Calibrated 13 x 13 mm Trillion Shape Loose Natural Gemstones from ...

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 Trillion shapes, facet cut and cabochon gems available now in 13 mm 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 meant nor 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 around 0.3 mm or slightly higher even. This small variance can usually be accommodated for 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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I feel pretty good so far, pending the delivery of the item ordered.

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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

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Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

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Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

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Overall Rating -> 10

I was looking for a source for affordable genuine gemstones for my grandson who is currently very interested in rocks and gems. I was quite surprised and pleased to find GemSelect and finding the right stones at the right price couldn't have been simpler.

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purchased birthstones to be mounted into stud earrings as a gift for a friend's gift

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Overall Rating -> 10

Excellent site.

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Overall Rating -> 10

The gem stone always has a great selection of beautiful stones. The calibrated stone fit my ring perfectly. Thank you gem select !

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Overall Rating -> 10

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Gemstones A-Z

Buy Trillion Shape 13x13 mm Gems

0.97 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 8.8 x 6.7 mm

2.8 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5.1 mm

2.08 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 11.6 x 6 mm

0.22 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.5 mm

24.51 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 30.3 x 21 mm

2.43 carat Pink Morganite, Pear loose Morganite from Afghanistan, Natural Untreated Gem, 10.9 x 7 mm

5.17 ct Fancy Fire Agate, 14.7 x 8.4 mm From Mexico

6.6 ct Yellow Quartz, 11.9 mm Round Petal Cut From Brazil

5.28 ct Rainbow Pyrite, 14.4 x 9.6 mm From Russia

2.7 ct Marquise Cut Smoky Quartz, 13 x 8 mm From Brazil

16.09 ct Loose Fancy Bloodstone, 22.8 x 18.5 mm From Madagascar

1.8 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7.1 x 5.1 mm

6.66 ct Oval Agate, 11.4 x 11.1 mm From Indonesia

0.55 ct Loose Orange Sapphire, 5.8 x 3.7 mm Oval Cut From Tanzania

5.56 ct Yellow Quartz, 11.8 x 11.4 mm Asscher Cut From Brazil

1.37 carat Orange Zircon, Emerald Cut loose Zircon from Tanzania, Natural Untreated Gem, 7.2 x 5 mm

0.66 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 7.2 x 5.1 mm

1.44 carat Green Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 7.9 x 6 mm

49.54 carat Uvarovite Garnet Drusy, loose Certified Uvarovite Garnet Drusy from Russia, Natural Untreated Gem, 31.5 x 25 mm

4.59 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.2 x 9.9 mm

1.84 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.1 x 6.1 mm

5.88 ct White Moonstone, 9.2 mm Round Cut From India

28.6 ct Loose Round Labradorite, 25.5 mm From Madagascar

13.66 carat Purple Kunzite, Pear Shape loose Kunzite from Afghanistan, Natural Untreated Gem, 16.9 x 10.2 mm

5.23 ct Round Labradorite, 8.2 mm From Madagascar

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

1.02 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 8.3 x 6.3 mm

0.58 ct Orange Sphalerite, 4.7 mm Round Cut From Spain

2 ct Orange Coral, 12 x 4.9 mm Oval Cut From Australia

1.03 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 20.4 x 2.3 mm

6.36 carat Half Drilled Briolette Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.2 mm

0.62 ct Pink Spinel, 5.4 x 4.4 mm Cushion Cut From Tanzania

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