Calibrated 12 x 12 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 12 mm x 12 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 -> 9

I am of the opinion that the company gem select cares about the product beautiful gems it sells and the cost of the gem I purchased was small i was treated as if it cost a lot of money and product was described in detail and i felt good about the little stones i had ordered.

Posted By Sparkle in March, 2024

Source: Bizrate

Overall Rating -> 10

Overall, the whole process was just great.

Posted By Thatoneguy in August, 2023

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Overall Rating -> 10

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 -> 8

I did not realize how small the stone was. I cannot use it for the project I wanted, but I am keeping the stone and tru to use it in something else.

Posted By Mark in March, 2024

Source: Bizrate

Overall Rating -> 10

After having looked at other purchasing sites, this is my first choice.

Posted By MJC in January, 2024

Source: Bizrate

Overall Rating -> 10

I bought a small ring green so I may practice my jewelry making.

Posted By HairyOtter in July, 2023

Source: Bizrate

Overall Rating -> 10

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024

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Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

Posted By JAB93 in June, 2023

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Overall Rating -> 10

Awesome

Posted By Mic in May, 2023

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Overall Rating -> 10

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

Posted By Kate 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 -> 10

Easy to use,I have spent many hours looking at the site

Posted By Skip in November, 2023

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Overall Rating -> 10

Posted By ChiChi in January, 2024

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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 selection and excellent website.

Posted By JBW in October, 2023

Source: Bizrate

Gemstones A-Z

Buy Trillion Shape 12x12 mm Gems

2.24 carat Blue Green Fluorite, Oval loose Fluorite from India, Natural Untreated Gem, 9.1 x 7 mm

1.86 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4.5 x 3.7 mm

1.32 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6 x 6 mm

1.77 ct Blue Star Sapphire, 7.2 x 5.3 mm Oval Cut From Thailand

0.19 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.4 mm

9.04 ct Round Rutile Quartz, 13 mm From India

0.79 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 5.9 x 4.6 mm

2.21 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 17.6 x 4 mm

23.38 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 33.7 x 14.7 mm

2.95 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.4 x 8.7 mm

2.34 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm

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

3.03 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 9.9 mm

20.36 ct Green Jadeite, 23.2 x 17.1 mm Oval Cut From Myanmar

1.39 ct Blue Apatite, 5.1 x 4.1 mm Oval Cut From Madagascar

0.98 ct Octagon Cut Peridot, 7 x 5 mm From China

1.91 carat Swiss Blue Topaz, Square loose Topaz from Brazil, Natural Gem, 6.9 x 6.9 mm

1.29 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.9 x 5 mm

2.69 ct Orange Moonstone, 8.1 x 6.1 mm Cushion Cut From India

7.59 carat Blue Topaz, Heart loose Topaz from Brazil, Natural Gem, 11.3 x 11.1 mm

13.06 carat Black Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 15.9 x 12.9 mm

6.05 carat Yellow Citrine, Briolette loose Citrine from Brazil, Natural Untreated Gem, 16.2 mm

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

1.18 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.8 x 5 mm

4.37 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4 mm

3.02 ct Loose Baguette Labradorite, 9.1 x 6.8 mm From Madagascar

1.55 ct Loose Round Cut Lapis Lazuli, 5.9 mm From Afghanistan

0.83 ct Blue Kyanite, 5.2 mm Round Cut From Nepal

1.21 ct Yellow Beryl, 8.2 x 6.2 mm Oval Cut From Madagascar

4.57 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.6 mm

0.38 carat Green Sapphire, Trillion-Cut loose Sapphire from Madagascar, Natural Gem, 4.7 x 4.4 mm

1.37 ct Yellow Beryl, 8.1 x 8.1 mm Trillion Cut From Brazil

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