Calibrated 20 x 15 mm Oval Shape Natural Loose Gemstones: GemSelect

Some people by gems by color or pricze, 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 20 x 15 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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The gem stone always has a great selection of beautiful stones. The calibrated stone fit my ring perfectly. Thank you gem select !

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Overall Rating -> 10

I had a great time searching all the lovely stones. This is my first precious loose stone purchase for my own work. I chose sapphire, and found some lovely briolettes. I wanted 3, but this set of 4 was perfect. Everything was quick and easy, and I'm excited.

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It was easy to find the color gem I desired and checkout was simple as well. Very excited to receive my gemstone.

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Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

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Gemstones A-Z

Buy Oval Shape 20x15 mm Gems

0.85 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 7.2 x 5.2 mm

3.07 ct Oval Prehnite, 8.7 x 8 mm From South Africa

7.03 carat Pear Coral, loose Certified Coral from Indonesia, Natural Untreated Gem, 17.4 x 12.1 mm

4.74 carat London Blue Topaz, Heart loose Topaz from Brazil, Natural Gem, 10.2 x 10 mm

4.97 ct Yellow Agate, 12.2 x 10.5 mm Oval Cut From India

0.99 ct Blue Kyanite, 7.2 x 5.2 mm Oval Cut From Nepal

1.15 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 6.9 x 5.1 mm

6.43 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gems, 15.1 x 6.8 mm

77.86 ct Cushion Jasper, 37.5 x 26 mm From Indonesia

13.46 ct Black Spinel, 19.8 x 10.1 mm Baguette Rose Cut From Thailand

4.87 ct Oval Prehnite, 8.7 x 7.8 mm From South Africa

0.46 carat Green Sapphire, Cushion loose Sapphire from Tanzania, Natural Gem, 4.2 x 4.1 mm

0.99 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 7.2 x 5.1 mm

0.94 carat Pink Tourmaline, Round Cabochon loose from Mozambique, Natural Untreated Gem, 5.9 mm

2.63 ct Yellow Andesine Labradorite, 10.1 x 8.1 mm Oval Cut From Congo

1.1 ct Marquise Cut Peridot, 8 x 4.1 mm From China

3.66 ct Loose Baguette Labradorite, 9 x 7.2 mm From Madagascar

14.7 ct Round Pietersite, 14.4 mm From Namibia

58.67 ct Loose Oval Bloodstone, 30.1 x 23.2 mm From Madagascar

1.84 ct Yellow Beryl, 9 x 7 mm Cushion Cut From Brazil

3.61 ct Round Checkerboard Prehnite, 8 mm From South Africa

8.35 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6 x 4.1 mm

1.79 carat Orange Hessonite Garnet, Round loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.9 mm

0.65 ct Loose Yellow Sapphire, 4.4 x 4.3 mm Square Cut From Tanzania

2.42 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 9.6 x 5.9 mm

4.73 ct Yellow Apatite, 12.2 x 9.6 mm Oval Cut From Madagascar

1.55 ct Loose Round Cut Lapis Lazuli, 6 mm From Afghanistan

9.77 ct Green Amazonite, 9.1 mm Round Cut From Madagascar

6.41 carat Swiss Blue Topaz, Round loose Topaz from Brazil, Natural Gems, 9.2 mm

1.43 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gems, 5 mm

2.99 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.2 x 10.1 mm

0.91 ct Cushion Cut Color-Change Diaspore, 7.4 x 4.7 mm From Turkey

Gemstone Information

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