Buy 6.5 mm Round Calibrated Gemstones from GemSelect

Some people buy 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 Round shapes, facet cut and cabochon gems available now in 6.5 mm diameter 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 usually 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 even slightly higher. 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

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

I have had and will always have a great time shopping at GemSelect. It's a great web site with great products and great service.

Posted By Apps in November, 2023

Source: Bizrate

Overall Rating -> 10

Purchased for my granddaughter she was very pleased with it.

Posted By Charlie in April, 2024

Source: Bizrate

Overall Rating -> 10

Found the stone I wanted which was delivered quickly and met expectations.

Posted By GemGrammy in January, 2024

Source: Bizrate

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

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

Posted By Skip in November, 2023

Source: Bizrate

Overall Rating -> 10

Always an easy experience using Gem select.

Posted By Jeff in November, 2023

Source: Bizrate

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

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 -> 7

I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.

Posted By Bobk in February, 2024

Source: Bizrate

Overall Rating -> 10

Excellent experience!

Posted By Steph in April, 2023

Source: Bizrate

Overall Rating -> 9

An it was good.

Posted By Miguel in June, 2023

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

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

Posted By HairyOtter in July, 2023

Source: Bizrate

Overall Rating -> 10

Easy to use website, made it very easy to buy. Will shop here again.

Posted By Bjorn in January, 2024

Source: Bizrate

Overall Rating -> 10

I found it to be easy to browse and easy to use

Posted By Kyle in December, 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.

237

Gemstones A-Z

Buy Round Shape 6.5 mm Gems

23.67 ct Cushion Jasper, 25.7 x 20 mm From Indonesia

1.35 ct Loose Trillion Cut Mystic Quartz, 6.1 x 6 mm From Brazil

1.73 carat Yellow Citrine, Half Drilled Heart Checkerboard loose Citrine from Brazil, Natural Untreated Gem, 8.1 x 8 mm

16.23 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 28.4 x 13.4 mm

4.55 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.2 mm

2.11 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6 mm

6.54 carat Pear Shape Smoky Quartz, loose Certified Smoky Quartz from Brazil, Natural Untreated Gem, 15.1 x 11.1 mm

1.55 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10.9 x 4.8 mm

22.75 ct Yellow Quartz, 18.6 x 14.9 mm Oval Checkerboard From Brazil

3.47 ct Orange Sunstone, 11.1 x 8.9 mm Oval Cut From India

13.86 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.8 x 12.8 mm

14.79 ct Green Jadeite, 19.4 x 16.1 mm Oval Cut From Myanmar

8.95 ct Loose Pear Labradorite, 16 x 11.9 mm From Madagascar

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

21.96 carat Pear Jasper, loose Certified Jasper from Mexico, Natural Untreated Gem, 27.3 x 19.2 mm

4.31 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 10.9 x 8.8 mm

3.1 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gems, 7.1 x 5.2 mm

2.4 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.9 x 7.5 mm

0.53 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.1 x 3.9 mm

1.11 carat Orange Moonstone, Pear Shape loose Moonstone from India, Natural Untreated Gem, 9.1 x 6.1 mm

4.24 ct Orange Sunstone, 11.8 x 9.9 mm Oval Cut From India

1.22 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 7.9 x 5.9 mm

2.72 ct Loose Orange Sapphire, 4 x 2.1 mm Marquise Cut From Tanzania

2.28 ct Oval Cut Peridot, 8.3 x 7.8 mm From Myanmar

6.75 ct Fancy Fire Agate, 13 x 10.7 mm From Mexico

2.1 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.7 x 7.2 mm

15.02 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 14 x 10.1 mm

1.47 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.8 x 6.4 mm

1.79 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 8.1 x 6.1 mm

5.4 ct Pink Morganite, 12.3 mm Round Cut From Afghanistan

1 carat Oval Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 6.9 x 5 mm

25.96 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 22.8 x 18.4 mm

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT