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.

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

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

Source: Bizrate

Overall Rating -> 8

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

Posted By Ralli in August, 2023

Source: Bizrate

Overall Rating -> 10

I have used gm select a while ago and was always pleased with the products

Posted By Jaytee in November, 2023

Source: Bizrate

Overall Rating -> 10

I particularly like information about product provided with purchase.

Posted By Dick in May, 2023

Source: Bizrate

Overall Rating -> 10

Always have good experience

Posted By Ginnie in September, 2023

Source: Bizrate

Overall Rating -> 10

It was easy to navigate and I hope that the gem is as nice as the picture

Posted By 1 in April, 2024

Source: Bizrate

Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

Posted By WildwillyfromArizona in August, 2023

Source: Bizrate

Overall Rating -> 10

Easy to find the stones I was looking for. Always good quality stones

Posted By Erin in June, 2023

Source: Bizrate

Overall Rating -> 9

making my own jewelry for my birth stone

Posted By LoveGeo in July, 2023

Source: Bizrate

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 have used Gem Select many times over the past 10 years and have always been happy with the product & services

Posted By Ordain in August, 2023

Source: Bizrate

Overall Rating -> 10

Easy and fast

Posted By Mark in February, 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

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

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

Posted By RJ in April, 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.

976

Gemstones A-Z

Buy Trillion Shape 13x13 mm Gems

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

0.59 ct Orange Sphalerite, 5.4 x 4 mm Oval Cut From Spain

6.71 ct Yellow Quartz, 14 x 12.1 mm Oval Concave Cut From Brazil

11.55 carat Black Tourmaline, Oval loose Tourmaline from Tanzania, Natural Untreated Gem, 15.6 x 13 mm

1.36 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 14.6 x 3.6 mm

3.64 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gem, 13.8 x 8 mm

1.11 ct Purple Spinel, 6.6 x 5.4 mm Cushion Cut From Tanzania

2.22 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 7.1 x 7.1 mm

10.26 ct Fancy Boulder Opal, 19.2 x 10.5 mm From Australia

12.73 ct Amethyst Geode Slice, 17.4 x 17.1 mm From Brazil

1.81 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 6.7 mm

1.71 carat Sky Blue Topaz, Heart loose Topaz from Brazil, Natural Gems, 4.1 x 4.1 mm

1.21 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 10.6 x 6 mm

1.77 carat Pink Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 7.9 x 7.3 mm

2.56 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7.1 mm

22.96 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 17.8 x 14.8 mm

0.52 ct Oval Chrysoberyl Cat's Eye, 4.5 x 4.5 mm From Sri Lanka

0.49 ct Loose Purple Sapphire, 5.4 x 4.6 mm Oval Cut From Tanzania

1.03 ct Loose Orange Moonstone, 9.8 x 5.2 mm Marquise Cut From India

26.09 carat Black Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 26.1 x 17.6 mm

46.05 ct Yellow Quartz, 32.7 x 14.6 mm Cushion Checkerboard From Brazil

3.04 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 12.4 x 5.7 mm

2.61 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 8.5 x 6.4 mm

0.36 ct Blue Kyanite, 3.9 mm Round Cut From Nepal

1.06 ct Yellow Sphene, 6.2 mm Round Cut From Sri Lanka

8.18 ct Pink Moonstone, 9.6 x 9.6 mm Carved From India

2.84 ct Blue Star Sapphire, 6.8 x 5 mm Oval Cut From Thailand

1.73 ct Yellow Beryl, 8.9 x 6.7 mm Oval Cut From Madagascar

25.56 ct Oval Cat's Eye Aquamarine, 21.6 x 18.5 mm From Madagascar

56.1 ct Oval Rutile Quartz, 34.8 x 17.3 mm From India

2.12 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.4 x 6.9 mm

2.19 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 9.1 x 7.1 mm

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT