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Buy Round Shape 8 mm Gems

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (994): Round Shape 8 mm Gems Clear All
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Black Cat's Eye Scapolite Gem - 3.2ct Round Cabochon (ID: 484696)

Round Black Cat's Eye Scapolite

3.2ct
8.3 mm
$ 15.80
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1 pc
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Blue Zircon Gem - 4.8ct Round Facet (ID: 459874)

Round Blue Zircon

4.8ct
8.3 mm
$ 580.80
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1 pc
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Blue Zircon Gem - 4.5ct Round Facet (ID: 459876)

Round Blue Zircon

4.5ct
8.3 mm
$ 542.40
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Blue Zircon Gem - 3.2ct Round Facet (ID: 447488)

Round Blue Zircon

3.2ct
7.9 mm
$ 312.84
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4 pcs
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Brown Smoky Quartz Gem - 1.7ct Round Checkerboard (ID: 398860)

Round Brown Smoky Quartz

1.65 ct (total 6.60ctw)
7.9 mm
$ 46.20
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Rose Malaya Garnet Gem - 2.4ct Round Facet (ID: 326865)

Round Pink Malaya Garnet

2.4ct
8.1 mm
$ 82.95
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White Cat's Eye Moonstone Gem - 1.7ct Round Cabochon (ID: 497400)

Round White Cat's Eye Moonstone

1.7ct
8.2 mm
$ 6.64
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2 pcs
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Swiss Blue Topaz Gem - 4.3ct Spherical (ID: 338468)

Sphere / Ball Blue Topaz

4.26 ct (total 8.52ctw)
7.8 mm
$ 66.02
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4 pcs
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Multicolor Opal Gem - 1.6ct Round Cabochon (ID: 466303)

Round Multicolor Opal

1.55 ct (total 6.18ctw)
7.9 mm
$ 173.04
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5 pcs
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Yellow Golden Citrine Gem - 2.2ct Round Cabochon (ID: 267646)

Round Yellow Citrine

2.19 ct (total 10.94ctw)
8.2 mm
$ 65.64
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2 pcs
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Swiss Blue Topaz Gem - 5.1ct Spherical (ID: 338474)

Sphere / Ball Blue Topaz

5.06 ct (total 10.11ctw)
8.3 mm
$ 78.34
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Pink Orange Malaya Garnet Gem - 2.3ct Round Facet (ID: 495925)

Round Orange Malaya Garnet

2.3ct
7.9 mm
$ 96.48
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Orange Opal Gem - 1.1ct Round Cabochon (ID: 478962)

Round Orange Opal

1.1ct
8.1 mm
$ 28.94
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4 pcs
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Brown Smoky Quartz Gem - 1.9ct Round Checkerboard (ID: 398718)

Round Brown Smoky Quartz

1.91 ct (total 7.62ctw)
8 mm
$ 38.10
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1 pc
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Black Cat's Eye Scapolite Gem - 2.6ct Round Cabochon (ID: 484698)

Round Black Cat's Eye Scapolite

2.6ct
8.2 mm
$ 12.80
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5 pcs
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Green Prehnite Gem - 1.9ct Round Checkerboard (ID: 248679)

Round Green Prehnite

1.88 ct (total 9.40ctw)
7.9 mm
$ 47.56
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Pink Orange Malaya Garnet Gem - 2.7ct Round Facet (ID: 495844)

Round Orange Malaya Garnet

2.7ct
7.9 mm
$ 114.75
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4 pcs
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Pink Pearl Gem - 3.4ct Drilled Sphere (ID: 320745)

Sphere / Ball Pink Pearl

3.42 ct (total 13.68ctw)
7.9 mm
$ 75.24
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Silver Pink Pearl Gem - 3.4ct Drilled Sphere (ID: 325192)

Sphere / Ball Pink Pearl

3.4ct
7.9 mm
$ 16.85
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Yellow Cat's Eye Apatite Gem - 3.4ct Round Cabochon (ID: 494575)

Round Yellow Cat's Eye Apatite

3.4ct
8.2 mm
$ 23.87
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Yellow Scapolite Gem - 2.2ct Round Facet (ID: 470189)

Round Yellow Scapolite

2.2ct
8.3 mm
$ 26.28
Item in Stock
Round Shape 8 mm Gems
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.

Certified Customer Reviews
Overall Rating -> 10 star ratings
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Posted By RaeRae in January, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
I WOULD RECOMMEND GEM SELECT.
Posted By BO in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
As Always never disappointed in any gemstone I purchase from this site. I have never had a problem. Thank-You Gemselect for offering such a comprehensive variety . I will continue to order from this site.
Posted By Brian in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Easy to find what i'm looking for on website, very clear, like photos
Posted By Lifter in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Better than what I expected. Beautifully cut gem!
Posted By in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Gem select is the most trustworthy web site for gems. What I see in the picture is exactly what I get. Size is indicated by carat weight, and not the picture size, as they are trying to give an up close view of the gem I am hoping to buy. It was so easy to find the stones I was looking for at a price I could afford.
Posted By Nan in January, 2019
Source: Bizrate
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart