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

Selection and purchasing online was very easy

Posted By Aggy in January, 2024

Source: Bizrate

Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

Source: Bizrate

Overall Rating -> 10

Had a problem ordering first time. Someone from Gem Select reached out to me and cleared problem and I made purchase.

Posted By Myrtle in February, 2024

Source: Bizrate

Overall Rating -> 10

Great selection and excellent website.

Posted By JBW in October, 2023

Source: Bizrate

Overall Rating -> 10

Great website and information

Posted By Moonshot in December, 2023

Source: Bizrate

Overall Rating -> 10

The site is very easy to use and I will continue to shop here. The quality is superb

Posted By Genia in January, 2024

Source: Bizrate

Overall Rating -> 10

No issues at all. It was great.

Posted By LJXK in May, 2023

Source: Bizrate

Overall Rating -> 10

I have used gm select a while ago and was always pleased with the products

Posted By Jaytee in November, 2023

Source: Bizrate

Overall Rating -> 8

purchased birthstones to be mounted into stud earrings as a gift for a friend's gift

Posted By MI photo in May, 2023

Source: Bizrate

Overall Rating -> 10

Very good, very fast, everything as described.

Posted By B in October, 2023

Source: Bizrate

Overall Rating -> 10

Easy to find the stones I was looking for. Always good quality stones

Posted By Erin in June, 2023

Source: Bizrate

Overall Rating -> 10

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023

Source: Bizrate

Overall Rating -> 10

Always an easy experience using Gem select.

Posted By Jeff in November, 2023

Source: Bizrate

Overall Rating -> 10

Love the variety of stones, sizes and the prices

Posted By Dorita in March, 2024

Source: Bizrate

Gemstones A-Z

Buy Round Shape 15 mm Gems

1.8 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 8.2 mm

33.02 carat Pear Obsidian, loose Certified Obsidian from Mexico, Natural Untreated Gem, 29.5 x 21.2 mm

19.64 carat Pear Ruby-Zoisite, loose Certified Ruby-Zoisite from Tanzania, Natural Untreated Gem, 20.2 x 14.1 mm

4.1 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6.1 x 4.1 mm

8.23 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gems, 13.8 x 8.1 mm

19.13 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.2 x 14.1 mm

1.48 carat Red Malaya Garnet, Marquise Cut loose Malaya Garnet from Tanzania, Natural Untreated Gem, 9.9 x 5 mm

0.58 ct Baguette Cut Color-Change Diaspore, 4.6 x 4.5 mm From Turkey

0.91 ct Blue Apatite, 4.6 x 4 mm Oval Cut From Madagascar

9.44 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 12.2 x 10 mm

6 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 11.9 x 9.6 mm

29.36 ct Loose Pear Bloodstone, 23.1 x 18 mm From Madagascar

7.44 ct Green Agate, 13.3 x 11.3 mm Oval Cut From India

2.31 ct Yellow Quartz, 9.3 x 9.3 mm Carved From Brazil

0.8 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 5.1 x 5 mm

0.74 ct Loose Yellow Sapphire, 3.7 x 3.7 mm Princess Cut From Tanzania

8.85 carat Pink Topaz, Cushion loose Topaz from Brazil, Natural Gems, 11 x 9 mm

0.83 carat Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.9 x 5.1 mm

2.54 ct Oval Concave Cut Smoky Quartz, 10.1 x 7.9 mm From Brazil

1.6 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 11.2 x 4.5 mm

14.95 ct Multicolor Jasper, 20.5 x 18 mm Odd Shaped From Indonesia

4.08 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8.2 x 6.1 mm

3.44 ct Multicolor Mystic Quartz, 8.1 mm Diamond Cut From Brazil

1.25 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 9.6 x 7.5 mm

7.59 ct Marquise Slice Ruby in Fuchsite, 17.2 x 8.9 mm From Ethiopia

0.79 carat Orange Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 7.7 x 5.8 mm

11.8 ct Green Amazonite, 10.3 x 10.2 mm Cushion Cut From Madagascar

4.65 carat Yellow Citrine, Emerald Cut loose Citrine from Bolivia, Natural Untreated Gem, 12.1 x 7.8 mm

3.08 carat Sky Blue Topaz, Heart loose Topaz from Brazil, Natural Gem, 8.9 x 9 mm

4.4 ct Round Rutile Quartz, 11.1 mm From India

1.41 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6 x 6 mm

3.27 ct Yellow Andesine Labradorite, 10.3 x 8.2 mm Oval Cut From Congo

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