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29.24 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 28.5 x 19.7 mm, Photo A

29.24 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 28.5 x 19.7 mm

Obsidian

29.24ct1 pc
$ 21.93
28.5 x 19.7 mm
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4.12 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7 x 4.8 mm, Photo A

4.12 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7 x 4.8 mm

Topaz

4.12ct total4 pcs
$ 22.70
7 x 4.8 mm
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3.51 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5 mm, Photo A

3.51 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5 mm

Topaz

3.51ct total4 pcs
$ 27.03
7.1 x 5 mm
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0.32 ct Orange Sphalerite, 3.9 mm Round Cut From Spain, Photo A

0.32 ct Orange Sphalerite, 3.9 mm Round Cut From Spain

Sphalerite

0.32ct1 pc
$ 16.00
3.9 mm
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57.48 carat Oval Star Garnet, loose Certified Star Garnet from India, Natural Untreated Gem, 24.4 x 20.4 mm, Photo A

57.48 carat Oval Star Garnet, loose Certified Star Garnet from India, Natural Untreated Gem, 24.4 x 20.4 mm

Star Garnet

57.48ct1 pc
$ 189.68
24.4 x 20.4 mm
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0.71 carat Orange Sunstone, Oval loose from India, Natural Untreated Gem, 7.6 x 5.8 mm, Photo A

0.71 carat Orange Sunstone, Oval loose from India, Natural Untreated Gem, 7.6 x 5.8 mm

Sunstone

0.71ct1 pc
$ 4.97
7.6 x 5.8 mm
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3.63 ct Round Checkerboard Smoky Quartz, 8.1 mm From Brazil, Photo A

3.63 ct Round Checkerboard Smoky Quartz, 8.1 mm From Brazil

Smoky Quartz

3.63ct total2 pcs
$ 7.99
8.1 mm
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9.84 carat Pear Coral, loose Certified Coral from Indonesia, Natural Untreated Gem, 19.6 x 15 mm, Photo A

9.84 carat Pear Coral, loose Certified Coral from Indonesia, Natural Untreated Gem, 19.6 x 15 mm

Coral

9.84ct1 pc
$ 31.28
19.6 x 15 mm
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80.06 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 43.8 x 20.3 mm, Photo A

80.06 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 43.8 x 20.3 mm

Jasper

80.06ct1 pc
$ 49.31
43.8 x 20.3 mm
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2.31 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6.9 x 5 mm, Photo A

2.31 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6.9 x 5 mm

Topaz

2.31ct total2 pcs
$ 17.79
6.9 x 5 mm
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1.27 carat Blue Tanzanite, Round loose Tanzanite from Tanzania, Natural Gems, 5.1 mm, Photo A

1.27 carat Blue Tanzanite, Round loose Tanzanite from Tanzania, Natural Gems, 5.1 mm

Tanzanite

1.27ct total2 pcs
$ 11.04
5.1 mm
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21.97 ct Oval Star Ruby, 16.6 x 14.8 mm From Madagascar, Photo A

21.97 ct Oval Star Ruby, 16.6 x 14.8 mm From Madagascar

Star Ruby

21.97ct1 pc
$ 290.00
16.6 x 14.8 mm
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3.23 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 8.9 x 6.5 mm, Photo A

3.23 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 8.9 x 6.5 mm

Zircon

3.23ct1 pc
$ 76.64
8.9 x 6.5 mm
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0.99 carat Pear Shape Ruby, loose Certified Ruby from Myanmar, Natural Gem, 7.1 x 5.1 mm, Photo A
Click for Product Video (660226)

0.99 carat Pear Shape Ruby, loose Certified Ruby from Myanmar, Natural Gem, 7.1 x 5.1 mm

Ruby

0.99ct1 pc
$ 815.61
7.1 x 5.1 mm
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6.43 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gems, 15.1 x 6.8 mm, Photo A

6.43 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gems, 15.1 x 6.8 mm

Topaz

6.43ct total2 pcs
$ 49.51
15.1 x 6.8 mm
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10.45 ct Yellow Quartz, 11.9 x 11.5 mm Carved From Brazil, Photo A

10.45 ct Yellow Quartz, 11.9 x 11.5 mm Carved From Brazil

Quartz

10.45ct total2 pcs
$ 40.24
11.9 x 11.5 mm
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0.45 carat Blue Kyanite, Round loose Kyanite from Nepal, Natural Untreated Gem, 4.3 mm, Photo A

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

Kyanite

0.45ct1 pc
$ 11.25
4.3 mm
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0.87 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 11.9 x 3.9 mm, Photo A

0.87 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 11.9 x 3.9 mm

Citrine

0.87ct1 pc
$ 6.96
11.9 x 3.9 mm
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6.63 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.1 x 10.7 mm, Photo A

6.63 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.1 x 10.7 mm

Amethyst

6.63ct1 pc
$ 39.78
14.1 x 10.7 mm
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3.5 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Gems, 9.1 x 7 mm, Photo A

3.5 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Gems, 9.1 x 7 mm

Citrine

3.50ct total2 pcs
$ 19.25
9.1 x 7 mm
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0.27 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.6 x 3.5 mm, Photo A

0.27 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.6 x 3.5 mm

Emerald

0.27ct1 pc
$ 54.00
3.6 x 3.5 mm
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1.14 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gems, 5.5 x 4.6 mm, Photo A

1.14 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gems, 5.5 x 4.6 mm

Emerald

1.14ct total2 pcs
$ 91.20
5.5 x 4.6 mm
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0.53 ct Loose Violet Sapphire, 6.1 x 4.2 mm Oval Cut From Tanzania, Photo A

0.53 ct Loose Violet Sapphire, 6.1 x 4.2 mm Oval Cut From Tanzania

Sapphire

0.53ct1 pc
$ 69.96
6.1 x 4.2 mm
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7.32 ct Green Agate, 13.9 x 11.7 mm Oval Cut From India, Photo A

7.32 ct Green Agate, 13.9 x 11.7 mm Oval Cut From India

Agate

7.32ct1 pc
$ 8.05
13.9 x 11.7 mm
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5.33 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gems, 8 x 6.1 mm, Photo A

5.33 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gems, 8 x 6.1 mm

Citrine

5.33ct total4 pcs
$ 35.18
8 x 6.1 mm
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24.2 ct Oval Jasper, 24.1 x 15 mm From Indonesia, Photo A

24.2 ct Oval Jasper, 24.1 x 15 mm From Indonesia

Jasper

24.20ct total2 pcs
$ 14.28
24.1 x 15 mm
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4.13 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.2 x 4.1 mm, Photo A

4.13 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.2 x 4.1 mm

Pyrope Garnet

4.13ct total10 pcs
$ 31.80
4.2 x 4.1 mm
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1.19 ct Cushion Cut Color-Change Diaspore, 8.6 x 5.2 mm From Turkey, Photo A

1.19 ct Cushion Cut Color-Change Diaspore, 8.6 x 5.2 mm From Turkey

Color-Change Diaspore

1.19ct1 pc
$ 63.17
8.6 x 5.2 mm
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13.55 carat Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.1 x 15 mm, Photo A

13.55 carat Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.1 x 15 mm

Amethyst

13.55ct1 pc
$ 94.85
15.1 x 15 mm
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3.53 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.1 mm, Photo A

3.53 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.1 mm

Topaz

3.53ct total4 pcs
$ 27.18
7.1 x 5.1 mm
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1.16 ct Yellow Beryl, 7.9 x 6.2 mm Cushion Cut From Madagascar, Photo A

1.16 ct Yellow Beryl, 7.9 x 6.2 mm Cushion Cut From Madagascar

Beryl

1.16ct1 pc
$ 27.84
7.9 x 6.2 mm
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17.69 ct Baguette Rainbow Moonstone, 20.4 x 12.7 mm From the United States, Photo A

17.69 ct Baguette Rainbow Moonstone, 20.4 x 12.7 mm From the United States

Rainbow Moonstone

17.69ct1 pc
$ 141.52
20.4 x 12.7 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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