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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (219): Oval Shape 16x12 mm Gems Clear All
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10ct Oval Checkerboard Green Prehnite Gem (ID: 225120)
9.97 ct Prehnite
15.9 x 12.1 mm
$ 44.86
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10.3ct Oval Checkerboard Green Prehnite Gem (ID: 218781)
10.27 ct Prehnite
16 x 11.9 mm
$ 47.74
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9.4ct Oval Checkerboard Green Prehnite Gem (ID: 227997)
9.41 ct Prehnite
16 x 11.9 mm
$ 42.34
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14.8ct Oval Cabochon Blue Lapis Lazuli Gem (ID: 503300)
14.75 ct Lapis Lazuli
16 x 12.1 mm
$ 23.75
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11ct Oval Concave Cut Purplish Pink Mystic Topaz Gem (ID: 483020)
10.95 ct Mystic Topaz
16.2 x 12.2 mm
$ 87.60
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11.8ct Oval Cabochon Blue Lapis Lazuli Gem (ID: 503277)
11.84 ct Lapis Lazuli
16.1 x 12.2 mm
$ 19.06
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11.1ct Oval Concave Cut Purplish Pink Mystic Topaz Gem (ID: 483034)
11.07 ct Mystic Topaz
16 x 12.2 mm
$ 88.56
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9.8ct Oval Checkerboard Green Prehnite Gem (ID: 219853)
9.84 ct Prehnite
15.9 x 12 mm
$ 44.28
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10.5ct Oval Facet Violet Blue Tanzanite Gem (ID: 378198)
10.52 ct Tanzanite
16.4 x 11.6 mm
$ 5,260.50
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8.1ct Oval Cabochon Multicolor Opal Gem (ID: 465194)
8.06 ct Opal
15.7 x 12.2 mm
$ 328.20
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9.8ct Oval Rose-Cut Black Spinel Gem (ID: 426614)
9.80 ct (total 19.59ctw) Spinel
16.2 x 12.1 mm
$ 68.56
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13.6ct Oval Cabochon Blue Lapis Lazuli Gem (ID: 499168)
13.63 ct (total 27.26ctw) Lapis Lazuli
15.9 x 12.2 mm
$ 42.80
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11ct Oval Cabochon Champagne Andesine Labradorite Gem (ID: 381449)
10.97 ct Andesine Labradorite
16.1 x 11.7 mm
$ 76.79
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8.9ct Oval Cabochon Green Serpentine Gem (ID: 469476)
8.87 ct Serpentine
15.5 x 12 mm
$ 18.63
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15.5ct Oval Cabochon Blue Lapis Lazuli Gem (ID: 499152)
15.50 ct Lapis Lazuli
16.5 x 12.4 mm
$ 24.34
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9.1ct Oval Cabochon Blue Lapis Lazuli Gem (ID: 503278)
9.10 ct Lapis Lazuli
16.1 x 11.8 mm
$ 14.65
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16.1ct Oval Facet Pink Kunzite Gem (ID: 438047)
16.14 ct Kunzite
16.6 x 12 mm
$ 322.80
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8.7ct Oval Cabochon Green Serpentine Gem (ID: 469774)
8.66 ct Serpentine
16.2 x 12.1 mm
$ 18.19
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2 pcs
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14.7ct Oval Cabochon Blue Lapis Lazuli Gem (ID: 484618)
14.72 ct (total 29.43ctw) Lapis Lazuli
16.3 x 12.4 mm
$ 29.43
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9.8ct Oval Facet Spotted Green Bloodstone Gem (ID: 482764)
9.75 ct Bloodstone
15.7 x 12.4 mm
$ 17.55
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8.7ct Oval Cabochon Green Serpentine Gem (ID: 469595)
8.65 ct Serpentine
16.1 x 12.1 mm
$ 17.96
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Oval Shape 16x12 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 16 x 12 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 -> 10 star ratings
The site had so many different stones and they were very affordably priced
Posted By Manimal in December, 2018
Source: Bizrate
Overall Rating -> 9 star ratings
Good stones and easy to use website
Posted By Wilsondesigns in December, 2018
Source: Bizrate
Overall Rating -> 9 star ratings
All is good
Posted By T in December, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
nice collection of jewels at a fair price
Posted By Bob in December, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
The website is easy to use, and there is a wonderful selection of gem stones to choose from. The prices are reasonable.
Posted By LoveGems in December, 2018
Source: Bizrate
Overall Rating -> 9 star ratings
simple, clear, well organized site
Posted By Lleb in December, 2018
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