6 mm Round Gemstones
Browse our collection of calibrated 6 mm round gemstones, perfect for standard jewelry settings and custom designs.
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Bi-color
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Black 6 mm Round Gems
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Blue 6 mm Round Gems
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Brown 6 mm Round Gems
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Golden 6 mm Round Gems
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Gray 6 mm Round Gems
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Green 6 mm Round Gems
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Multicolor 6 mm Round Gems
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Orange 6 mm Round Gems
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Pink 6 mm Round Gems
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Purple 6 mm Round Gems
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Red 6 mm Round Gems
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Turquoise
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Violet 6 mm Round Gems
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White 6 mm Round Gems
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Yellow 6 mm Round Gems
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
2.52ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 47.93
2.26ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 44.75
1.79ctw Silverish Blue Tanzanite, Round, Transparent
6 mm (calibrated)
$ 35.45
3.92ctw Light Lively Green Peridot, Round, VS
6 mm (calibrated)
$ 46.16
0.88ct Bubblegum Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 17.57
1.18ct Grayish Moss Green Tourmaline, Round, Transparent
6 mm (calibrated)
$ 29.50
1.24ct Light Green Tourmaline, Round, Transparent
6 mm (calibrated)
$ 24.76
4.41ctw Clear White Zircon, Round, VS
6 mm (calibrated)
$ 83.94
1.12ct Navy Blue Kyanite, Round, SI
6 mm (calibrated)
$ 33.60
1.26ct Reddish Orange Sphalerite, Round, SI-I1
6 mm (calibrated)
$ 75.60
1.17ct Light Green Tourmaline, Round, Transparent
6 mm (calibrated)
$ 23.36
1.29ct Orange-Golden Tourmaline, Round, Transparent
6 mm (calibrated)
$ 30.96
1.09ct Bright Blue Kyanite, Round, SI
6 mm (calibrated)
$ 57.00
2.14ctw Medium Pink Tourmaline, Round, Translucent
6 mm (calibrated)
$ 42.73
1.59ctw Reddish Orange Sunstone, Round, Transparent
6 mm (calibrated)
$ 20.99
0.98ct Amber Orange Hessonite Garnet, Round, VVS-VS
6 mm (calibrated)
$ 18.04
2.40ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 85.54
2.13ctw White Zircon, Round, VS
6 mm (calibrated)
$ 40.54
1.29ct Earthy Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 25.76
0.53ct Multicolor Opal, Round, Opaque
6 mm (calibrated)
$ 20.99
1.24ct Dark Blue Kyanite, Round, SI
6 mm (calibrated)
$ 37.20
0.92ct Rose Pink Tone Malaya Garnet, Round, VS-SI
6 mm (calibrated)
$ 36.43
1.43ct Medium-Dark Orange Zircon, Round, VVS-VS
6 mm (calibrated)
$ 37.75
1.48ct Greenish Yellow Tourmaline, Round, Transparent
6 mm (calibrated)
$ 27.20
Why Buy 6 Mm Round Gems from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
Natural 6 mm Round Gemstones
Our natural 6 mm round gemstones are carefully selected for quality, brilliance, and accurate calibration. These gems are ideal for jewelers and designers who need stones that fit standard jewelry settings with precision.
Shop 6 mm Round Gemstones Online
Buy 6 mm round gemstones online at GemSelect with confidence. Our inventory includes a wide range of natural stones such as sapphire, ruby, garnet, amethyst, citrine and more, all available as loose gemstones ready for jewelry making.
Perfect Size for Standard Jewelry Settings
The 6 mm round gemstone size is one of the most popular calibrated sizes used in jewelry. It fits many standard ring, earring, and pendant mountings, making it an excellent choice for custom jewelry designs.
Wide Variety of Gemstone Types
Our selection of 6 mm round gemstones includes many popular gem types such as sapphire, ruby, topaz, garnet, peridot, and quartz varieties. This allows designers and collectors to find the ideal gemstone for any style or budget.
Faceted and Cabochon Options
Choose from sparkling faceted stones for maximum brilliance or smooth cabochon cuts for a softer appearance. Both cutting styles are available in the classic 6 mm round gemstone size.
Calibrated Gemstones for Jewelers
Calibrated gemstones are cut to precise measurements, making them easy to set into pre-made jewelry mountings. Our 6 mm round gemstones are ideal for jewelers who need consistency and accuracy in their designs.
Loose Gemstones for Custom Jewelry
Loose 6 mm round gemstones are perfect for creating custom jewelry pieces. Whether designing an engagement ring, earrings, or a pendant, these versatile stones offer balance, brilliance, and timeless appeal.
Wholesale 6 mm Round Gemstones
GemSelect offers competitive pricing on loose gemstones, including calibrated 6 mm round stones. Jewelers and collectors can find quality gems suitable for both small projects and larger jewelry production.
Learn more about gemstones, cuts, and jewelry design on our Gemstone Information pages.
FAQs
What does 6 mm mean in gemstones?
The measurement refers to the diameter of the gemstone. A 6 mm round gemstone is approximately 6 millimeters across, making it a common calibrated size used in jewelry settings.
Are 6 mm round gemstones good for rings?
Yes, 6 mm round gemstones are very popular for rings. They provide a balanced size that offers good visual presence without being too large for everyday wear.
Which gemstones are available in 6 mm round size?
Many gemstones are available in this calibrated size, including sapphire, ruby, garnet, amethyst, citrine, topaz, peridot, and other popular varieties.
Are 6 mm gemstones calibrated?
Yes, many 6 mm gemstones are cut to calibrated measurements so they can fit standard jewelry mountings designed for this size.
Can I buy 6 mm round gemstones for custom jewelry?
Absolutely. Loose 6 mm round gemstones are ideal for custom jewelry projects, allowing designers to choose the exact gemstone type, color, and quality they prefer.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.
Overall Rating -> 10
It was all good
Overall Rating -> 10
Excellent options
Overall Rating -> 10
Easy to conduct search, good amount of stock to select from along with variety of prices.
Overall Rating -> 10
Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!
Overall Rating -> 10
Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones
