Calibrated 16 x 16 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 16 mm x 16 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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Overall Rating -> 8

Found on a search engine. Scanned inventory and made a small purchase.

Posted By Ralli in August, 2023

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Overall Rating -> 10

My last experience was good, in fact every experience I have had with them has met my expectations or surpassed them. These are really good people to work with.

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Overall Rating -> 10

Website was incredibly easy and fast to use. Navigation and product outlay was simple and enjoyable to browse. Thank you and have a blessed day!

Posted By Devi in October, 2023

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Overall Rating -> 10

Very large selection of items and we used the stones to have several pieces of jewelry made for us.

Posted By Joe in January, 2024

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Overall Rating -> 10

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

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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.

Posted By PixelComposer in January, 2024

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Overall Rating -> 10

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J in December, 2023

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Overall Rating -> 10

Very Good

Posted By Julian in July, 2023

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Overall Rating -> 10

Interested in unusual stones and found many that I purchased or will purchase in the near future. I have been a customer of gem select for almost ten years and have always been pleased with buying experience and the delivered product

Posted By Fairhope Pete in December, 2023

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Overall Rating -> 10

Great site

Posted By Lord of Bananas in November, 2023

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Overall Rating -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

Posted By Nick in March, 2024

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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

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Overall Rating -> 10

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

Posted By NJD in September, 2023

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Overall Rating -> 9

Overall good, shipping prices just seem a little on the high side.

Posted By Steve in August, 2023

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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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Gemstones A-Z

Buy Trillion Shape 16x16 mm Gems

9.29 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 15.3 x 11.5 mm

3.74 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 7.1 mm

11.22 ct Green Agate, 14.6 x 13.7 mm Oval Cut From India

1.9 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.2 x 6.6 mm

6.72 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 11 x 9.1 mm

7.99 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 14.1 x 11 mm

0.55 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 9.2 x 2.8 mm

2.7 ct Round Cut Golden Beryl, 8 mm From Madagascar

1.93 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4 x 3 mm

1.77 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 7.1 mm

2.07 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5.2 mm

3.68 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.9 x 8.9 mm

5.77 ct Oval Cut Strawberry Quartz, 14 x 10.1 mm From Brazil

7.67 ct Green Agate, 19 x 9.7 mm Carved From India

1.52 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 8.5 x 8.4 mm

1.22 ct Yellow Sphene, 6.5 x 5.7 mm Oval Cut From Sri Lanka

4.14 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 9.9 x 7.9 mm

7.21 ct Black Spinel, 9.2 mm Round Rose Cut From Thailand

0.04 ct Blue Diamond, 2.2 mm Diamond Cut From India

20.89 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 20.1 x 15 mm

1.12 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 8.9 x 6.8 mm

8.78 ct Oval Bloodstone, 13.5 x 11.3 mm From Madagascar

23.54 ct Oval Fossil Coral, 21.8 x 11.4 mm From Indonesia

3.01 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.2 x 10.1 mm

25.59 carat Pear Quartz With Marcasite, loose Certified Quartz With Marcasite from Brazil, Natural Untreated Gem, 23.4 x 20.8 mm

0.6 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gem, 6 x 4.2 mm

1.35 carat Blue Tanzanite, Round loose Tanzanite from Tanzania, Natural Gems, 5.1 mm

1.32 ct Round Labradorite, 5.2 mm From Madagascar

48.64 ct Oval Jasper, 28.9 x 25.4 mm From Mexico

7.44 ct Oval Pietersite, 19.3 x 11.3 mm From Namibia

1.06 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 13.7 x 3.1 mm

4.34 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 12.6 x 12 mm

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