Calibrated Trillion Cut Gemstones in Size 15x15 mm

Some people by gems by color or prize, 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 15 mm x 15 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.

Read All

Gemstone Information

Find More Content Here

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 9

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023

Source: Bizrate

Overall Rating -> 10

i love this site, the gems are always of good quality, i've been buy gifts from the site for 10 years, love it

Posted By Jf in January, 2024

Source: Bizrate

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 !

Posted By Jen in August, 2023

Source: Bizrate

Overall Rating -> 10

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

Posted By David W in May, 2023

Source: Bizrate

Overall Rating -> 9

Well presented images, clear information, quick and easy check out.

Posted By Mr. Bezel 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

Source: Bizrate

Overall Rating -> 10

My overall interaction with your website was pleasant, as always.

Posted By RJ in April, 2024

Source: Bizrate

Overall Rating -> 10

Great Job today! No issues!

Posted By Samlovesgems777 in August, 2023

Source: Bizrate

Overall Rating -> 10

Easy to use as always and in all steps from opening site to paying.

Posted By Pete in February, 2024

Source: Bizrate

Overall Rating -> 10

Overall, the whole process was just great.

Posted By Thatoneguy in August, 2023

Source: Bizrate

Overall Rating -> 9

An it was good.

Posted By Miguel in June, 2023

Source: Bizrate

Overall Rating -> 10

Fine. All emails answered. Excellent service. Nice discount added for orders. Briefly, a very good experience.

Posted By C.J. in February, 2024

Source: Bizrate

Overall Rating -> 10

Easy to navigate

Posted By G Funk in December, 2023

Source: Bizrate

Overall Rating -> 10

Awesome

Posted By Mic in May, 2023

Source: Bizrate

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

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT

183/24-25 Moo 4, Trirat Rd.
T. Chantanimit, A. Muang
Chanthaburi 22000
THAILAND
Phone: 1-800-464-1640
Phone: +66-39601289

STAY IN TOUCH | NEWSLETTER

*You're signing up to receive GemSelect promotional email.

Switch to Mobile Version

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

978

Gemstones A-Z

Buy Trillion Shape 15x15 mm Gems

3.72 carat Yellow Citrine, loose Citrine from Brazil, Natural Untreated Gem, 10.2 x 10.1 mm

2.11 ct Cushion Cut Mystic Quartz, 8 x 7.9 mm From Brazil

0.43 ct Loose White Sapphire, 4.4 mm Diamond Cut From Madagascar

1.45 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 10.1 x 8.2 mm

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

0.66 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.1 x 4.1 mm

76.69 carat Pear Shape Rose Quartz, loose Certified Rose Quartz from South Africa, Natural Untreated Gem, 34.6 x 24.6 mm

1.82 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 6.8 mm

22.48 ct Cushion Fossil Coral, 16.6 x 12.5 mm From Indonesia

50.9 ct Oval Rhodochrosite, 27 x 20.2 mm From South Africa

1.25 ct Oval Checkerboard Labradorite, 7.1 x 6 mm From Madagascar

7.84 ct Loose Oval Lapis Lazuli, 14.5 x 10.7 mm From Afghanistan

0.52 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.2 x 4.1 mm

21.17 ct Pink Coral, 25.3 x 14.6 mm Carved From Taiwan

1.41 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 7.2 x 5.2 mm

2.2 ct Orange Moonstone, 7.2 x 7.2 mm Square Cut From India

2.39 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 9 x 7.3 mm

3.65 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 9 x 9 mm

8.29 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gem, 14.1 x 10.1 mm

1.86 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.2 x 6.8 mm

0.66 ct Loose Purple Sapphire, 6.1 x 5.1 mm Oval Cut From Tanzania

2.69 ct Purple Kunzite, 8 x 5.8 mm Octagon Cut From Afghanistan

28.87 ct Loose Pear Bloodstone, 39.8 x 20.3 mm From Madagascar

1.91 carat Violet Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.1 x 3.2 mm

2.86 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gems, 6 x 6 mm

6.3 ct Pink Morganite, 13.4 x 12.8 mm Trillion Cut From Afghanistan

3.02 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 10 mm

3.78 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.1 x 9.1 mm

65.53 ct Round Hematite, 20.1 mm From Brazil

1.75 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 8.1 mm

2.85 carat Pear Shape Rainbow Moonstone, loose Certified Rainbow Moonstone from India, Natural Untreated Gems, 4.9 x 4.8 mm

0.79 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 9.5 x 4.1 mm

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT