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Buy Oval Shape 18x13 mm Gems

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Oval Shape 18x13 mm Gems Weight Oval Shape 18x13 mm Gems Size Oval Shape 18x13 mm Gems Clarity Oval Shape 18x13 mm Gems Price Oval Shape 18x13 mm Gems Origin
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1.68 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7.1 x 5.2 mm, Photo A

1.68 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7.1 x 5.2 mm

Pyrope Garnet

1.68ct total2 pcs
$ 12.94
7.1 x 5.2 mm
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2.2 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.7 x 7.1 mm, Photo A

2.2 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.7 x 7.1 mm

Hessonite Garnet

2.20ct1 pc
$ 44.00
8.7 x 7.1 mm
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13.47 ct Cushion Rose Cut Lapis Lazuli, 19.6 x 14.8 mm From Afghanistan, Photo A

13.47 ct Cushion Rose Cut Lapis Lazuli, 19.6 x 14.8 mm From Afghanistan

Lapis Lazuli

13.47ct1 pc
$ 23.57
19.6 x 14.8 mm
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29.19 ct Amethyst Geode Slice, 26.3 x 23.9 mm From Brazil, Photo A

29.19 ct Amethyst Geode Slice, 26.3 x 23.9 mm From Brazil

Amethyst Geode Slice

29.19ct1 pc
$ 31.23
26.3 x 23.9 mm
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0.89 carat Heart Buff Top Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 6.2 x 6.1 mm, Photo A

0.89 carat Heart Buff Top Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 6.2 x 6.1 mm

Amethyst

0.89ct1 pc
$ 6.23
6.2 x 6.1 mm
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4.41 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.1 x 5.1 mm, Photo A

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

Pyrope Garnet

4.41ct total4 pcs
$ 38.81
10.1 x 5.1 mm
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1.54 carat Pear Shape Rainbow Moonstone, loose Certified Rainbow Moonstone from India, Natural Untreated Gems, 5.1 x 5 mm, Photo A

1.54 carat Pear Shape Rainbow Moonstone, loose Certified Rainbow Moonstone from India, Natural Untreated Gems, 5.1 x 5 mm

Rainbow Moonstone

1.54ct total4 pcs
$ 28.80
5.1 x 5 mm
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2.72 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7 mm, Photo A

2.72 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7 mm

Topaz

2.72ct total2 pcs
$ 20.94
7.1 x 7 mm
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6.2 ct White Moonstone, 11.1 x 9.1 mm Oval Cut From India, Photo A

6.2 ct White Moonstone, 11.1 x 9.1 mm Oval Cut From India

Moonstone

6.20ct total2 pcs
$ 17.05
11.1 x 9.1 mm
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1.55 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10.9 x 4.8 mm, Photo A

1.55 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10.9 x 4.8 mm

Tourmaline

1.55ct1 pc
$ 117.65
10.9 x 4.8 mm
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7.48 carat Pear Boulder Opal, loose Certified Boulder Opal from Australia, Natural Untreated Gem, 16.5 x 11.8 mm, Photo A

7.48 carat Pear Boulder Opal, loose Certified Boulder Opal from Australia, Natural Untreated Gem, 16.5 x 11.8 mm

Boulder Opal

7.48ct1 pc
$ 52.36
16.5 x 11.8 mm
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1.21 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 10.3 x 5.9 mm, Photo A

1.21 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 10.3 x 5.9 mm

Morganite

1.21ct1 pc
$ 93.17
10.3 x 5.9 mm
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0.77 ct Blue Green Apatite, 6.9 x 5.1 mm Oval Cut From Madagascar, Photo A

0.77 ct Blue Green Apatite, 6.9 x 5.1 mm Oval Cut From Madagascar

Apatite

0.77ct1 pc
$ 27.72
6.9 x 5.1 mm
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11.84 ct Carved Chalcedony, 16.7 x 16.5 mm From Brazil, Photo A

11.84 ct Carved Chalcedony, 16.7 x 16.5 mm From Brazil

Chalcedony

11.84ct1 pc
$ 13.02
16.7 x 16.5 mm
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32.77 ct Fancy Charoite, 22.5 x 20 mm From Russia, Photo A

32.77 ct Fancy Charoite, 22.5 x 20 mm From Russia

Charoite

32.77ct1 pc
$ 54.08
22.5 x 20 mm
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0.69 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 7 x 5 mm, Photo A

0.69 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 7 x 5 mm

Topaz

0.69ct1 pc
$ 5.52
7 x 5 mm
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16.31 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 29.3 x 12.3 mm, Photo A
Click for Product Video (523398)

16.31 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 29.3 x 12.3 mm

Ammolite

16.31ct1 pc
$ 358.82
29.3 x 12.3 mm
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8.84 ct Cushion Tiger's Eye, 14.1 x 11.9 mm From Thailand, Photo A

8.84 ct Cushion Tiger's Eye, 14.1 x 11.9 mm From Thailand

Tiger's Eye

8.84ct1 pc
$ 8.84
14.1 x 11.9 mm
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5.54 ct Oval Prehnite, 7.5 x 6.4 mm From South Africa, Photo A

5.54 ct Oval Prehnite, 7.5 x 6.4 mm From South Africa

Prehnite

5.54ct total4 pcs
$ 30.47
7.5 x 6.4 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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3.38 ct Round Checkerboard Smoky Quartz, 8 mm From Brazil, Photo A

3.38 ct Round Checkerboard Smoky Quartz, 8 mm From Brazil

Smoky Quartz

3.38ct total2 pcs
$ 26.03
8 mm
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36.69 ct Oval Rose Quartz, 25 x 16 mm From South Africa, Photo A

36.69 ct Oval Rose Quartz, 25 x 16 mm From South Africa

Rose Quartz

36.69ct1 pc
$ 52.47
25 x 16 mm
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1.13 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7 x 5 mm, Photo A

1.13 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7 x 5 mm

Hessonite Garnet

1.13ct1 pc
$ 20.34
7 x 5 mm
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3.02 ct Loose Baguette Labradorite, 8.9 x 7.2 mm From Madagascar, Photo A

3.02 ct Loose Baguette Labradorite, 8.9 x 7.2 mm From Madagascar

Labradorite

3.02ct1 pc
$ 4.17
8.9 x 7.2 mm
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1.43 carat Violet Tanzanite, Round loose Tanzanite from Tanzania, Natural Gem, 7.1 mm, Photo A

1.43 carat Violet Tanzanite, Round loose Tanzanite from Tanzania, Natural Gem, 7.1 mm

Tanzanite

1.43ct1 pc
$ 11.44
7.1 mm
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24.02 carat Bi-color Ametrine, Pear Shape loose Ametrine from Brazil, Natural Untreated Gem, 23.2 x 18.9 mm, Photo A

24.02 carat Bi-color Ametrine, Pear Shape loose Ametrine from Brazil, Natural Untreated Gem, 23.2 x 18.9 mm

Ametrine

24.02ct1 pc
$ 132.11
23.2 x 18.9 mm
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55.96 ct Oval Jasper, 43.2 x 22.6 mm From Indonesia, Photo A

55.96 ct Oval Jasper, 43.2 x 22.6 mm From Indonesia

Jasper

55.96ct1 pc
$ 61.56
43.2 x 22.6 mm
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12.15 carat Swiss Blue Topaz, Ball loose Topaz from Brazil, Natural Gems, 8.6 mm, Photo A

12.15 carat Swiss Blue Topaz, Ball loose Topaz from Brazil, Natural Gems, 8.6 mm

Topaz

12.15ct total2 pcs
$ 108.21
8.6 mm
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0.55 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.2 x 4.1 mm, Photo A

0.55 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.2 x 4.1 mm

Emerald

0.55ct1 pc
$ 60.50
6.2 x 4.1 mm
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2.41 ct Loose Orange Moonstone, 8.2 x 8.1 mm Cushion Cut From India, Photo A

2.41 ct Loose Orange Moonstone, 8.2 x 8.1 mm Cushion Cut From India

Moonstone

2.41ct1 pc
$ 4.82
8.2 x 8.1 mm
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3.32 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5.1 mm, Photo A

3.32 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5.1 mm

Topaz

3.32ct total4 pcs
$ 25.56
7 x 5.1 mm
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3.03 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.8 x 8.7 mm, Photo A

3.03 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.8 x 8.7 mm

Citrine

3.03ct1 pc
$ 21.21
10.8 x 8.7 mm
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Photos are of Actual Products for Sale

Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated oval shapes, facet cut and cabochon gems available now in 18 x13 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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