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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Gemstone Information

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I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

Posted By Ktreva52 in February, 2024

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Overall Rating -> 10

I FOUND WHAT I WANT IT

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Overall Rating -> 10

My first order. I am anxious to see if what I ordered is what I receive.

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Overall Rating -> 10

Selection ability was straightforward and easy.

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I particularly like information about product provided with purchase.

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The website is easy to navigate and the images are incredible.

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The gems were as described, which is kind of rare these days. I am happy with the purchase, and delevery on time.

Posted By T-bone in October, 2023

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Overall Rating -> 10

Great selection of various gems, easy to navigate site

Posted By Josh in August, 2023

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Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

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The website design is a bit finicky for mobile, but Im sure its most likely just a mobile issue. Amazing selection of products, great prices.

Posted By Kuba in December, 2023

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Overall Rating -> 9

Everything was good but since I am still new I was surprised at how small the stones where.

Posted By Js in May, 2023

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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.

Posted By Terry in June, 2023

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Overall Rating -> 10

Found what I was looking for

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first time here sooooooooooo we will seeeee!!!!! so far so good!!!!!!

Posted By Seastone 56 in October, 2023

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Overall Rating -> 10

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

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Gemstones A-Z

Buy Pear Shape 18x13 mm Gems

20.33 ct Cushion Chalcedony, 21.4 x 17.9 mm From Brazil

1.58 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6.3 x 6.2 mm

1.46 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 13 x 3.5 mm

18.89 ct Oval Jasper, 31.5 x 21.2 mm From Indonesia

12.82 ct Yellow Quartz, 12 mm Round Concave Cut From Brazil

4.01 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm

1.06 carat Oval Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gem, 7 x 5.1 mm

8.31 ct Heart Rose Cut Onyx, 10.4 x 10.3 mm From Sri Lanka

4.95 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 6.8 x 6.6 mm

3.16 ct Trillion Onyx, 9.8 x 9.3 mm From Sri Lanka

5.06 ct Round Cut Smoky Quartz, 11 mm From Brazil

2.99 carat Pink Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gems, 8.2 x 6.3 mm

3.46 ct Marquise Pietersite, 21.2 x 5.8 mm From Namibia

1.3 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 6.7 x 5.2 mm

1.09 ct Octagon Cut Color-Change Diaspore, 5.8 x 5 mm From Turkey

1.57 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.3 x 6.3 mm

12.67 ct Oval Pietersite, 15.5 x 11.6 mm From Namibia

17.76 ct Fancy Fossil Coral, 20.6 x 10.3 mm From Indonesia

1.46 ct Yellow Beryl, 7.1 mm Round Cut From Brazil

0.98 carat Orange Hessonite Garnet, Pear Shape loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.7 x 5.4 mm

94.63 carat Yellow Quartz, Pear Checkerboard loose Quartz from Brazil, Natural Gem, 28.9 x 28.3 mm

7 ct Yellow Quartz, 12.9 x 10.6 mm Carved From Brazil

4.68 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.2 mm

1.02 ct Blue Kyanite, 7.1 x 5 mm Oval Cut From Nepal

31.61 ct Cushion Jasper, 24.6 x 21.8 mm From Indonesia

20.04 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.2 x 14.2 mm

1.61 carat Pink Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 8 x 6.5 mm

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

0.77 ct Orange Sphalerite, 5.6 x 5 mm Oval Cut From Spain

0.9 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.3 x 5.3 mm

2.15 carat Princess-Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8 x 7.9 mm

1.19 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 5.9 mm

Gemstone Information

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