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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making my own jewelry for my birth stone

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LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

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I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

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Gemstones A-Z

Buy Oval Shape 20x15 mm Gems

18.41 ct Baguette Tiger's Eye, 15.9 x 11.8 mm From Thailand

5.53 ct Oval Tiger's Eye, 14.1 x 10.1 mm From Thailand

1.52 ct Oval Cut Kornerupine, 6.2 x 4.3 mm From Sri Lanka

5.88 ct Asscher Cut Rose Quartz, 11 x 11 mm From South Africa

1.67 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7.9 x 5.2 mm

28.21 ct Oval Bloodstone, 34.9 x 22 mm From Madagascar

6.8 ct Oval Star Ruby, 12.3 x 9.7 mm From Madagascar

4.45 ct Oval Smoky Quartz, 7.8 x 5.7 mm From Brazil

7.69 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 12.2 x 11.5 mm

3.92 ct Green Agate, 19.8 x 9.7 mm Carved From India

5.79 ct Oval Cut Strawberry Quartz, 13.9 x 10 mm From Russia

9.62 ct Oval Cut Strawberry Quartz, 12.1 x 10.1 mm From Russia

2.3 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 9 x 8.8 mm

0.36 ct Oval Chrysoberyl Cat's Eye, 3.9 x 3.8 mm From Sri Lanka

1.55 ct Oval Cut Fire Opal, 10.2 x 7.9 mm From Mexico

1.77 ct Oval Cut Peridot, 7 x 5 mm From China

34.49 ct Octagon / Emerald Cut Lapis Lazuli, 25.8 x 15 mm From Afghanistan

1.52 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gems, 6.3 x 5.3 mm

4.83 ct Brown Moonstone, 10.7 x 10.5 mm Carved From India

0.9 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 5.7 mm

7.16 ct Green Jadeite, 22.1 x 10.3 mm Marquise Cut From Myanmar

1.2 carat Orange Sunstone, Oval loose Sunstone from India, Natural Untreated Gem, 8.1 x 6.2 mm

27.98 ct Cushion Fossil Coral, 18.7 x 13.2 mm From Indonesia

3.97 ct Odd Shaped Druzy Variscite, 12.2 x 11.2 mm From China

3.85 ct Round Checkerboard Smoky Quartz, 7.9 mm From Brazil

1 ct Oval Cut Peridot, 7.7 x 5.5 mm From China

0.58 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.2 x 4.4 mm

1.66 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4.8 x 3.9 mm

4.58 carat Square Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 4.5 x 4.2 mm

1.82 ct Blue Apatite, 5.7 x 4.8 mm Oval Cut From Madagascar

7.46 ct Round Cut Smoky Quartz, 13.4 mm From Brazil

0.86 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gems, 5.3 x 4.4 mm

Gemstone Information

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