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 |
1.22ct Yellow Sphalerite, Round, SI-I1
6 mm (calibrated)
$ 60.76
4.31ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 76.49
0.53ct Multicolor Opal, Round, Opaque
6 mm (calibrated)
$ 17.42
4.34ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 68.81
0.88ct Brown Smoky Quartz, Round, Transparent
6 mm (calibrated)
$ 6.13
1.17ct Yellow Tourmaline, Round, Transparent
6 mm (calibrated)
$ 20.06
0.94ct Blue Kyanite, Round, SI-I1
6 mm (calibrated)
$ 25.75
0.84ct Violet Amethyst, Round, Transparent
6 mm (calibrated)
$ 5.86
0.66ct White Rainbow Moonstone, Round, Transparent
6 mm (calibrated)
$ 21.03
0.95ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 15.75
4.51ctw Green Peridot, Round, VS
6 mm (calibrated)
$ 44.07
1.09ct Blue Kyanite, Round, SI
6 mm (calibrated)
$ 27.14
2.38ctw White Zircon, Round, VVS
6 mm (calibrated)
$ 62.58
1.17ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 24.28
1.24ct Red Ruby, Round, VS
6 mm (calibrated)
$ 92.63
4.41ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 72.48
1.03ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 17.07
4.63ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 73.15
2.30ctw White Zircon, Round, VS
6 mm (calibrated)
$ 68.04
1.09ct Blue Kyanite, Round, SI
6 mm (calibrated)
$ 47.31
1.15ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 17.50
2.33ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 36.81
4.40ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 69.76
1.21ct Red Ruby, Round, VS-SI
6 mm (calibrated)
$ 416.88
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 
Great prices!!! High quality gemstones.
Overall Rating -> 7 
easy interface for a pricless buy
Overall Rating -> 10
I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.
Overall Rating -> 8 
Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.
Overall Rating -> 10
My experience was done with ease
Overall Rating -> 10
Over pretty well experience the your website no complaints about it very easy reliable service provided
