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 |
2.59ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 45.97
1.06ct Blue Kyanite, Round, SI
6 mm (calibrated)
$ 26.39
0.93ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 15.42
1.22ct Yellow Sphalerite, Round, SI-I1
6 mm (calibrated)
$ 60.76
3.32ctw Green Peridot, Round, VS
6 mm (calibrated)
$ 32.44
4.67ctw Green Peridot, Round, VS
6 mm (calibrated)
$ 45.65
2.16ctw Orange Hessonite Garnet, Round, VS
6 mm (calibrated)
$ 33.28
1.26ct Orange Zircon, Round, VVS-VS
6 mm (calibrated)
$ 30.06
2.41ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 39.61
1.45ct Red Ruby, Round, VS-SI
6 mm (calibrated)
$ 129.98
0.85ct Blue Kyanite, Round, SI
6 mm (calibrated)
$ 21.17
1.06ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 17.57
1.76ctw Red Pyrope Garnet, Round, VS
6 mm (calibrated)
$ 15.43
2.37ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 37.42
1.10ct Blue Kyanite, Round, SI
6 mm (calibrated)
$ 27.39
1.27ct Green Emerald, Round, Translucent
6 mm (calibrated)
$ 88.54
0.86ct Red Ruby, Round, VS-SI
6 mm (calibrated)
$ 77.09
1.97ctw Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 32.65
4.18ctw White Zircon, Round, VVS-VS
6 mm (calibrated)
$ 66.27
0.95ct Yellow Sphalerite, Round, SI-I1
6 mm (calibrated)
$ 47.31
1.08ct Blue Kyanite, Round, VS-SI
6 mm (calibrated)
$ 22.48
1.06ct Orange Hessonite Garnet, Round, VS
6 mm (calibrated)
$ 18.51
1.18ct Red Spinel, Round, VVS-VS
6 mm (calibrated)
$ 177.00
0.86ct Green Tourmaline, Round, VS-SI
6 mm (calibrated)
$ 119.92
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 
Although the stones are smaller than I thought, I really don't think in millimeters, they are perfect. I plan to put one into a ring and the other into a necklace. Ordering was easy, contact kept me aware of how shipping was going, and delivery was sooner than expected. The quality of stones I have ordered in the past and this recent order is outstanding and stones I will be proud to wear.
Overall Rating -> 10
This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.
Overall Rating -> 10
Very good, wide selection of good prices gems.
Overall Rating -> 10
Easy and good price
Overall Rating -> 10
Recomendado Totalmente Los Productos Se Entregaron A Tiempo
Overall Rating -> 10
IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.
