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Home Gemstones Round Blue Gems

Round Blue Gemstones

Explore natural round blue gemstones selected for jewelry design, collecting and replacement stones. Browse loose gems by size, color tone, clarity and gem type to find the right blue centerpiece or accent.

Round Blue Gems Weight
Round Blue Gems Size
Round Blue Gems Clarity
Round Blue Gems Price
Round Blue Gems Treatment

Size Explained

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For Example: 6-7
For Example: 8-9
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Black
Blue Round Blue Gems
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12.64ct Blue Color-Change Fluorite, Round, VS

15 mm (calibrated)

$ 346.21

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1.09ctw Blue Sapphire, Round, VS

5 mm (calibrated)

$ 434.26

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4.55ctw Blue Topaz, Round, VS

8 mm (calibrated)

$ 34.90

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0.45ctw Blue Kyanite, Round, VS-SI

3.5 mm (calibrated)

$ 8.07

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0.98ctw Blue Zircon, Round, VS

4.5 mm (calibrated)

$ 25.76

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4.70ctw Blue Topaz, Round, VVS-VS

8 mm (calibrated)

$ 36.05

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0.55ctw Blue Kyanite, Round, VS-SI

3.7 mm

$ 9.86

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0.03ct Blue Diamond, Round, SI

2.1 mm (calibrated)

$ 36.52

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0.06ct Blue Diamond, Round, VS

2.4 mm (calibrated)

$ 59.76

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1.68ctw Blue Kyanite, Round, SI

5 mm (calibrated)

$ 41.83

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1.33ctw Blue Tanzanite, Round, Translucent

5 mm (calibrated)

$ 21.86

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0.71ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 17.68

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0.36ct Blue Kyanite, Round, SI

4 mm (calibrated)

$ 8.96

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0.59ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 331.21

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0.74ct Blue Kyanite, Round, SI

5.3 mm

$ 18.43

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0.81ct Blue Kyanite, Round, SI

5.2 mm

$ 20.17

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0.57ctw Blue Kyanite, Round, VS-SI

3.7 mm

$ 10.22

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0.38ct Blue Kyanite, Round, VS-SI

4.3 mm

$ 9.46

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1.07ct Blue Kyanite, Round, VS-SI

6 mm (calibrated)

$ 24.43

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4.72ctw Blue Topaz, Round, VVS-VS

8 mm (calibrated)

$ 36.20

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0.36ct Blue Kyanite, Round, SI

4.2 mm

$ 8.96

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11.82ct Blue Color-Change Fluorite, Round, VS

14 mm (calibrated)

$ 323.75

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4.25ctw Blue Topaz, Round, VVS-VS

8 mm (calibrated)

$ 32.60

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0.07ct Blue Diamond, Round, VS

2.6 mm (calibrated)

$ 78.24

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Why Buy Round Blue Gems from GemSelect?

Shop Loose Round Blue Gems

Round blue gemstones are a versatile choice for many jewelry styles, from classic solitaire rings to matched earrings, pendants and accent stone layouts. The round shape is popular because it works well in standard settings and presents color evenly across the face of the gem.

Choose the Right Shade of Blue

Blue gemstones can range from pale sky blue and bright teal-blue to deep navy and violet-blue tones. When comparing stones, consider whether you want a light, lively look or a richer, more saturated color. Photos, measurements and gem details can help you compare options before choosing a loose stone.

Popular Gem Types in Round Blue Stones

This category may include a variety of natural blue gem species such as sapphire, topaz, spinel, zircon, aquamarine, apatite, tourmaline, kyanite and other blue stones when available. Each gem type has its own color range, brilliance, durability and character, so the best choice depends on the jewelry design and how the piece will be worn.

Selection of loose round blue gemstones in different shades

Round Blue Gemstones for Jewelry Design

Round blue gems are especially useful for designers because they can be set alone or combined with diamonds, white gemstones, other blues or contrasting colors. Smaller round stones are often used for side stones, halo designs and earrings, while larger rounds can become the main feature in a custom ring or pendant.

What to Compare Before Buying

Before selecting a gemstone, review the millimeter size, carat weight, color, clarity, cut style and any listed treatment information. For calibrated settings, millimeter dimensions are often more important than carat weight because different gem materials can have different densities and depths.

Round Blue Gemstone FAQs

What types of gemstones are available in round blue colors?

Common round blue gemstones can include sapphire, blue topaz, aquamarine, spinel, zircon, apatite, kyanite and tourmaline, depending on current availability. Each type offers a different balance of color, brilliance, hardness and price range.

Are round blue gemstones good for rings?

Many round blue gems can be used in rings, but suitability depends on the gem species and the intended wear. Harder stones are generally better for everyday rings, while more delicate gems may be better suited to occasional wear or protected settings.

Should I choose by carat weight or millimeter size?

For jewelry settings, millimeter size is usually the most important measurement because it determines fit. Carat weight is useful for comparison, but two gemstones of the same carat weight may have different face-up sizes depending on material and cut depth.

Can I match two round blue gemstones for earrings?

Yes, round blue gemstones are a popular choice for earrings. For the best match, compare diameter, color tone, saturation, clarity and cutting style, or look for stones listed as pairs when available.

What makes round blue gemstones so popular?

The round shape is timeless, easy to design around and often available in many sizes. Combined with blue’s broad appeal, round blue gems are practical for both traditional and modern jewelry designs.

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

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Maneuvering through the website was easy and enjoyable. I have ordered from GemSelect before and that experience was also pleasant.

Posted By Willow in August, 2026
Source: Bizrate
Enlarged Gemstone Image