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 have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

Posted By Bikerwalrus 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

Overall Rating -> 10

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J in December, 2023

Source: Bizrate

Overall Rating -> 10

Selection and purchasing online was very easy

Posted By Aggy in January, 2024

Source: Bizrate

Overall Rating -> 10

Pleasant.

Posted By Mk in November, 2023

Source: Bizrate

Overall Rating -> 10

Found the stone I wanted which was delivered quickly and met expectations.

Posted By GemGrammy in January, 2024

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

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

Posted By Kate in December, 2023

Source: Bizrate

Overall Rating -> 10

This is only the second time I have ordered from GemSelect. I am a prolific gemstone collector and I wish I had found this site sooner!

Posted By Beachcomber in September, 2023

Source: Bizrate

Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

Posted By Kickbass.2 in May, 2023

Source: Bizrate

Overall Rating -> 10

Easy to use.

Posted By Hope in March, 2024

Source: Bizrate

Overall Rating -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

Posted By Nick in March, 2024

Source: Bizrate

Overall Rating -> 10

Great Job today! No issues!

Posted By Samlovesgems777 in August, 2023

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 -> 10

The website was very easy to navigate. We appreciated the details about each gem, and the sort and search features of the website were helpful and easy to use.

Posted By AV in May, 2023

Source: Bizrate

Gemstone SHOP

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Gemstones A-Z

Buy 15 ct Gemstones

1.36 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5 x 4.9 mm

6.22 ct Pink Azotic Topaz, 12.1 x 10.2 mm Cushion Cut From Brazil

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

3.3 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10.3 x 6.3 mm

14.74 ct Oval Rainbow Moonstone, 19.6 x 13.7 mm From the United States

8.1 ct Oval Rutile Quartz, 15.1 x 11.1 mm From India

6.31 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.6 x 11 mm

1.5 ct Octagon Cut Color-Change Diaspore, 10 x 4.2 mm From Turkey

5.59 ct Loose Oval Agate, 11.9 x 10.2 mm From Indonesia

0.33 ct Blue Kyanite, 3.7 mm Round Cut From Nepal

4.57 ct Yellow Sillimanite, 8.9 x 6.9 mm Oval Cut From Sri Lanka

0.79 ct Loose White Sapphire, 4.5 mm Diamond Cut From Madagascar

7.54 carat Swiss Blue Topaz, Carved Flower loose Topaz from Brazil, Natural Gem, 12 x 11.8 mm

8.77 ct Fancy Fire Agate, 18.2 x 11.1 mm From Mexico

3.61 carat Pink Topaz, Round loose Topaz from Brazil, Natural Gem, 9.1 mm

32.97 ct Cushion Psilomelane Dendrite, 28.7 x 22.4 mm From Mexico

3.04 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 7.1 x 5.1 mm

8.11 ct Round Rutile Quartz, 13 mm From India

3.61 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10 x 7.9 mm

2.1 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 4.9 mm

4.05 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5.1 mm

2.99 carat Oval Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 8.1 x 6.1 mm

6.15 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 19.5 x 9.8 mm

1.1 carat Orange Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gems, 8.2 x 4.2 mm

13.46 ct Black Spinel, 12.1 x 11.8 mm Heart Rose Cut From Thailand

14.94 ct Oval Star Ruby, 15.1 x 13.6 mm From Madagascar

10.22 ct Round Concave Cut Smoky Quartz, 12.1 mm From Brazil

1.3 ct Oval Cut Rainbow Moonstone, 8 x 6.2 mm From the United States

4.22 ct Oval Spectrolite, 10.1 x 8.1 mm From Finland

10.12 ct Marquise Slice Ruby in Fuchsite, 19.2 x 9.8 mm From Ethiopia

0.88 ct Loose Pink Sapphire, 9.8 x 5.2 mm Odd Shaped From Madagascar

1.76 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4.5 x 3.7 mm

Gemstone Information

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Gemstone EDUCATION

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