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 -> 10

all good

Posted By John in December, 2023

Source: Bizrate

Overall Rating -> 10

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

Posted By Nikki J in September, 2023

Source: Bizrate

Overall Rating -> 10

Great website and information

Posted By Moonshot in December, 2023

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

Overall Rating -> 10

I enjoyed browsing though different varieties of rubies. I felt that the experience was simple and easy to navigate!

Posted By Daws in July, 2023

Source: Bizrate

Overall Rating -> 10

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 2023

Source: Bizrate

Overall Rating -> 10

I find the website user friendly.

Posted By Becky in August, 2023

Source: Bizrate

Overall Rating -> 9

over the experience was similar to other sites i have used. The only real note I have is the checkout experience was tedious and discriminatory, i wouldn't accept visa gift cards, which not only have guaranteed funds but help protect from misuse of personal information, but would not accept my visa b/c it is a prepaid card. I don't have bank account and I have been using the prepaid card for years without issue so this was disappointing to me. I feel safer using reputable gem sites rather than amazon or ebay (I have been sold fake gems with fake certs on both), but not being able to use my own valid legitimate funds and having to find a friend to buy for me b/c I use a non-bank card like 40% of the country is insulting.

Posted By Iggywiggly in January, 2024

Source: Bizrate

Overall Rating -> 10

I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

Posted By Ana in September, 2023

Source: Bizrate

Overall Rating -> 10

Purchased for my granddaughter she was very pleased with it.

Posted By Charlie in April, 2024

Source: Bizrate

Overall Rating -> 10

I have used Gem Select many times over the past 10 years and have always been happy with the product & services

Posted By Ordain in August, 2023

Source: Bizrate

Overall Rating -> 10

Excellent site.

Posted By Boru in December, 2023

Source: Bizrate

Overall Rating -> 10

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.

Posted By ChiChi in January, 2024

Source: Bizrate

Overall Rating -> 9

making my own jewelry for my birth stone

Posted By LoveGeo in July, 2023

Source: Bizrate

Overall Rating -> 10

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

Source: Bizrate

Gemstones A-Z

Buy Pear Shape 18x13 mm Gems

37.89 ct Round Hematite, 21.5 mm From Brazil

3.46 ct Loose Orange Sapphire, 4.6 x 2.5 mm Marquise Cut From Tanzania

1.27 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 7 x 5 mm

1.08 ct Oval Cut Color-Change Diaspore, 7.3 x 4.8 mm From Turkey

1.78 carat Orange Hessonite Garnet, Round loose Hessonite Garnet from Sri Lanka, Natural Untreated Gems, 5.6 mm

9.92 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 13.8 x 10.1 mm

1.57 ct Blue Apatite, 5.1 x 4 mm Oval Cut From Madagascar

1.82 ct Blue Kyanite, 8.1 x 6.2 mm Oval Cut From Nepal

17.45 ct Cushion Fossil Coral, 20.6 x 14.6 mm From Indonesia

1.46 carat Blue Topaz, Round loose Topaz from Brazil, Natural Gem, 7.1 mm

8.12 ct Carved Prehnite, 17.7 x 12.4 mm From South Africa

12.32 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 14.8 x 12.7 mm

0.58 ct Octagon Cut Peridot, 6.1 x 4.1 mm From China

21.1 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gems, 24.4 x 14.4 mm

1.28 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.1 x 5.1 mm

1.93 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gem, 7.1 mm

11.43 carat Pear Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 19.1 x 14.5 mm

10.05 carat Swiss Blue Topaz, Carved Leaf loose Topaz from Brazil, Natural Gem, 16.9 x 11.6 mm

16.47 ct Green Aventurine, 20.1 x 10.5 mm Odd Shaped From Brazil

2.88 carat Red Spessartite Garnet, Round loose Spessartite Garnet from Mozambique, Natural Untreated Gems, 4.1 mm

3.1 ct Round Onyx, 7.2 mm From Sri Lanka

3.68 carat Yellow Citrine, Cushion loose Citrine from Brazil, Natural Untreated Gem, 11.2 x 8.1 mm

0.74 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 8.1 x 6.3 mm

0.4 ct Loose Yellow Sapphire, 4.1 x 4.1 mm Cushion Cut From Tanzania

49.3 carat Bi-color Ametrine, Oval Portuguese-Cut loose Ametrine from Brazil, Natural Untreated Gem, 27.9 x 20.6 mm

0.59 ct Loose Orange Sapphire, 5.8 x 4.2 mm Oval Cut From Tanzania

1.17 ct Blue Kyanite, 7.6 x 5.8 mm Oval Cut From Nepal

1.18 ct Blue Kyanite, 7.1 x 5.2 mm Oval Cut From Nepal

7.28 carat Yellow Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gem, 20.2 x 10.1 mm

4.7 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 11.4 x 11.1 mm

4.42 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 11 x 7.4 mm

7.47 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 16.2 x 7.9 mm

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