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You Selected (228): Oval Shape 12x10 mm Gems Clear All
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ID: 4396871 pcs
thumb image of 6ct Oval Facet Blue Sapphire (ID: 439687)
5.96 ct Sapphire
12.1 x 9.9 mm
$ 16688.00
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ID: 4166501 pcs
thumb image of 7.6ct Oval Cabochon Cream Star Moonstone (ID: 416650)
7.61 ct Star Moonstone
12 x 10.2 mm
$ 30.44
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ID: 2173211 pcs
thumb image of 4.8ct Oval Checkerboard Green Prehnite (ID: 217321)
4.78 ct Prehnite
11.9 x 9.9 mm
$ 21.51
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ID: 4904681 pcs
thumb image of 3ct Oval Cabochon Multicolor Black Opal (ID: 490468)
2.99 ct Black Opal
11.8 x 9.8 mm
$ 45.00
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ID: 4827831 pcs
thumb image of 6.6ct Oval Cabochon Gray Blue Sheen Labradorite (ID: 482783)
6.64 ct Labradorite
12 x 10.1 mm
$ 7.37
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ID: 4186831 pcs
thumb image of 5.5ct Oval Cabochon Cream Star Moonstone (ID: 418683)
5.45 ct Star Moonstone
11.8 x 10 mm
$ 21.80
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ID: 4171871 pcs
thumb image of 5.3ct Oval Facet Golden Green Tourmaline (ID: 417187)
5.30 ct Tourmaline
12.2 x 9.8 mm
$ 795.00
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ID: 4686671 pcs
thumb image of 8.5ct Oval Cabochon Purplish Red Star Ruby (ID: 468667)
8.51 ct Star Ruby
11.8 x 9.9 mm
$ 85.10
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ID: 4829622 pcs
thumb image of 11.9ct Oval Facet Purplish Pink Mystic Topaz (ID: 482962)
11.86 ct Mystic Topaz
12.1 x 10.1 mm
$ 94.88
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ID: 4191481 pcs
thumb image of 6.3ct Oval Cabochon Cream Peach Star Moonstone (ID: 419148)
6.29 ct Star Moonstone
12.2 x 10.2 mm
$ 25.16
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ID: 4829491 pcs
thumb image of 5.8ct Oval Facet Purplish Pink Mystic Topaz (ID: 482949)
5.77 ct Mystic Topaz
12 x 9.9 mm
$ 46.16
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ID: 4829632 pcs
thumb image of 11.4ct Oval Facet Purplish Pink Mystic Topaz (ID: 482963)
11.36 ct Mystic Topaz
12.1 x 10 mm
$ 90.88
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ID: 4830752 pcs
thumb image of 11.3ct Oval Concave Cut Purplish Pink Mystic Topaz (ID: 483075)
11.32 ct Mystic Topaz
12.1 x 10.2 mm
$ 90.56
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ID: 4830452 pcs
thumb image of 11.3ct Oval Facet Purplish Pink Mystic Topaz (ID: 483045)
11.28 ct Mystic Topaz
12 x 10.1 mm
$ 90.24
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ID: 4494062 pcs
thumb image of 12.5ct Oval Cabochon Multicolor Rhodochrosite (ID: 449406)
12.47 ct Rhodochrosite
12 x 10.2 mm
$ 24.94
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ID: 4829712 pcs
thumb image of 11.3ct Oval Facet Purplish Pink Mystic Topaz (ID: 482971)
11.27 ct Mystic Topaz
12.1 x 10.2 mm
$ 90.16
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ID: 4712131 pcs
thumb image of 6.1ct Oval Cabochon Golden-Brown Star Sunstone (ID: 471213)
6.12 ct Star Sunstone
12.2 x 9.9 mm
$ 28.34
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ID: 4798031 pcs
thumb image of 6.7ct Oval Portuguese-Cut Lively Green Peridot (ID: 479803)
6.67 ct Peridot
12.2 x 9.9 mm
$ 426.88
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ID: 4863181 pcs
thumb image of 5.9ct Oval Cabochon Golden-Brown Star Sunstone (ID: 486318)
5.86 ct Star Sunstone
12.1 x 10 mm
$ 32.41
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ID: 4830532 pcs
thumb image of 11.2ct Oval Facet Purplish Pink Mystic Topaz (ID: 483053)
11.23 ct Mystic Topaz
12.1 x 9.9 mm
$ 89.84
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ID: 4493792 pcs
thumb image of 12.7ct Oval Cabochon Multicolor Rhodochrosite (ID: 449379)
12.72 ct Rhodochrosite
12.2 x 10 mm
$ 25.44
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Oval Shape 12x10 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 12 x 10 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