X
Gemstone Search
90,000+ Happy Customers
20+ Years In Business
Call Us Mon–Fri 8am–5pm

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

6mm Round Gemstones for Sale

6mm Round Gemstones Weight
6mm Round Gemstones Size
6mm Round Gemstones Clarity
6mm Round Gemstones Price
6mm Round Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black 6mm Round Gemstones
Blue 6mm Round Gemstones
Brown 6mm Round Gemstones
Golden
Gray 6mm Round Gemstones
Green 6mm Round Gemstones
Multicolor 6mm Round Gemstones
Orange 6mm Round Gemstones
Pink 6mm Round Gemstones
Purple 6mm Round Gemstones
Red 6mm Round Gemstones
Turquoise
Violet 6mm Round Gemstones
White 6mm Round Gemstones
Yellow 6mm Round Gemstones
Single
Pairs
Lots
Faceted
Cabochons
Clear All

1.22ct Yellow Sphalerite, Round, SI-I1

6 mm (calibrated)

$ 73.20

View Gem

1.03ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 20.57

View Gem

1.06ct Red Ruby, Round, VS-SI

6 mm (calibrated)

$ 806.65

View Gem

0.99ct Brown Color-Change Garnet, Round, VS

6 mm (calibrated)

$ 95.29

View Gem

0.94ct Gray Tourmaline, Round, Transparent

6 mm (calibrated)

$ 22.56

View Gem

2.52ctw White Zircon, Round, VVS-VS

6 mm (calibrated)

$ 79.84

View Gem

0.54ct White Rainbow Moonstone, Round, Transparent

6 mm (calibrated)

$ 22.68

View Gem

0.94ct Yellow Tourmaline, Round, Transparent

6 mm (calibrated)

$ 33.84

View Gem

2.01ctw Blue Tanzanite, Round, Transparent

6 mm (calibrated)

$ 39.80

View Gem

2.43ctw White Zircon, Round, VVS-VS

6 mm (calibrated)

$ 76.98

View Gem

1.08ct Blue Kyanite, Round, VS-SI

6 mm (calibrated)

$ 27.08

View Gem

4.71ctw White Zircon, Round, VVS-VS

6 mm (calibrated)

$ 89.65

View Gem

4.41ctw White Zircon, Round, VVS-VS

6 mm (calibrated)

$ 87.32

View Gem

1.26ct Orange Tourmaline, Round, Transparent

6 mm (calibrated)

$ 25.16

View Gem

1.03ct Blue Kyanite, Round, SI

6 mm (calibrated)

$ 30.90

View Gem

1.40ct Red Ruby, Round, VS-SI

6 mm (calibrated)

$ 151.20

View Gem

1.20ct Orange Zircon, Round, VS

6 mm (calibrated)

$ 34.50

View Gem

0.93ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 18.58

View Gem

0.68ct White Rainbow Moonstone, Round, Transparent

6 mm (calibrated)

$ 26.11

View Gem

2.72ctw Red Rubies, Round, VS

6 mm (calibrated)

$ 293.76

View Gem

4.75ctw White Zircon, Round, VVS-VS

6 mm (calibrated)

$ 90.42

View Gem

1.90ctw Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 37.94

View Gem

1.17ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 21.50

View Gem

0.92ct Orange Hessonite Garnet, Round, VS

6 mm (calibrated)

$ 16.93

View Gem

Why Buy 6mm Round Gemstones from GemSelect?

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

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.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate
Enlarged Gemstone Image