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

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

GemSelect has the Best gems. Clear photos and detailed description helps me make the best choice. I have Never been disappointed by thier quality items.

Posted By Rock Hound in July, 2023

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Overall Rating -> 10

Purchased for my granddaughter she was very pleased with it.

Posted By Charlie in April, 2024

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Overall Rating -> 10

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

Posted By GemGrammy in January, 2024

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Overall Rating -> 10

Pleasant.

Posted By Mk in November, 2023

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Overall Rating -> 9

Never bought anything on this website before, but it probably won't be my last purchase. Definitely one of the easiest to use and most informative sites I've ever been to.

Posted By Bob in November, 2023

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Overall Rating -> 10

I find the website user friendly.

Posted By Becky in August, 2023

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Overall Rating -> 10

Very easy. I have purchased a few times before and was satisfied each time. Thank you.

Posted By Ray in December, 2023

Source: Bizrate

Overall Rating -> 10

I’ve enjoyed purchasing stones from this site. It’s convenient and fairly priced.

Posted By Chico in May, 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 -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

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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

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Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

Posted By JAB93 in June, 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

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 2023

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Gemstones A-Z

Buy Round Shape 6.5 mm Gems

3.63 ct Yellow Beryl, 10 x 7.9 mm Oval Cut From Brazil

55.11 ct Fancy Charoite, 34.5 x 31 mm From Russia

2.19 carat Blue Sapphire, Briolette with Hole loose Sapphire from Madagascar, Natural Gems, 4.5 mm

38.62 ct Oval Rose Quartz, 22.1 x 18.1 mm From South Africa

12.16 ct Pink Mystic Topaz, 10.1 x 10.1 mm Square Cut From Brazil

2.33 ct White Moonstone, 10.2 x 7.8 mm Oval Cut From India

2.32 ct Square Cut Rainbow Moonstone, 2.9 x 2.9 mm From Sri Lanka

1.02 ct Pink Morganite, 6.4 mm Round Cut From Afghanistan

1.53 carat Princess-Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 7 x 6.9 mm

0.57 ct Loose Pear Labradorite, 6.3 x 4.1 mm From Madagascar

9.29 ct Round Pietersite, 13.5 mm From Namibia

28.06 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 19.4 x 15.4 mm

13.66 carat Pink Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 17.2 x 12.5 mm

0.65 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from the United States, Natural Untreated Gem, 6.7 x 4.8 mm

0.04 ct Blue Diamond, 2.1 mm Diamond Cut From India

1.71 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5 mm

0.73 ct Octagon Cut Color-Change Diaspore, 6.2 x 4.5 mm From Turkey

37.38 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 38.2 x 24.4 mm

0.95 ct Octagon Cut Color-Change Diaspore, 6.4 x 5.8 mm From Turkey

6.11 ct Rondelle Cut Carnelian, 6 x 6 mm From India

4.98 ct Orange Sunstone, 9 mm Round Cut From India

5.6 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 10.1 x 8.2 mm

1.46 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 5 mm

2.19 carat Blue Topaz, Round loose Topaz from Brazil, Natural Gem, 8 mm

10.51 ct Pink Morganite, 11.9 x 10 mm Oval Cut From Afghanistan

4.65 ct Blue Green Grandidierite, 11.7 x 8.7 mm Oval Cut From Madagascar

1.81 carat Pink Malaya Garnet, Round loose Malaya Garnet from Tanzania, Natural Untreated Gem, 7.4 mm

3.3 carat Blue Sapphire, Briolette with Hole loose Sapphire from Sri Lanka, Natural Gems, 5.4 mm

3.05 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.1 x 4.2 mm

0.69 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 7.1 x 5.1 mm

0.9 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4.1 mm

0.46 ct Blue Kyanite, 3.7 mm Round Cut From Nepal

Gemstone Information

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