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

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

Love gemselect

Posted By Joshua Howard in March, 2024

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Overall Rating -> 10

It was easy to navigate and I hope that the gem is as nice as the picture

Posted By 1 in April, 2024

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Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

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Overall Rating -> 10

I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

Posted By Bikerwalrus in October, 2023

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Overall Rating -> 9

I was in the market for birthstones for a lil gift project im doing. I'm no expert in gems or what not but the quality as far as i can tell seems to be spot on.

Posted By PixelComposer in January, 2024

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Overall Rating -> 9

making my own jewelry for my birth stone

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Overall Rating -> 10

Found the stone I wanted which was delivered quickly and met expectations.

Posted By GemGrammy in January, 2024

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Overall Rating -> 10

Purchasing from Gem Select was a pleasant and easy experience. The photos of the stones I was interested in were an accurate depiction of the stones I received. Ordering was easy and the items arrived within a week. Over all it was a very positive experience.

Posted By Dee in September, 2023

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Overall Rating -> 10

The website is easy to search, the variety of gems is excellent and the educational information is interesting and helpful! Love browsing and shopping the GemSelect website!

Posted By Happiness in January, 2024

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Overall Rating -> 10

I found it to be easy to browse and easy to use

Posted By Kyle in December, 2023

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Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

Posted By WildwillyfromArizona in August, 2023

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Overall Rating -> 10

Easy to navigate

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Overall Rating -> 9

Never bought anything on this website before, but it probably won't be my last purchase. Definitely one of the easiest to use and most informative sites I've ever been to.

Posted By Bob in November, 2023

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Overall Rating -> 10

was just windowshopping and spotted a couple "Very Uncommons", a tsavorite & a demantoid garnet that were both in a size I was looking for, & that I could very easily pay for -- so figured I would grab the tsavo ASAP and got the demantoid to accompany so they wouldn't be lonely.

Posted By Kittypie070 in April, 2024

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Gemstones A-Z

Buy Pear Shape 18x13 mm Gems

31.44 carat Pear Rhodochrosite, loose Certified Rhodochrosite from South Africa, Natural Untreated Gem, 34.2 x 16.1 mm

1.45 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5 x 5 mm

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

0.46 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.8 x 4.2 mm

4.2 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.9 x 10 mm

1.08 ct Princess Cut Kornerupine, 4.4 x 4.3 mm From Sri Lanka

2.09 ct Yellow Beryl, 8 x 6.1 mm Oval Cut From Madagascar

0.74 carat Teal Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 4.9 x 4.8 mm

20.49 ct Square Hematite, 15.5 x 14.9 mm From Brazil

2.28 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.2 x 4.1 mm

1.26 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gem, 7.1 x 7.1 mm

0.73 ct Loose Green Tourmaline, 6 x 4.8 mm Oval Cabochon From Mozambique

8.67 ct Loose Baguette Lapis Lazuli, 12.5 x 10.9 mm From Afghanistan

8.88 ct Fancy Fire Agate, 18.8 x 10.3 mm From Mexico

12.05 carat Pear Charoite, loose Certified Charoite from Russia, Natural Untreated Gem, 28.2 x 12.7 mm

11.65 ct Loose Pear Labradorite, 18.3 x 13.1 mm From Madagascar

4.77 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.3 x 10 mm

4.61 ct Yellow Quartz, 13.5 x 13.4 mm Carved From Brazil

1.03 ct Blue Kyanite, 6.1 mm Round Cut From Nepal

39.01 carat Pear Labradorite, loose Certified Labradorite from Madagascar, Natural Untreated Gem, 32.3 x 22.5 mm

13.87 ct Loose Pear Labradorite, 20.4 x 15.1 mm From Madagascar

8.81 ct Oval Coral, 19.3 x 14.3 mm From Indonesia

0.57 ct Purple Spinel, 5.9 x 4.2 mm Cushion Cut From Tanzania

1.48 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.1 x 6.5 mm

5.07 ct Round Rutile Quartz, 11.2 mm From India

5.76 ct Oval Strawberry Quartz, 11.6 x 9.6 mm From Russia

3.1 ct Yellow Cat's Eye Apatite, 9.5 x 6.7 mm Oval Cut From Kenya

4.73 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gem, 11.4 x 9.2 mm

50.09 ct Fancy Jasper, 32.1 x 29.6 mm From Mexico

6.54 ct Yellow Agate, 12.8 x 11.4 mm Oval Cut From India

3.27 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.7 x 9.2 mm

2.19 carat Marquise-Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 5.9 x 3 mm

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