Calibrated 8 mm Round Shape Loose Natural Gemstones from GemSelect

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 Round shapes, facet cut and cabochon gems available now in 8 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 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.

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purchased birthstones to be mounted into stud earrings as a gift for a friend's gift

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blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

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The website is well organized and works fast forward and back. Plenty of filters. Each gem is described in detail and you receive the one pictured. Gem material info and sources available. I would like to see more specifics on sources besides country- at least region or state and in the US with Turquiose which mine. Thanks!

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I had a great time searching all the lovely stones. This is my first precious loose stone purchase for my own work. I chose sapphire, and found some lovely briolettes. I wanted 3, but this set of 4 was perfect. Everything was quick and easy, and I'm excited.

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Overall Rating -> 10

was just windowshopping and spotted a couple "Very Uncommons", a tsavorite & a demantoid garnet that were both in a size I was looking for, & that I could very easily pay for -- so figured I would grab the tsavo ASAP and got the demantoid to accompany so they wouldn't be lonely.

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Gemstones A-Z

Buy Round Shape 8 mm Gems

1.79 ct Oval Cut Peridot, 7.1 x 5 mm From China

2.7 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.1 x 5.1 mm

1.02 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.9 x 5 mm

1.58 ct Orange Moonstone, 5.9 x 5.9 mm Trillion Cut From India

8.53 ct Oval Star Ruby, 12.7 x 10.4 mm From Madagascar

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

1.16 ct Round Onyx, 6.3 mm From Sri Lanka

10.67 ct Oval Larimar, 18.6 x 13.1 mm From the Dominican Republic

1.68 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 8.1 x 8 mm

6.19 ct Odd Shaped Druzy Variscite, 20.1 x 12.9 mm From China

1.49 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 7.1 x 5.1 mm

0.53 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 6 x 4.1 mm

1.35 carat Blue Sapphire, Briolette with Hole loose Sapphire from Madagascar, Natural Gems, 4.4 mm

13.64 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 18.5 x 15 mm

1.28 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 13.4 x 3.7 mm

56.03 ct Oval Jasper, 42 x 25.4 mm From Indonesia

1.45 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 8.2 x 6.2 mm

0.29 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 4 mm

6.76 carat Pink Mystic Topaz, Pear Shape loose Mystic Topaz from Brazil, Natural Gem, 14.1 x 10.1 mm

3.97 ct Orange Sunstone, 11.9 x 10 mm Oval Cut From India

1.74 carat Orange Hessonite Garnet, Round loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.7 mm

2.49 ct Round Cut Peridot, 4.5 mm From China

1.65 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.2 x 5.1 mm

10.77 ct Baguette Pietersite, 19.2 x 9.9 mm From Namibia

4.79 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14.2 x 9.8 mm

10.76 ct Loose Pear Dendritic Agate, 20.1 x 15.2 mm From India

2.85 ct Oval Cut Golden Beryl, 9.2 x 6.9 mm From Madagascar

1.22 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 8.2 x 5.6 mm

1.48 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 9.9 x 7.8 mm

6.18 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.9 x 11.9 mm

9.05 ct Oval Cut Rutile Quartz, 17.1 x 10.9 mm From India

28.15 ct Cushion Chrysocolla, 28.8 x 20.5 mm From Australia

Gemstone Information

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