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20 mm Round Gemstones: Topaz, Opals, Garnets, Sapphires, Rubies, Calibrated 20 mm Round Gems

20 mm Round Gemstones Weight
20 mm Round Gemstones Size
20 mm Round Gemstones Clarity
20 mm Round Gemstones Price

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ID: 621014
Weight: 24.86ct (total)
Size: 20 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 65.63
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ID: 715348
Weight: 26.47ct
Size: 20 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 254.11
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ID: 693083
Weight: 25.75ct
Size: 20 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 216.30
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ID: 473127
Weight: 21.88ct
Size: 20 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 21.08
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ID: 693088
Weight: 26.00ct
Size: 20 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 218.40
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ID: 519995
Weight: 33.02ct
Size: 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 38.80
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ID: 692704
Weight: 22.99ct
Size: 20 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 193.12
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ID: 692515
Weight: 26.80ct
Size: 20 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 225.12
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ID: 692706
Weight: 25.45ct
Size: 20 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 213.78
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ID: 491712
Weight: 66.33ct (total)
Size: 20 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 77.92
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ID: 483950
Weight: 25.70ct
Size: 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 37.66
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ID: 492431
Weight: 14.05ct
Size: 20 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 52.85
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ID: 645797
Weight: 17.88ct
Size: 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 10.08
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ID: 692705
Weight: 24.81ct
Size: 20 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 208.40
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FAQs

What types of gemstones are available in 20 mm round sizes?

We offer a wide variety of 20 mm round gemstones, including Diamonds, Sapphires, Rubies, Emeralds, Amethysts, Topaz, Opals, Aquamarines, Citrines, and Garnets. Each stone is carefully calibrated for consistent sizing and quality.

Are 20 mm round gemstones suitable for jewelry making?

Yes, 20 mm round gemstones are perfect for jewelry making. Their size and shape make them ideal for rings, pendants, earrings, and bracelets. They are also commonly used in halo or pavé settings for added brilliance.

What is a calibrated 20 mm round gemstone?

A calibrated 20 mm round gemstone is pre-cut to a specific size (20 mm in diameter) to ensure uniformity. This makes them easier to set into jewelry designs and ensures a consistent look across multiple pieces.

Can I find 20 mm round gemstones in a brilliant cut?

Absolutely! Many of our 20 mm round gemstones, including Diamonds, Sapphires, and Rubies, are available in a brilliant round cut. This cut maximizes the stone's sparkle and light reflection.

Are 20 mm round gemstones available in both precious and semi-precious varieties?

Yes, our collection includes both precious gemstones like Diamonds, Sapphires, Rubies, and Emeralds, as well as semi-precious stones such as Amethysts, Topaz, Opals, Aquamarines, Citrines, and Garnets.

How do I care for jewelry made with 20 mm round gemstones?

To maintain the beauty of your 20 mm round gemstones, clean them regularly with a soft cloth and mild soapy water. Avoid exposing them to harsh chemicals or extreme temperatures. Store them separately to prevent scratches.

Can 20 mm round gemstones be customized for specific designs?

Yes, our 20 mm round gemstones can be customized to fit your unique jewelry designs. Whether you need a specific type of stone or a particular setting, we can help you create the perfect piece.

Are 20 mm round gemstones a good choice for statement jewelry?

Absolutely! The size and brilliance of 20 mm round gemstones make them an excellent choice for creating bold, eye-catching statement pieces like cocktail rings, pendants, or earrings.

Do you offer certifications for 20 mm round gemstones?

Yes, many of our 20 mm round gemstones come with certifications from reputable gemological laboratories, ensuring their quality and authenticity.

Where can I buy 20 mm round gemstones?

You can purchase our 20 mm round gemstones directly from our online store. We offer a wide selection of calibrated stones, including Diamonds, Sapphires, Rubies, Emeralds, and more, all cut to perfection for your jewelry needs.

GemSelect Certified Store Reviews

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

Overall Rating -> 9 star ratings

Been using them for years! Very satisfied with the products.

Posted By PI SC in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I like the way your website shows us what stone were buying as well the easy way to navigate the site. also knowing the stones are real...

Posted By RED in January, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

the gems were smaller than I thought but I was at fault for not reading the complete discrimination

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have ordered from Genselect before and always had a great experience. My go to source!

Posted By Kycaver in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

love these guys been ordering since 2000 maybe

Posted By JHT in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good Hoping you will increase your inventory especially in the 6mmThanks

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Loved everything. High quality, quick shipping, and authentication included.

Posted By Chris in March, 2025
Source: Bizrate
Enlarged Gemstone Image