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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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Blue Round Blue Gems
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0.51ct Blue Kyanite, Round, SI

4.5 mm (calibrated)

$ 12.70

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0.43ct Blue Kyanite, Round, VS-SI

4.3 mm

$ 10.71

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11.28ct Blue Color-Change Fluorite, Round, VS

14 mm (calibrated)

$ 308.96

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1.03ct Blue Kyanite, Round, SI

6 mm (calibrated)

$ 25.65

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0.03ct Blue Diamond, Round, VS

2.3 mm (calibrated)

$ 33.53

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0.40ctw Blue Apatite, Round, VS-SI

3.5 mm (calibrated)

$ 8.53

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0.89ctw Blue Zircon, Round, VVS-VS

4.5 mm (calibrated)

$ 23.66

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0.43ct Blue Kyanite, Round, SI

4 mm (calibrated)

$ 10.71

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1.07ctw Blue Sapphire, Round, VS

5 mm (calibrated)

$ 468.92

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0.46ct Blue Kyanite, Round, SI

4.3 mm

$ 11.45

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0.55ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 327.39

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0.60ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 404.19

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0.60ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 404.19

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0.68ct Blue Sapphire, Round, VVS-VS

5.5 mm (calibrated)

$ 404.78

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0.99ctw Blue Zircon, Round, VVS-VS

4.5 mm (calibrated)

$ 26.31

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11.48ct Blue Color-Change Fluorite, Round, VS

14 mm (calibrated)

$ 314.44

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0.05ct Blue Diamond, Round, VS-SI

2.3 mm (calibrated)

$ 49.80

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0.04ct Blue Diamond, Round, VS-SI

2.4 mm (calibrated)

$ 33.20

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0.44ct Blue Kyanite, Round, SI

4.3 mm

$ 10.96

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0.91ctw Blue Zircon, Round, VS

4.5 mm (calibrated)

$ 23.92

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5.97ctw Blue Topaz, Round, VS

9 mm (calibrated)

$ 41.80

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0.77ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 319.55

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0.64ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 15.94

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0.04ct Blue Diamond, Round, VS-SI

2.1 mm (calibrated)

$ 39.84

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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

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It was great! Great photos

Posted By Marcia in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I've been looking for.

Posted By Tree Dog in April, 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

Overall Rating -> 10 star ratings

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

Posted By Beman in September, 2025
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
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