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Buy Oval Shape 18x13 mm Gems

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (221): Oval Shape 18x13 mm Gems Clear All
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Green Tourmaline Gem - 14ct Oval Facet (ID: 412591)

Oval Green Tourmaline

14ct
18.5 x 13.3 mm
$ 770.55
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Yellow Golden Citrine Gem - 11.7ct Oval Facet (ID: 512366)

Oval Yellow Citrine

11.7ct
18 x 13 mm
$ 58.70
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2 pcs
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Multicolor Jasper Gem - 12.6ct Oval Cabochon (ID: 488554)

Oval Multicolor Jasper

12.56 ct (total 25.12ctw)
18.1 x 13.1 mm
$ 14.07
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Red Strawberry Quartz Gem - 13.6ct Oval Facet (ID: 472287)

Oval Red Strawberry Quartz

13.6ct
17.8 x 13.4 mm
$ 95.20
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Red Strawberry Quartz Gem - 10.4ct Oval Facet (ID: 471617)

Oval Red Strawberry Quartz

10.4ct
17.5 x 13.3 mm
$ 72.87
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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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2 pcs
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Green Seraphinite Gem - 9.6ct Oval Cabochon (ID: 328645)

Oval Green Seraphinite

9.56 ct (total 19.12ctw)
18.1 x 13.2 mm
$ 34.42
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Black Spinel Gem - 13.4ct Oval Rose-Cut (ID: 438290)

Oval Black Spinel

13.44 ct (total 26.87ctw)
17.9 x 13 mm
$ 80.61
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Multicolor Opal Gem - 9.7ct Oval Cabochon (ID: 462196)

Oval Multicolor Opal

9.7ct
18.4 x 13.5 mm
$ 388.91
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Bluish Green Fluorite Gem - 12.1ct Oval Sugarloaf Cabochon (ID: 472027)

Oval Green Fluorite

12.1ct
18.1 x 12.9 mm
$ 12.05
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Light Blue Aquamarine Gem - 13.3ct Oval Cabochon (ID: 469725)

Oval Blue Aquamarine

13.3ct
17.8 x 13.1 mm
$ 112.11
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Multicolor Pietersite Gem - 7.7ct Oval Cabochon (ID: 347717)

Oval Multicolor Pietersite

7.7ct
18.1 x 13.2 mm
$ 30.72
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Pink Rose Quartz Gem - 15.6ct Oval Cabochon (ID: 334244)

Oval Pink Rose Quartz

15.6ct
17.9 x 13.1 mm
$ 19.01
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Multicolor Jasper Gem - 11.8ct Oval Cabochon (ID: 476748)

Oval Multicolor Jasper

11.8ct
18 x 13.2 mm
$ 7.52
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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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Multicolor Cat's Eye Opal Gem - 10.7ct Oval Cabochon (ID: 494492)

Oval Multicolor Cat's Eye Opal

10.7ct
18.5 x 12.9 mm
$ 21.46
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Multicolor Pietersite Gem - 8.1ct Oval Cabochon (ID: 371838)

Oval Multicolor Pietersite

8.13 ct (total 16.26ctw)
18 x 13.2 mm
$ 65.04
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Multicolor Jasper Gem - 12.3ct Oval Cabochon (ID: 476698)

Oval Multicolor Jasper

12.3ct
18 x 13.1 mm
$ 7.86
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Multicolor Ruby-Zoisite Gem - 19.8ct Oval Cabochon (ID: 266276)

Oval Multicolor Ruby-Zoisite

19.8ct
18.2 x 12.9 mm
$ 54.31
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2 pcs
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Multicolor Jasper Gem - 11.1ct Oval Cabochon (ID: 370763)

Oval Multicolor Jasper

11.09 ct (total 22.17ctw)
18.1 x 13.1 mm
$ 22.17
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Click for Product Video (471788)
Bluish Green Grandidierite Gem - 10.8ct Oval Cabochon (ID: 471788)

Oval Green Grandidierite

10.8ct
17.4 x 12.5 mm
$ 3,237.00
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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.

Certified Customer Reviews
Overall Rating -> 9 star ratings
Easy to shop through gemselect and will look there for future purchases.
Posted By Childcapo in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
good value
Posted By Don in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
It was super easy to browse all the gemstones and find exactly what you wanted. The prices were great and the checkout process was smooth. Seems like a great site, will definitely come back to find more in the future.
Posted By JMWatch Guy in February, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
Ive always been pleased with quality and truth of gems rating I am a gemmologist and really like the descriptions as well . i.e cut, colour and quality Sometimes Ill choose GemSelect rather than a local wholesaler because of my regard for their quality and truth
Posted By Mango in February, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
I will continue to utilize gemselect in my business as a jeweler.
Posted By Julie in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Very good selection, easy to navigate site and very reasonable prices. I look forward to receiving the gems and if they are everything they appeared to be I will be extremely happy. Definitely likely to purchase from this site again.
Posted By Anthony in January, 2019
Source: Bizrate
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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