Buy Big 15 Carat Natural Gemstones

Buy gems by weight. Shop from our extensive range of beautiful, natural 15-carat gems. Browse the largest selection of natural loose colored gemstones available in 15 carats. Our large gemstone selection includes many popular gem types, such as amethyst, citrine, topaz and turquoise, and lesser-known gems, including ruby-zoisite, ammolite and maw-sit-sit. From here, you can use our filters at the top or on the left-hand side to find gems by gem type, color, shape, cut and so on. For example, select 'tourmaline' to see all of our 15-carat tourmaline gems. Select 'multicolor' to shop for 15-carat multicolor gems. You can also filter by single, pairs, lots, faceted gems or cabochons by using the check boxes at the top.

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Gemstone Information

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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 -> 10

Todo muy bien en la compra ahora esperar recibir el pedido.

Posted By MAGSMX in August, 2023

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Overall Rating -> 10

Excellent site.

Posted By Boru in December, 2023

Source: Bizrate

Overall Rating -> 10

It was easy to navigate and I hope that the gem is as nice as the picture

Posted By 1 in April, 2024

Source: Bizrate

Overall Rating -> 10

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

Posted By NJD in September, 2023

Source: Bizrate

Overall Rating -> 10

I found it to be easy to browse and easy to use

Posted By Kyle in December, 2023

Source: Bizrate

Overall Rating -> 10

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

Posted By David W in May, 2023

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Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

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Overall Rating -> 10

Purchased for my granddaughter she was very pleased with it.

Posted By Charlie in April, 2024

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Overall Rating -> 10

Very good, very fast, everything as described.

Posted By B in October, 2023

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Overall Rating -> 10

My overall interaction with your website was pleasant, as always.

Posted By RJ in April, 2024

Source: Bizrate

Overall Rating -> 10

Very easy. I have purchased a few times before and was satisfied each time. Thank you.

Posted By Ray in December, 2023

Source: Bizrate

Overall Rating -> 10

Great selection of various gems, easy to navigate site

Posted By Josh in August, 2023

Source: Bizrate

Overall Rating -> 10

Website was incredibly easy and fast to use. Navigation and product outlay was simple and enjoyable to browse. Thank you and have a blessed day!

Posted By Devi in October, 2023

Source: Bizrate

Overall Rating -> 10

Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

Posted By DanM in November, 2023

Source: Bizrate

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Phone: +66-39601289

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Gemstones A-Z

Buy 15 ct Gemstones

10.4 carat Bi-color Ametrine, Marquise-Cut loose Ametrine from Brazil, Natural Untreated Gem, 25.8 x 10.2 mm

0.96 ct Blue Kyanite, 7 x 5.1 mm Oval Cut From Nepal

4.78 ct Oval Cut Strawberry Quartz, 13.9 x 9.9 mm From Russia

16.59 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 24.9 x 21 mm

0.95 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 3.9 x 3.1 mm

3.05 carat Oval Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 10.6 x 7.1 mm

0.48 ct Loose Yellow Sapphire, 3.3 x 3.1 mm Princess Cut From Tanzania

4.34 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.2 mm

1.45 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10.2 x 4.3 mm

24.01 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 20.2 x 15.1 mm

1.04 carat Trillion Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5.3 x 5.2 mm

2.47 ct Round Cut Andalusite, 3.8 mm From Brazil

3.03 carat Green Sapphire, Oval loose Sapphire from Tanzania, Natural Gems, 5.8 x 4.7 mm

21.29 ct Oval Rose Quartz, 22.8 x 13.2 mm From South Africa

0.73 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gems, 5.1 x 3.9 mm

0.61 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.1 x 4 mm

2.66 ct Purple Kunzite, 7 x 6.9 mm Octagon Cut From Afghanistan

0.58 ct Loose Violet Sapphire, 5.7 x 4.1 mm Oval Cut From Tanzania

8.82 ct Oval Black Opal, 19.3 x 13 mm From Ethiopia

0.76 ct Loose Violet Sapphire, 5.2 x 4.1 mm Oval Cut From Tanzania

0.66 ct Loose Orange Sapphire, 6.1 x 4.1 mm Oval Cut From Tanzania

12.55 carat Black Tourmaline, Cushion loose Tourmaline from Mozambique, Natural Untreated Gem, 16.2 x 12.1 mm

10 ct Pink Kunzite, 12.5 x 9.6 mm Octagon Cut From Afghanistan

2.08 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.3 x 8.7 mm

1.1 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 6.1 x 4.9 mm

5.07 carat Sky Blue Topaz, Half Drilled Briolette loose Topaz from Brazil, Natural Gems, 8.1 mm

0.91 ct Loose Round Cut Lapis Lazuli, 6 mm From Afghanistan

2.57 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7 x 7.4 mm

5.11 ct Yellow Quartz, 7.3 x 7.2 mm Carved From Brazil

4.27 ct Orange Sunstone, 11.7 x 9.8 mm Oval Cut From India

0.5 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.1 x 4 mm

18.49 carat Pear Rainbow Moonstone, loose Certified Rainbow Moonstone from the United States, Natural Untreated Gem, 21.1 x 17.6 mm

Gemstone Information

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Gemstone EDUCATION

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