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 -> 10

Love Gem select. great gems for the price. Can't beet them

Posted By Apps in September, 2023

Source: Bizrate

Overall Rating -> 10

Gem Select has gems at afffordable prices.

Posted By George in March, 2024

Source: Bizrate

Overall Rating -> 10

Awesome

Posted By Mic in May, 2023

Source: Bizrate

Overall Rating -> 10

LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

Posted By APPS in April, 2024

Source: Bizrate

Overall Rating -> 10

I loved the opportunity to shop on a website that I could trust 👍

Posted By Will J. Lover in September, 2023

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

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 -> 9

Good interaction with site

Posted By Brick in September, 2023

Source: Bizrate

Overall Rating -> 10

Great website and information

Posted By Moonshot in December, 2023

Source: Bizrate

Overall Rating -> 10

Easy and fast

Posted By Mark in February, 2024

Source: Bizrate

Overall Rating -> 10

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

Source: Bizrate

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

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

Great selection and excellent website.

Posted By JBW in October, 2023

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

53.45 ct Oval Jasper, 43.1 x 24.8 mm From Indonesia

3.97 ct Orange Sunstone, 11.9 x 10 mm Oval Cut From India

7.76 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8 x 6 mm

0.4 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 5.1 x 4 mm

2.25 ct Round Cut Strawberry Quartz, 7.1 mm From Russia

5.88 carat Round Almandine Garnet, loose Certified Almandine Garnet from Madagascar, Natural Untreated Gems, 3 mm

2.81 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.5 mm

1.7 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 8.1 x 6 mm

0.59 ct Yellow Sphalerite, 5.7 x 4.6 mm Oval Cut From Spain

0.57 carat Blue Sapphire, Oval loose Sapphire from Sri Lanka, Natural Gem, 5.8 x 4.1 mm

1.46 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Gem, 9 x 7 mm

28.56 ct Cushion Checkerboard Labradorite, 22.7 x 22.6 mm From Madagascar

0.4 ct Loose Violet Sapphire, 5.9 x 3.9 mm Oval Cut From Tanzania

2.96 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5.1 x 5 mm

0.98 ct Oval Sillimanite Cat's Eye, 7.1 x 4.9 mm From Madagascar

3.84 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from India, Natural Untreated Gems, 7 x 6.9 mm

0.78 ct Blue Kyanite, 5.1 mm Round Cut From Nepal

30.47 ct Loose Round Labradorite, 25.3 mm From Madagascar

4.46 ct Loose Oval Cut Strawberry Quartz, 12.1 x 9.8 mm From India

1.76 carat Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7.2 x 5.1 mm

3.49 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 8.9 x 8.8 mm

2.08 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7.1 x 5.1 mm

15.44 carat Carved Fish Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 22.1 x 14.5 mm

0.91 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 5.9 x 4 mm

2.8 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gems, 9.9 x 4.9 mm

1.82 carat Blue Zircon, Emerald Cut loose Zircon from Cambodia, Natural Gems, 4 x 2.6 mm

0.11 ct Black Diamond, 2.1 mm Diamond Cut From India

1.43 ct Pink Morganite, 7.2 mm Round Cut From Afghanistan

4.5 ct Fancy Fire Agate, 12 x 8.6 mm From Mexico

6.97 ct Cushion Boulder Opal, 19.2 x 10.7 mm From Australia

1.09 ct Yellow Morganite, 8 x 6 mm Oval Cut From Afghanistan

8.25 ct Oval Coral, 19.4 x 10.9 mm From Indonesia

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT