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
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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 |
2.49ctw White Zircon, Round, VVS
6 mm (calibrated)
$ 73.65
1.22ct Yellow Sphalerite, Round, SI-I1
6 mm (calibrated)
$ 60.76
0.95ct Green Tourmaline, Round, Transparent
6 mm (calibrated)
$ 19.71
0.90ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 14.92
2.46ctw White Zircon, Round, VVS
6 mm (calibrated)
$ 64.68
1.43ct Orange Zircon, Round, VVS-VS
6 mm (calibrated)
$ 31.33
1.19ct Orange Zircon, Round, VVS-VS
6 mm (calibrated)
$ 28.39
2.11ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 33.32
0.84ct Multicolor Labradorite, Round, Translucent
6 mm (calibrated)
$ 2.04
1.18ct Pink Ruby, Round, VS-SI
6 mm (calibrated)
$ 105.78
1.35ct Red Ruby, Round, VS-SI
6 mm (calibrated)
$ 121.01
4.67ctw Green Peridot, Round, VS
6 mm (calibrated)
$ 45.65
2.51ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 39.63
1.12ct Orange Sphalerite, Round, SI-I1
6 mm (calibrated)
$ 55.78
0.95ct Yellow Sphalerite, Round, SI-I1
6 mm (calibrated)
$ 47.31
1.00ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 39.84
3.24ctw Green Peridot, Round, VS
6 mm (calibrated)
$ 31.66
1.31ct Orange Zircon, Round, VVS-VS
6 mm (calibrated)
$ 28.70
0.94ct Gray Tourmaline, Round, Transparent
6 mm (calibrated)
$ 18.72
1.06ct Orange Sphalerite, Round, SI
6 mm (calibrated)
$ 52.79
4.59ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 72.77
4.38ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 69.21
1.07ct Orange Hessonite Garnet, Round, VS
6 mm (calibrated)
$ 16.34
3.90ctw Green Peridot, Round, VVS-VS
6 mm (calibrated)
$ 38.11
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 
Filters need to be improved but rest of website is great
Overall Rating -> 10
Great! Affordable
Overall Rating -> 10
Wonderful purchase, can't wait to see the stone.
Overall Rating -> 10
Very neat and to the point
Overall Rating -> 10
Enjoy every moment
Overall Rating -> 10
Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.
