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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Gemstones A-Z

Buy Pear Shape 18x13 mm Gems

2.05 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 7.9 x 6.2 mm

2.33 ct Oval Tiger's Eye, 8.6 x 7 mm From Thailand

3.7 ct Oval Tiger's Eye, 12.3 x 8.3 mm From Thailand

6.4 ct Round Cut Smoky Quartz, 12.6 mm From Brazil

1.03 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 7.2 x 7.2 mm

0.82 carat Oval Peridot, loose Certified Peridot from China, Natural Untreated Gem, 7.1 x 5 mm

6.78 ct Oval Cut Strawberry Quartz, 11.2 x 9.1 mm From Russia

2.32 carat Green Fluorite, Pear Shape loose Fluorite from India, Natural Untreated Gem, 10.6 x 7 mm

0.7 ct Orange Sphalerite, 5 mm Round Cut From Spain

3.58 carat Pear Shape Opal, loose Certified Opal from Australia, Natural Untreated Gem, 14.5 x 10.4 mm

3.98 carat Blue Green Fluorite, Oval loose Fluorite from India, Natural Untreated Gem, 10.8 x 8.4 mm

1.65 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.1 mm

0.16 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.3 mm

0.85 carat Green Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gem, 5.5 mm

14.49 carat Cameo Mother of Pearl, loose Certified Mother of Pearl from China, Natural Gem, 25 mm

1.27 ct Marquise Cut Color-Change Diaspore, 10.9 x 5.1 mm From Turkey

0.98 ct Octagon Cut Peridot, 7 x 5 mm From China

1.17 carat Orange Hessonite Garnet, Pear Shape loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.2 x 6.1 mm

0.54 ct Loose Orange Sapphire, 5.8 x 4.1 mm Oval Cut From Tanzania

0.39 ct Loose Yellow Sapphire, 5 x 3 mm Baguette Cut From Tanzania

1.07 ct Blue Kyanite, 5.9 x 3.9 mm Oval Cut From Nepal

1.49 ct Oval Cut Strawberry Quartz, 8.9 x 6.9 mm From Russia

7.24 ct Oval Cut Strawberry Quartz, 11.1 x 8.9 mm From Russia

27.67 ct Cushion Hematite, 18.6 x 17.8 mm From Brazil

6.4 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14.7 x 11.2 mm

4.98 carat Blue Zircon, Oval loose Zircon from Cambodia, Natural Gem, 9.4 x 7.3 mm

4.62 ct Green Jadeite, 11.9 x 10 mm Oval Cut From Myanmar

3.03 ct Orange Sunstone, 6.1 x 4.2 mm Oval Cut From Russia

35.98 ct Oval Psilomelane Dendrite, 32 x 24 mm From Mexico

3.3 ct Diamond Cut Andalusite, 3.5 mm From Brazil

1.62 ct Loose Orange Moonstone, 10.3 x 5.7 mm Marquise Cut From India

14.4 carat Pear Quartz With Marcasite, loose Certified Quartz With Marcasite from Brazil, Natural Untreated Gem, 23.2 x 15.2 mm

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