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3 mm Round Blue Gemstones: Sapphire, Tanzanite, Topaz, Zircon Stones and More in Round Cut

3 mm Round Blue Gemstones: Sapphire, Tanzanite, Topaz, Zircon Stones and More in Round Cut

Explore our exquisite collection of 3 mm round blue gemstones, perfect for jewelry making and collectors. Our selection includes stunning 3 mm round sapphire, 3 mm round blue topaz, and 3 mm round aquamarine, along with rare gems like tanzanite, kyanite, and blue zircon. Whether you're searching for loose 3 mm blue gems or high-quality round 3 mm blue gemstones, we have the perfect stones to bring your designs to life.

3 mm Round Blue Gemstones Weight
3 mm Round Blue Gemstones Size
3 mm Round Blue Gemstones Clarity
3 mm Round Blue Gemstones Price

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ID: 702705
Weight: 0.12ct
Size: 3 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 146.66
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GemSelect Certified Store Reviews

GemSelect: Over 18 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

I'm happy.

Posted By Ray in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I enjoy doing buisness with GemSelect. It is always a pleasure and you get what you ordered!

Posted By Ballpark in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

went well

Posted By Doug in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring

Posted By Desertchick in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love browsing the site and everything is easy to find. There is just so much I get lost for hours. Sometimes I wish there were videos of some gems, but other than that I love shopping with GemSelect and I have referred the site to many people many times. I work in the jewelry industry myself and I love to show off what Ive had made with my gems from GemSelect! Thank you

Posted By Antennaesglow in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience shopping and finding what I was looking for, the only improvement I could think of would be allowing to filter more than one size at a time.

Posted By Tlicious04 in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Im not a jeweler, I buy for my personal use. My dad was a jewelry maker and I love gemstones.

Posted By Andie in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Appreciated the selection. Jadeite is hard to find under $100. Website has alot of variety.

Posted By Jess in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been buying gems for several years off and on and love their selection and great low prices. I started out wanting to get an example of each type of gem but after looking at all the types of gems and reading about them I realize it is almost impossible for me to do. It took me years just to read about them all. Gem Select is the best gem site you can find. For information or to buy. Steve M.

Posted By Stevee M. in January, 2025
Source: Bizrate

Why Choose Cushion Cut Gemstones for Engagement Rings?

The cushion cut is one of the most popular styles for engagement rings due to its timeless elegance and versatility. Known for its soft, rounded edges and vintage charm, a cushion cut engagement gemstone brings a unique balance of brilliance and sophistication. Whether you prefer a Sapphire cushion cut gemstone or a Ruby cushion cut gemstone, this cut highlights the beauty of colored gemstones perfectly.

Popular Cushion Cut Gemstone Options

Our collection includes a variety of cushion cut gemstones for engagement rings, from vibrant options like Emerald cushion cut gemstones to softer, romantic choices such as Morganite cushion cut gemstones. You’ll also find stunning Topaz cushion cut gemstones and the dazzling brilliance of Aquamarine cushion cut gemstones, ensuring you can find the perfect stone to match your style and personality.

Types of Cushion Cut Designs

Not all cushion cut gems are the same. We offer a range of styles, including antique cushion cut gemstones, modified cushion cut gemstones, and the modern cushion brilliant cut. These variations allow you to choose a stone that matches your preference, whether you're seeking a vintage-inspired engagement ring or a more contemporary design.

Creating Your Perfect Engagement Ring

When selecting cushion cut engagement gemstone rings, consider the setting that complements your stone. Halo, solitaire, and vintage-inspired settings are just a few options. Explore our wide selection of gemstones for engagement rings to design a ring that’s truly one of a kind.

Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

I'm happy.

Posted By Ray in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I enjoy doing buisness with GemSelect. It is always a pleasure and you get what you ordered!

Posted By Ballpark in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

went well

Posted By Doug in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring

Posted By Desertchick in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love browsing the site and everything is easy to find. There is just so much I get lost for hours. Sometimes I wish there were videos of some gems, but other than that I love shopping with GemSelect and I have referred the site to many people many times. I work in the jewelry industry myself and I love to show off what Ive had made with my gems from GemSelect! Thank you

Posted By Antennaesglow in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience shopping and finding what I was looking for, the only improvement I could think of would be allowing to filter more than one size at a time.

Posted By Tlicious04 in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Im not a jeweler, I buy for my personal use. My dad was a jewelry maker and I love gemstones.

Posted By Andie in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Appreciated the selection. Jadeite is hard to find under $100. Website has alot of variety.

Posted By Jess in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been buying gems for several years off and on and love their selection and great low prices. I started out wanting to get an example of each type of gem but after looking at all the types of gems and reading about them I realize it is almost impossible for me to do. It took me years just to read about them all. Gem Select is the best gem site you can find. For information or to buy. Steve M.

Posted By Stevee M. in January, 2025
Source: Bizrate

FAQ's

What are the most popular 3 mm round blue gemstones?

The most popular 3 mm round blue gemstones include sapphire, blue topaz, aquamarine, tanzanite, lapis lazuli, blue zircon, iolite, kyanite, spinel, and apatite. These blue stones are available in various shades, from deep royal blue to vibrant neon blue.

How can I use 3 mm blue gemstones in jewelry?

3 mm blue gemstones are perfect for rings, earrings, bracelets, and pendants. Their small size makes them ideal for accent stones, stacking jewelry, or intricate settings. Many jewelers use 3 mm round blue zircon, sapphire, and aquamarine to create delicate and elegant designs.

What is the difference between 3 mm round sapphire and 3 mm round blue topaz?

3 mm round sapphire is a highly durable gemstone with a deep blue color, often associated with luxury. 3 mm round blue topaz, on the other hand, is a more affordable gemstone with a lighter blue hue. Both gemstones are excellent choices for fine jewelry.

Are 3 mm round blue gemstones natural or synthetic?

Many 3 mm blue gemstones, such as sapphire, tanzanite, and zircon, are available in both natural and lab-created versions. Natural gemstones are formed over millions of years, while synthetic ones are created in a lab with the same chemical composition. Both options offer beauty and durability.

How do I care for my 3 mm blue stones?

To maintain the brilliance of your 3 mm round blue gemstones, clean them with mild soap and warm water. Avoid harsh chemicals and extreme heat, especially for softer stones like apatite and kyanite. Store your gemstones separately to prevent scratches.

Where can I buy high-quality 3 mm round blue gemstones?

You can find a wide selection of high-quality 3 mm round blue gemstones, including sapphire, aquamarine, blue zircon, and spinel, from trusted gemstone retailers. Look for reputable sellers that provide certification and detailed descriptions of their blue 3 mm gems.

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