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27.45 carat Swiss Blue Topaz, Round loose Topaz from Brazil, Natural Gem, 18.2 mm, Photo A

27.45 carat Swiss Blue Topaz, Round loose Topaz from Brazil, Natural Gem, 18.2 mm

Topaz

27.45ct1 pc
$ 247.05
18.2 mm
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11.36 carat Round Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 8.6 mm, Photo A
Click for Product Video (466391)

11.36 carat Round Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 8.6 mm

Opal

11.36ct total6 pcs
$ 349.89
8.6 mm
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7.48 ct Round Rutile Quartz, 10.2 mm From India, Photo A

7.48 ct Round Rutile Quartz, 10.2 mm From India

Rutile Quartz

7.48ct total2 pcs
$ 22.22
10.2 mm
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1.32 ct Round Sillimanite Cat's Eye, 6.2 mm From Madagascar, Photo A

1.32 ct Round Sillimanite Cat's Eye, 6.2 mm From Madagascar

Sillimanite Cat's Eye

1.32ct1 pc
$ 4.14
6.2 mm
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19.06 ct Round Labradorite, 18.8 mm From Madagascar, Photo A

19.06 ct Round Labradorite, 18.8 mm From Madagascar

Labradorite

19.06ct1 pc
$ 46.51
18.8 mm
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2.34 ct Round Cat's Eye Scapolite, 9.1 mm From Madagascar, Photo A

2.34 ct Round Cat's Eye Scapolite, 9.1 mm From Madagascar

Cat's Eye Scapolite

2.34ct1 pc
$ 12.87
9.1 mm
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7.58 ct Round Cut Smoky Quartz, 12.9 mm From Brazil, Photo A

7.58 ct Round Cut Smoky Quartz, 12.9 mm From Brazil

Smoky Quartz

7.58ct1 pc
$ 12.51
12.9 mm
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0.46 carat Orange Spessartite Garnet, Round loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 4.5 mm, Photo A

0.46 carat Orange Spessartite Garnet, Round loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 4.5 mm

Spessartite Garnet

0.46ct1 pc
$ 15.64
4.5 mm
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0.07 ct Blue Diamond, 2.8 mm Diamond Cut From India, Photo A

0.07 ct Blue Diamond, 2.8 mm Diamond Cut From India

Diamond

0.07ct1 pc
$ 70.00
2.8 mm
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0.05 ct Blue Diamond, 2.3 mm Diamond Cut From India, Photo A

0.05 ct Blue Diamond, 2.3 mm Diamond Cut From India

Diamond

0.05ct1 pc
$ 50.00
2.3 mm
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0.62 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gem, 5.1 mm, Photo A

0.62 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gem, 5.1 mm

Sapphire

0.62ct1 pc
$ 370.55
5.1 mm
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0.41 carat Pink Morganite, Round loose Morganite from Afghanistan, Natural Untreated Gem, 5.2 mm, Photo A

0.41 carat Pink Morganite, Round loose Morganite from Afghanistan, Natural Untreated Gem, 5.2 mm

Morganite

0.41ct1 pc
$ 18.45
5.2 mm
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6.22 ct White Moonstone, 9 mm Round Cut From India, Photo A

6.22 ct White Moonstone, 9 mm Round Cut From India

Moonstone

6.22ct total2 pcs
$ 17.11
9 mm
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0.85 ct Loose Round Cut Lapis Lazuli, 6.1 mm From Afghanistan, Photo A

0.85 ct Loose Round Cut Lapis Lazuli, 6.1 mm From Afghanistan

Lapis Lazuli

0.85ct1 pc
$ 1.37
6.1 mm
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14.77 ct Black Spinel, 12 mm Round Rose Cut From Thailand, Photo A

14.77 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Spinel

14.77ct total2 pcs
$ 46.15
12 mm
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0.26 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 4.1 mm, Photo A

0.26 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 4.1 mm

Ruby

0.26ct1 pc
$ 72.80
4.1 mm
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0.07 ct Blue Diamond, 2.5 mm Diamond Cut From India, Photo A

0.07 ct Blue Diamond, 2.5 mm Diamond Cut From India

Diamond

0.07ct1 pc
$ 83.40
2.5 mm
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0.05 ct Black Diamond, 2.2 mm Diamond Cut From India, Photo A

0.05 ct Black Diamond, 2.2 mm Diamond Cut From India

Diamond

0.05ct1 pc
$ 14.59
2.2 mm
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0.98 carat Red Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gem, 6.1 mm, Photo A

0.98 carat Red Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gem, 6.1 mm

Tourmaline

0.98ct1 pc
$ 16.31
6.1 mm
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3.55 carat Pink Topaz, Round loose Topaz from Brazil, Natural Gem, 9.1 mm, Photo A

3.55 carat Pink Topaz, Round loose Topaz from Brazil, Natural Gem, 9.1 mm

Topaz

3.55ct1 pc
$ 28.40
9.1 mm
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3.59 carat White Zircon, Round loose Zircon from Cambodia, Natural Gems, 6.7 mm, Photo A

3.59 carat White Zircon, Round loose Zircon from Cambodia, Natural Gems, 6.7 mm

Zircon

3.59ct total2 pcs
$ 98.41
6.7 mm
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3.61 ct Round Cut Strawberry Quartz, 9.8 mm From Russia, Photo A

3.61 ct Round Cut Strawberry Quartz, 9.8 mm From Russia

Strawberry Quartz

3.61ct1 pc
$ 21.85
9.8 mm
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5.42 ct Pink Sunstone, 9.2 mm Round Cut From India, Photo A

5.42 ct Pink Sunstone, 9.2 mm Round Cut From India

Sunstone

5.42ct total2 pcs
$ 32.20
9.2 mm
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7.01 ct Black Spinel, 9.1 mm Round Rose Cut From Thailand, Photo A

7.01 ct Black Spinel, 9.1 mm Round Rose Cut From Thailand

Spinel

7.01ct total2 pcs
$ 30.84
9.1 mm
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0.79 ct Orange Sphalerite, 5.3 mm Round Cut From Spain, Photo A

0.79 ct Orange Sphalerite, 5.3 mm Round Cut From Spain

Sphalerite

0.79ct1 pc
$ 39.50
5.3 mm
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3.34 ct Round Checkerboard Smoky Quartz, 7.9 mm From Brazil, Photo A

3.34 ct Round Checkerboard Smoky Quartz, 7.9 mm From Brazil

Smoky Quartz

3.34ct total2 pcs
$ 7.35
7.9 mm
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1.49 ct Loose Round Pietersite, 8.3 mm From Namibia, Photo A

1.49 ct Loose Round Pietersite, 8.3 mm From Namibia

Pietersite

1.49ct1 pc
$ 3.62
8.3 mm
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3.07 ct Loose Yellow Sapphire, 5.1 mm Round Cut From Tanzania, Photo A

3.07 ct Loose Yellow Sapphire, 5.1 mm Round Cut From Tanzania

Sapphire

3.07ct total4 pcs
$ 169.63
5.1 mm
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1.63 carat Round Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4 mm, Photo A

1.63 carat Round Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4 mm

Demantoid Garnet

1.63ct total5 pcs
$ 178.85
4 mm
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11.67 ct Round Pietersite, 17.8 mm From Namibia, Photo A

11.67 ct Round Pietersite, 17.8 mm From Namibia

Pietersite

11.67ct1 pc
$ 27.42
17.8 mm
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1.43 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gems, 5 mm, Photo A

1.43 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gems, 5 mm

Zircon

1.43ct total2 pcs
$ 37.75
5 mm
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10.76 ct Orange Moonstone, 11.1 mm Round Cut From India, Photo A

10.76 ct Orange Moonstone, 11.1 mm Round Cut From India

Moonstone

10.76ct total2 pcs
$ 21.63
11.1 mm
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Photos are of Actual Products for Sale
When it comes to gemstone shapes, round gems are the most popular and versatile. Unlike oval gems, round gemstones are not cut to maximize carat weight, so more skill is often required by the cutter to bring out the color and brilliance in a gem. Many people confuse shape with gemstone cut, which isn't all that surprising. Looking at our selection of round-shaped gemstones, you'll notice a number of different round-cut stones; some are cut en cabochon, with no facets at all, while others are faceted in the traditional way, either with step-cut faceting or with more angular 'brilliant-cut' faceting. Other round gems may be given an unusual or mixed gem cut, such as concave-style cut, checkerboard cuts, or Portuguese-style cuts. Round rose-cut gems and round buff-top gems can also be found. Thus, it is easy to see why shape and cut are often confused, because there is one shape (round) with multiple cutting styles. Although many describe their gemstones using terms like 'round-cut', it isn't always the best description since there are many cutting styles; technically gems should be described as 'round Portuguese-cut', 'round step-cut', or 'round cabochon' for example.

The meaning of shape should be fairly obvious, which is the face-up outline of the stone, whether it is round, oval, square, rectangular, pear, marquise or trillion. Round gemstones should be symmetrical with a perfectly circular outline. However, in practice, a good percentage of gemstones are native-cut without the use of precision lasers and other advanced lapidary tools, so many round gems are not actually perfect circles and are rather better described as being near-round. This is why you may find that many still use three measurements for round gems. Most gemstone dealers will use only one diameter measurement and the depth (in millimeters), but to be more accurate, some dealers may advertise their items using the two diameter measurements, with one measurement at its minimum and another at its maximum, followed by the depth in millimeters. This type of measuring is more often used for diamonds rather than colored stones.

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