Calibrated 18 x 13 mm Pear Shape Natural Loose Gemstones: GemSelect

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 Pear shapes, facet cut and cabochon gems available now in 18 x 13 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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Overall Rating -> 7

I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.

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Overall Rating -> 10

I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

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The website is well organized and works fast forward and back. Plenty of filters. Each gem is described in detail and you receive the one pictured. Gem material info and sources available. I would like to see more specifics on sources besides country- at least region or state and in the US with Turquiose which mine. Thanks!

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great. thank you

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Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

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Gemstones A-Z

Buy Pear Shape 18x13 mm Gems

8.5 ct Loose Princess Cut Sapphire, 2.9 x 2.9 mm From Tanzania

22.38 ct Oval Checkerboard Labradorite, 25.9 x 15.8 mm From Madagascar

20.76 carat Pear Dendritic Agate, loose Certified Dendritic Agate from India, Natural Untreated Gem, 23.9 x 19.9 mm

9.32 ct Fancy Dendritic Agate, 24.2 x 14.2 mm From India

12.14 ct Yellow Quartz, 15.2 x 12.5 mm Oval Cut From Brazil

3.81 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 12 x 6.1 mm

7.05 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 16 x 11.8 mm

6.07 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14 x 10.1 mm

0.74 ct Octagon Cut Color-Change Diaspore, 6.1 x 4 mm From Turkey

4.27 ct Black Star Sapphire, 9.2 x 7.6 mm Oval Cut From Thailand

0.4 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.7 x 4 mm

6.66 ct Carved Prehnite, 17.2 x 11.3 mm From South Africa

4.28 ct Orange Sunstone, 12 x 10 mm Oval Cut From India

41.98 ct Oval Rose Quartz, 24.5 x 20.9 mm From South Africa

0.91 ct Yellow Sphalerite, 5.7 x 4.7 mm Oval Cut From Spain

63.38 ct Oval Jasper, 35.5 x 26.5 mm From Indonesia

5.11 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gems, 7.6 x 5.8 mm

1.4 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 7.2 x 6.4 mm

1.38 carat Red Malaya Garnet, Marquise Cut loose Malaya Garnet from Tanzania, Natural Untreated Gem, 10.1 x 5.2 mm

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

25.95 ct Oval Jasper, 31.9 x 18.9 mm From Indonesia

1.13 ct Oval Sillimanite Cat's Eye, 7.8 x 5.3 mm From Madagascar

1.53 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gems, 5.5 mm

2.79 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 9.2 x 7.1 mm

52.16 ct Baguette Rhodochrosite, 37.7 x 15.9 mm From South Africa

30.68 carat Pear Rhodochrosite, loose Certified Rhodochrosite from South Africa, Natural Untreated Gem, 26.4 x 22.1 mm

2.04 ct Cushion Cut Peridot, 8.2 x 6.2 mm From Myanmar

4.03 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6.9 x 4.9 mm

2.63 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 9 x 7.1 mm

46.73 ct Oval Jasper, 37.9 x 26.4 mm From Indonesia

1.11 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 7.2 x 5.2 mm

77.09 ct Oval Chrysocolla, 42 x 33.4 mm From Australia

Gemstone Information

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