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Buy Oval Shape 18x13 mm Gems

(191)
Gem Type Weight Size Clarity Price Origin
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Pear Green Prehnite Gem - 16ct Carved Oval Cabochon (ID: 474443)

Oval Green Prehnite

16ct
17.5 x 13.4 mm
$ 33.68
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Green-Blue Grandidierite Gem - 10.8ct Oval Cabochon (ID: 471788)

Oval Turquoise Grandidierite

10.8ct
17.4 x 12.5 mm
$ 1,079.00
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Dark Golden Citrine Gem - 12.6ct Oval Facet (ID: 512363)

Oval Golden Citrine

12.6ct
18.1 x 13 mm
$ 63.20
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Golden Citrine Gem - 11.7ct Oval Facet (ID: 512332)

Oval Golden Citrine

11.7ct
18.1 x 13.1 mm
$ 58.40
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Dark Greenish Blue Turquoise Gem - 16.8ct Oval Cabochon (ID: 613268)

Dark Greenish Blue Turquoise

16.8ct
17.4 x 13.3 mm
$ 20.10
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Deep Golden Orange Citrine Gem - 11.8ct Oval Facet (ID: 504845)

Oval Golden Citrine

11.8ct
18.1 x 12.9 mm
$ 82.32
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Bright Gold Citrine Gem - 12.1ct Oval Facet (ID: 504867)

Oval Golden Citrine

12.1ct
18.2 x 13 mm
$ 84.56
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2 pcs
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Multicolor Fossil Coral Gem - 8.3ct Oval Cabochon (ID: 605905)

Oval Multicolor Fossil Coral

8.34 ct (total 16.68ctw)
17.6 x 12.6 mm
$ 19.68
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2 pcs
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Multicolor Pietersite Gem - 9.3ct Oval Cabochon (ID: 371715)

Oval Multicolor Pietersite

9.31 ct (total 18.62ctw)
17.9 x 13.1 mm
$ 74.48
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Black Spinel Gem - 12.3ct Oval Rose-Cut (ID: 438289)

Oval Black Spinel

12.29 ct (total 24.58ctw)
18.1 x 12.7 mm
$ 73.74
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Multicolor Labradorite Gem - 14.6ct Oval Facet (ID: 473106)

Oval Multicolor Labradorite

14.6ct
18.3 x 13.3 mm
$ 29.16
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Multicolor Pietersite Gem - 10.5ct Oval Cabochon (ID: 597013)

Oval Multicolor Pietersite

10.5ct
18.7 x 12.8 mm
$ 31.53
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Medium Golden Citrine Gem - 11.5ct Oval Facet (ID: 512357)

Oval Golden Citrine

11.5ct
18.1 x 13.1 mm
$ 57.40
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Rose Pink Rose Quartz Gem - 19.8ct Oval Cabochon (ID: 328626)

Oval Pink Rose Quartz

19.8ct
18.1 x 13.1 mm
$ 23.81
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2 pcs
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Multicolor Fossil Coral Gem - 10.3ct Oval Cabochon (ID: 482204)

Oval Multicolor Fossil Coral

10.27 ct (total 20.54ctw)
18.1 x 12.8 mm
$ 20.13
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Rose Pink Rose Quartz Gem - 20.1ct Oval Cabochon (ID: 328625)

Oval Pink Rose Quartz

20.1ct
18.2 x 13.2 mm
$ 24.10
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Golden Orange Citrine Gem - 12.5ct Oval Facet (ID: 512889)

Oval Golden Citrine

12.5ct
18.1 x 13.1 mm
$ 62.35
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Multicolor Jasper Gem - 9.7ct Oval Cabochon (ID: 364118)

Oval Multicolor Jasper

9.7ct
18.1 x 13.2 mm
$ 19.46
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Dark Orange-Gold Citrine Gem - 11.5ct Oval Facet (ID: 512335)

Oval Golden Citrine

11.5ct
18.2 x 13 mm
$ 57.30
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Multicolor Rhodochrosite Gem - 15.5ct Oval Cabochon (ID: 392138)

Oval Multicolor Rhodochrosite

15.5ct
18.2 x 13.1 mm
$ 31.06
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Medium Golden Citrine Gem - 10.6ct Oval Facet (ID: 504865)

Oval Golden Citrine

10.6ct
18 x 13.1 mm
$ 73.99
Item in Stock
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Oval Shape 18x13 mm Gems

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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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart