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 website is easy to search, the variety of gems is excellent and the educational information is interesting and helpful! Love browsing and shopping the GemSelect website!

Posted By Happiness in January, 2024

Source: Bizrate

Overall Rating -> 10

Interested in unusual stones and found many that I purchased or will purchase in the near future. I have been a customer of gem select for almost ten years and have always been pleased with buying experience and the delivered product

Posted By Fairhope Pete in December, 2023

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

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Overall Rating -> 9

It went well

Posted By Rob in December, 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

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

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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 really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

Source: Bizrate

Overall Rating -> 10

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

Posted By David W in May, 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 -> 8

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

Posted By RayPoppa in January, 2024

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Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

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Overall Rating -> 10

Super easy to do business for great products.

Posted By BoBBy in January, 2024

Source: Bizrate

Overall Rating -> 10

Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

Posted By DanM in November, 2023

Source: Bizrate

Overall Rating -> 10

i love this site, the gems are always of good quality, i've been buy gifts from the site for 10 years, love it

Posted By Jf in January, 2024

Source: Bizrate

Gemstones A-Z

Buy Round Shape 6.5 mm Gems

1.16 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.2 x 5.9 mm

1.61 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8.1 x 8 mm

36.09 carat Green Amazonite, Oval loose Amazonite from Madagascar, Natural Untreated Gem, 28.3 x 18.3 mm

0.29 ct Orange Sphalerite, 3.8 mm Round Cut From Spain

1.22 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gems, 5.1 mm

0.43 carat Pear Shape Emerald, loose Certified Emerald from Colombia, Natural Gem, 6 x 4.1 mm

0.36 ct Oval Chrysoberyl Cat's Eye, 4.1 x 3.9 mm From Sri Lanka

28.1 ct Oval Dendritic Agate, 27.9 x 17.5 mm From India

2.59 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.1 mm

1.34 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7 x 5 mm

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

24.11 ct Oval Jasper, 21.2 x 17.9 mm From Mexico

14.89 ct Oval Agate, 15.6 x 15.4 mm From Indonesia

17.5 ct Oval Nuummite, 19.2 x 14.4 mm From India

53.35 carat Oval Ruby, loose Certified Ruby from Mozambique, Natural Gem, 23.1 x 20 mm

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

0.57 ct Purple Spinel, 5.9 x 4.2 mm Cushion Cut From Tanzania

0.63 ct Loose Orange Sapphire, 5.9 x 4.1 mm Oval Cut From Tanzania

1.23 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 6.7 x 5.2 mm

0.08 ct Green Diamond, 2.7 mm Diamond Cut From India

2.23 ct Oval Checkerboard Smoky Quartz, 9.6 x 7.7 mm From Brazil

48.76 ct Baguette Tiger's Eye Matrix, 28 x 20.3 mm From Mexico

0.85 ct Loose Pink Sapphire, 5 x 4 mm Oval Cut From Tanzania

0.99 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gems, 5.1 x 4.1 mm

1.4 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6 mm

35.13 ct Cushion Fossil Coral, 22.8 x 15.1 mm From Indonesia

1.5 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 6.6 mm

4.21 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 4 x 4 mm

19.7 carat Pear Tiger's Eye, loose Certified Tiger's Eye from Thailand, Natural Untreated Gem, 25.7 x 13.9 mm

4.61 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gems, 6 mm

123.63 carat Swiss Blue Topaz, Oval Portuguese-Cut loose Topaz from Brazil, Natural Gem, 31.7 x 24.7 mm

11.57 ct Oval Boulder Opal, 17.3 x 12.3 mm From Australia

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