.2 mm From Myanmar

Peridot

2.06ct1 pc
$ 88.37
8.4 x 6.2 mm
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2.05 ct Oval Spectrolite, 10 x 8.3 mm From Finland, Photo A

2.05 ct Oval Spectrolite, 10 x 8.3 mm From Finland

Spectrolite

2.05ct1 pc
$ 9.41
10 x 8.3 mm
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24.29 ct Carved Rose Tiger's Eye, 15.9 x 15.8 mm From Thailand, Photo A

24.29 ct Carved Rose Tiger's Eye, 15.9 x 15.8 mm From Thailand

Tiger's Eye

24.29ct total2 pcs
$ 32.07
15.9 x 15.8 mm
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13.46 ct Oval Larimar, 20.1 x 15.2 mm From the Dominican Republic, Photo A

13.46 ct Oval Larimar, 20.1 x 15.2 mm From the Dominican Republic

Larimar

13.46ct1 pc
$ 44.82
20.1 x 15.2 mm
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51.51 ct Cushion Variscite, 33.9 x 29.9 mm From Australia, Photo A

51.51 ct Cushion Variscite, 33.9 x 29.9 mm From Australia

Variscite

51.51ct1 pc
$ 41.93
33.9 x 29.9 mm
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7.56 ct Yellow Moonstone, 14 x 10.2 mm Oval Cut From India, Photo A

7.56 ct Yellow Moonstone, 14 x 10.2 mm Oval Cut From India

Moonstone

7.56ct1 pc
$ 16.72
14 x 10.2 mm
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2.03 carat Violet Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5 x 3.1 mm, Photo A

2.03 carat Violet Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5 x 3.1 mm

Tanzanite

2.03ct total10 pcs
$ 78.16
5 x 3.1 mm
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1.36 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 10.1 x 6.8 mm, Photo A

1.36 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 10.1 x 6.8 mm

Opal

1.36ct1 pc
$ 30.24
10.1 x 6.8 mm
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0.42 ct Orange Sphalerite, 4.4 mm Round Cut From Spain, Photo A

0.42 ct Orange Sphalerite, 4.4 mm Round Cut From Spain

Sphalerite

0.42ct1 pc
$ 21.00
4.4 mm
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2.14 carat Pink Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gems, 6 mm, Photo A

2.14 carat Pink Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gems, 6 mm

Tourmaline

2.14ct total2 pcs
$ 35.61
6 mm
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2.31 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.1 x 5.1 mm, Photo A

2.31 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.1 x 5.1 mm

Pyrope Garnet

2.31ct total2 pcs
$ 20.33
10.1 x 5.1 mm
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5.68 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.1 x 10.2 mm, Photo A

5.68 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.1 x 10.2 mm

Amethyst

5.68ct1 pc
$ 37.49
15.1 x 10.2 mm
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4.89 carat Trillion Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5.2 x 5.1 mm, Photo A

4.89 carat Trillion Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5.2 x 5.1 mm

Rhodolite Garnet

4.89ct total10 pcs
$ 43.03
5.2 x 5.1 mm
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2.6 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 9.8 mm, Photo A

2.6 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 9.8 mm

Amethyst

2.60ct1 pc
$ 19.56
10 x 9.8 mm
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1.42 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 8.1 x 6.1 mm, Photo A

1.42 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 8.1 x 6.1 mm

Topaz

1.42ct1 pc
$ 9.94
8.1 x 6.1 mm
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13.96 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 19.6 x 17.1 mm, Photo A
Click for Product Video (614375)

13.96 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 19.6 x 17.1 mm

Ammolite

13.96ct1 pc
$ 153.56
19.6 x 17.1 mm
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1.7 carat Round Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 7 mm, Photo A

1.7 carat Round Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 7 mm

Pyrope Garnet

1.70ct1 pc
$ 14.96
7 mm
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2.4 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 9.8 x 7.9 mm, Photo A

2.4 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 9.8 x 7.9 mm

Tanzanite

2.40ct1 pc
$ 20.86
9.8 x 7.9 mm
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0.74 carat Teal Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 4.9 x 4.8 mm, Photo A

0.74 carat Teal Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 4.9 x 4.8 mm

Sapphire

0.74ct1 pc
$ 59.20
4.9 x 4.8 mm
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0.38 ct Oval Cut Chrysoberyl Cat's Eye, 3.4 x 3.2 mm From Sri Lanka, Photo A

0.38 ct Oval Cut Chrysoberyl Cat's Eye, 3.4 x 3.2 mm From Sri Lanka

Chrysoberyl Cat's Eye

0.38ct total2 pcs
$ 12.07
3.4 x 3.2 mm
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5.28 ct Blue Star Sapphire, 7 x 5.2 mm Oval Cut From Thailand, Photo A

5.28 ct Blue Star Sapphire, 7 x 5.2 mm Oval Cut From Thailand

Star Sapphire

5.28ct total4 pcs
$ 116.16
7 x 5.2 mm
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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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1.41 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.1 x 3.1 mm, Photo A

1.41 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.1 x 3.1 mm

Tanzanite

1.41ct total6 pcs
$ 54.29
5.1 x 3.1 mm
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8.65 ct Round Concave Cut Smoky Quartz, 14.1 mm From Brazil, Photo A

8.65 ct Round Concave Cut Smoky Quartz, 14.1 mm From Brazil

Smoky Quartz

8.65ct1 pc
$ 23.79
14.1 mm
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12.02 carat Sky Blue Topaz, Carved Flower loose Topaz from Brazil, Natural Gem, 17.4 x 17.3 mm, Photo A

12.02 carat Sky Blue Topaz, Carved Flower loose Topaz from Brazil, Natural Gem, 17.4 x 17.3 mm

Topaz

12.02ct1 pc
$ 92.55
17.4 x 17.3 mm
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0.34 ct Loose Orange Sapphire, 5.1 x 2.6 mm Marquise Cut From Tanzania, Photo A

0.34 ct Loose Orange Sapphire, 5.1 x 2.6 mm Marquise Cut From Tanzania

Sapphire

0.34ct total2 pcs
$ 23.39
5.1 x 2.6 mm
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2.17 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.8 x 4.9 mm, Photo A

2.17 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.8 x 4.9 mm

Topaz

2.17ct total3 pcs
$ 16.71
6.8 x 4.9 mm
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1.65 carat Pear Shape Iolite, loose Certified Iolite from Madagascar, Natural Untreated Gems, 5.9 x 3.8 mm, Photo A

1.65 carat Pear Shape Iolite, loose Certified Iolite from Madagascar, Natural Untreated Gems, 5.9 x 3.8 mm

Iolite

1.65ct total6 pcs
$ 21.78
5.9 x 3.8 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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