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Round Opal Gemstones

Discover natural round opal gemstones, precision-cut for brilliance and perfect symmetry in fine jewelry designs.

Round Opal Gems Weight
Round Opal Gems Size
Round Opal Gems Clarity
Round Opal Gems Price

Size Explained

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For Example: 6-7
For Example: 8-9
Bi-color
Black
Blue
Brown
Golden
Gray
Green
Multicolor Round Opal Gems
Orange Round Opal Gems
Pink
Purple
Red
Turquoise
Violet
White
Yellow
Single
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Lots
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0.87Ct Multicolor Opal, Round, Transparent

7 mm (calibrated)

$ 21.71

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0.64Ct Multicolor Chocolate Opal, Round, Translucent

6 mm (calibrated)

$ 21.12

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0.84Ct Multicolor Chocolate Opal, Round, Translucent

8 mm (calibrated)

$ 33.26

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3.04Ctw Multicolor Opal, Round, Transparent

6.5 mm (calibrated)

$ 85.51

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5.12Ctw Multicolor Opal, Round, Translucent

8 mm (calibrated)

$ 189.24

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1.92Ctw Multicolor Opal, Round, Translucent

5 mm (calibrated)

$ 54.01

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5.09Ctw Multicolor Opal, Round, Transparent

8 mm (calibrated)

$ 171.02

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5.32Ctw Multicolor Opal, Round, Translucent

6.5 mm (calibrated)

$ 196.63

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2.07Ctw Multicolor Opal, Round, Transparent

7 mm (calibrated)

$ 61.24

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0.71Ct Multicolor Opal, Round, Transparent

6.5 mm (calibrated)

$ 17.32

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0.85Ct Multicolor Opal, Round, Transparent

7 mm (calibrated)

$ 25.15

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1.10Ct Multicolor Opal, Round, Translucent

7 mm (calibrated)

$ 32.54

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8.15Ctw Multicolor Opal, Round, Translucent

8 mm (calibrated)

$ 301.22

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1.47Ct Multicolor Black Opal, Round, Opaque

8.5 mm (calibrated)

$ 51.45

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1.03Ct Multicolor Opal, Round, Translucent

7 mm (calibrated)

$ 28.98

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4.71Ctw Multicolor Opal, Round, Translucent

8 mm (calibrated)

$ 174.08

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4.55Ct Multicolor Black Opal, Round, Opaque

12 mm (calibrated)

$ 163.80

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3.11Ct Multicolor Boulder Opal, Round, Opaque

9 mm (calibrated)

$ 15.55

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2.03Ctw Multicolor Opal, Round, Transparent

7 mm (calibrated)

$ 60.05

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0.86Ct Multicolor Opal, Round, Transparent

7 mm (calibrated)

$ 21.26

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1.22Ct Multicolor Opal, Round, Opaque

8 mm (calibrated)

$ 48.31

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4.26Ct Multicolor Black Opal, Round, Opaque

12 mm (calibrated)

$ 149.53

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1.01Ct Multicolor Opal, Round, Transparent

7 mm (calibrated)

$ 29.87

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3.82Ct Multicolor Black Opal, Round, Opaque

11 mm (calibrated)

$ 134.08

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Why Buy Round Opal Gems from GemSelect?

Natural Round Opal Gemstones

Our round opal gemstones are 100% natural and carefully selected for color, play-of-color, and cutting quality, making them ideal for fine jewelry and collections.

Round Cut Opals for Jewelry

The round cut is one of the most versatile shapes in jewelry, offering excellent brilliance and balance. Round opals are especially popular for rings, earrings, and pendants.

Round Opal Gemstones for Jewelry Making

Loose Round Opal Stones

Buying loose round opal stones allows complete design freedom. Choose the size, color pattern, and transparency that best fits your custom jewelry project.

Calibrated Round Opals

Calibrated round opals are available in standard sizes such as 5 mm, 6 mm, and 7 mm, making them easy to set into pre-made jewelry settings.

Play-of-Color in Round Opals

Round opals showcase play-of-color beautifully, with flashes of red, green, blue, and orange distributed evenly across the stone’s surface.

Round Opals for Custom Rings

The symmetrical shape of round opals makes them a favorite for engagement rings and statement rings, offering a balanced and elegant appearance.

Wholesale Round Opal Gemstones

We offer wholesale round opal gemstones for jewelers and designers, with competitive pricing on multi-stone and bulk purchases.

Learn more about opal types, properties, and care on our Opal Information Page.

FAQs

Are your round opal gemstones natural?

Yes, all round opal gemstones sold by GemSelect are 100% natural, with any treatments fully disclosed.

What jewelry is best suited for round opals?

Round opals are ideal for rings, earrings, pendants, and engagement-style designs due to their symmetry and balanced appearance.

Do you sell calibrated round opals?

Yes, we offer calibrated round opals in standard millimeter sizes to fit common jewelry settings.

How durable are round opal gemstones?

Opals typically rank 5.5-6.5 on the Mohs scale, making them suitable for jewelry with proper care and protective settings.

Can I buy round opal gemstones in bulk?

Yes, bulk and wholesale options are available for jewelers and collectors looking for multiple matching round opal stones.

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

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 2025
Source: Bizrate
Enlarged Gemstone Image