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.

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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

This is only the second time I have ordered from GemSelect. I am a prolific gemstone collector and I wish I had found this site sooner!

Posted By Beachcomber in September, 2023

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Overall Rating -> 9

Overall good, shipping prices just seem a little on the high side.

Posted By Steve in August, 2023

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Overall Rating -> 8

I am currently pleased. I like the layout of the website.

Posted By RayPoppa 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

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

Posted By NJD in September, 2023

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

Overall Rating -> 10

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

Source: Bizrate

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

Excellent selection of products. Website easy to navigate and make purchases.

Posted By David in April, 2023

Source: Bizrate

Overall Rating -> 10

Purchasing from Gem Select was a pleasant and easy experience. The photos of the stones I was interested in were an accurate depiction of the stones I received. Ordering was easy and the items arrived within a week. Over all it was a very positive experience.

Posted By Dee in September, 2023

Source: Bizrate

Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

great. thank you

Posted By Carrotroller in July, 2023

Source: Bizrate

Overall Rating -> 10

Awesome

Posted By Mic in May, 2023

Source: Bizrate

Overall Rating -> 9

So many gorgeous stones! The only "complaint" I have is it's difficult to visualize sizes in mm. Perhaps some way to compare in inches?It has been a long time since I bought stones from Gem select, but the process wasn't too difficult.

Posted By Ktreva52 in February, 2024

Source: Bizrate

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Gemstones A-Z

Buy Round Shape 6.5 mm Gems

18.02 carat Black Tourmaline, Cushion loose Tourmaline from Mozambique, Natural Untreated Gem, 18.3 x 12.8 mm

3.22 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gems, 6 x 5.8 mm

1.3 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 6.7 x 5.2 mm

2.46 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 9.1 x 7.6 mm

2.36 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5 mm

0.74 ct Round Cut Color-Change Diaspore, 5.4 mm From Turkey

0.46 ct Loose Pink Sapphire, 5.1 x 4.2 mm Oval Cut From Madagascar

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

19.7 ct Carved Ruby-Zoisite, 17.9 x 16.3 mm From Tanzania

1.13 carat Orange Hessonite Garnet, Pear Shape loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.8 x 5.7 mm

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

0.86 ct Oval Cut Peridot, 6.9 x 4.8 mm From China

1.72 ct Blue Kyanite, 8.1 x 6.1 mm Oval Cut From Nepal

1.25 carat Bi-color Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 6.1 x 5.1 mm

0.78 carat Orange Hessonite Garnet, Pear Shape loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.9 x 4.8 mm

63.74 ct White Scolecite, 41.7 x 20.3 mm Half Moon Cut From South Africa

13.52 carat Pear Checkerboard Labradorite, loose Certified Labradorite from Madagascar, Natural Untreated Gems, 18.2 x 13.3 mm

1.58 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 6.5 mm

2.03 ct Blue Apatite, 5 x 4 mm Oval Cut From Madagascar

4.64 ct Rondelle Cut Carnelian, 5.6 x 5.1 mm From India

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

1.96 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8 x 6 mm

21.96 ct White Amazonite, 35.9 mm Pencil Cut From Madagascar

3.14 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.9 x 8.8 mm

4.18 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.8 x 10 mm

3.41 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.2 x 5.2 mm

3.45 ct Asscher Cut Rose Quartz, 9.7 x 9.7 mm From South Africa

30.44 ct Fancy Fossil Coral, 22.9 x 12.4 mm From Indonesia

2.62 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gems, 7.1 x 5.1 mm

15.99 ct Pink Coral, 15.3 x 11.1 mm Carved From Taiwan

7.14 ct Blue Green Apatite, 12.9 x 10.6 mm Oval Cut From Madagascar

3.4 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gems, 6.6 mm

Gemstone Information

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