Buy 15 mm Round Calibrated Gemstones from GemSelect

How are 15 mm Round Shape Gems Sold ?

GemSelect’s Round Shape Calibrated 15mm gems for new designs or replacements available at competitive prices. Our selections are available as single stones, pairs, and lots in this large calibrated size. Select from Faceted Gemstones, Drilled-Spheres, and Sphere-Ball Cut Jewels in a variety of both semiprecious and precious stones.

We have a large selection of Cabochons available in 15 mm Round and Calibrated Size too!

What are Good Designs for 15mm Round Gems?

We suggest using round gemstones of this size in necklace designs, earrings, large rings, bracelets, and as pendants or elements to a larger arrangement. Our selections include many different materials with varying properties and design applications and always at affordable prices.

What are Good Ideas for GemSelects 15 mm Round Shape?

GemSelect's round stones can create extraordinary pieces when combined in multi-color or single color compositions. A 15mm stone can be striking on its own when used as a pendant enabling the color of the gem and metal used make the beauty in the design. For rings, we find a 15mm center stone in a single stone composition beautiful.

As always, jewelry is the most popular gift for your loved ones as Anniversary gifts, and our quality stones are sure to impress your customers allowing them to find something genuinely stunning for their special occasions. Another excellent idea for all Natural Gemstone Jewelry is Birthstone Gifts; please check out our page for information on which gem type to select.

Details About Calibrated Sizes.

GemSelect’s Round 15mm Calibrated gemstones range in size from 15.5mm - 14.4mm in all of our selected precious and semi-precious stones. Our inventory includes large amounts of Color-Change Fluorite, Smoky Quartz, Rutile Quartz, and many other unique jewels of this 15mm size.

GemSelect Welcomes Your Questions and Suggestions.

Please contact us if you have any questions, comments, or suggestions directly at help@gemselect.com. Thank you for choosing GemSelect!

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Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

Very detailed and great pictures

Posted By Alexandrite in November, 2023

Source: Bizrate

Overall Rating -> 10

LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

Posted By APPS in April, 2024

Source: Bizrate

Overall Rating -> 10

Easy and fast

Posted By Mark in February, 2024

Source: Bizrate

Overall Rating -> 10

Love gemselect

Posted By Joshua Howard in March, 2024

Source: Bizrate

Overall Rating -> 10

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

Source: Bizrate

Overall Rating -> 9

It went well

Posted By Rob in December, 2023

Source: Bizrate

Overall Rating -> 10

Everything was fine.

Posted By Matt in March, 2024

Source: Bizrate

Overall Rating -> 9

An it was good.

Posted By Miguel in June, 2023

Source: Bizrate

Overall Rating -> 9

I was in the market for birthstones for a lil gift project im doing. I'm no expert in gems or what not but the quality as far as i can tell seems to be spot on.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

The website design is a bit finicky for mobile, but Im sure its most likely just a mobile issue. Amazing selection of products, great prices.

Posted By Kuba in December, 2023

Source: Bizrate

Overall Rating -> 9

Gemselect is a good website with a great selection of loose gems for sale. The prices are fairly decent, with the only negative being the cut quality of the gems. This is my go to retailer for gemstones and will continue to be, given that the packages arrive in a timely manner.

Posted By Lunchies in April, 2024

Source: Bizrate

Overall Rating -> 10

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

Source: Bizrate

Overall Rating -> 9

GemSelect has a fantastic assortment of Semi-precious stones. I have not found any other web site with the variety you have.

Posted By RobDill in August, 2023

Source: Bizrate

Overall Rating -> 10

Purchasing from Gem Select was a pleasant and easy experience. The photos of the stones I was interested in were an accurate depiction of the stones I received. Ordering was easy and the items arrived within a week. Over all it was a very positive experience.

Posted By Dee in September, 2023

Source: Bizrate

Overall Rating -> 9

Easy to use. Limited supply of higher quality gemstones.

Posted By Newfguy in February, 2024

Source: Bizrate

Gemstones A-Z

Buy Round Shape 15 mm Gems

1.77 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.2 x 7.1 mm

1.29 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 12.2 x 7.4 mm

1.98 ct Round Tiger's Eye, 8.2 mm From Thailand

2.78 ct Yellow Sphene, 8.3 x 7 mm Oval Cut From Sri Lanka

0.48 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 5.9 x 4 mm

0.81 ct Oval Sillimanite Cat's Eye, 6 x 4.1 mm From Madagascar

1.68 ct Oval Tiger's Eye, 8.3 x 6.3 mm From Thailand

1.49 ct Oval Cut Peridot, 7 x 5.1 mm From China

6.1 ct Oval Tiger's Eye, 10.2 x 8.2 mm From Thailand

3.72 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gems, 8.2 mm

4.82 carat Swiss Blue Topaz, Trillion-Cut loose Topaz from Brazil, Natural Gems, 7 x 7.1 mm

0.55 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.2 x 4.1 mm

3.62 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8.2 x 6.2 mm

2.36 ct Oval Cut Andalusite, 6 x 4.1 mm From Brazil

2.6 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 9 x 7.1 mm

6.41 ct Green Agate, 9.3 x 8.6 mm Oval Cut From India

19.33 carat Pear Hematite, loose Certified Hematite from Brazil, Natural Untreated Gem, 20.7 x 13.6 mm

2.83 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 10 mm

1.11 ct Cushion Cut Color-Change Diaspore, 7.5 x 5.1 mm From Turkey

1.14 ct Pink Morganite, 6.9 mm Round Cut From Afghanistan

2.57 ct Oval Sillimanite Cat's Eye, 7.9 x 5.6 mm From Madagascar

2.79 ct Loose Baguette Labradorite, 9.1 x 7.3 mm From Madagascar

11.21 ct Oval Coral, 19.5 x 15.6 mm From Indonesia

1.41 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.1 x 3 mm

30.58 ct Oval Maw-Sit-Sit, 19.7 x 14.6 mm From Myanmar

6.48 ct Loose Pink Kunzite, 11.9 x 7.8 mm Octagon Cut From Afghanistan

0.86 ct Oval Chocolate Opal, 8.1 x 6 mm From Ethiopia

9.92 ct Round Labradorite, 10.2 mm From Madagascar

5.37 ct Pink Morganite, 13.3 x 12.7 mm Trillion Cut From Afghanistan

0.6 ct Loose Yellow Sapphire, 4.1 x 4.1 mm Square Cut From Tanzania

6.79 ct Trillion Onyx, 9.9 x 9.4 mm From Sri Lanka

4.92 ct Blue Star Sapphire, 7 x 5.2 mm Oval Cut From Thailand

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