Natural Untreated Gemstones
Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.
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Bi-color Natural Untreated Gemstones
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Black Natural Untreated Gemstones
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Blue Natural Untreated Gemstones
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Brown Natural Untreated Gemstones
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Golden Natural Untreated Gemstones
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Gray Natural Untreated Gemstones
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Green Natural Untreated Gemstones
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Multicolor Natural Untreated Gemstones
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Orange Natural Untreated Gemstones
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Pink Natural Untreated Gemstones
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Purple Natural Untreated Gemstones
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Red Natural Untreated Gemstones
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Turquoise Natural Untreated Gemstones
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Violet Natural Untreated Gemstones
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White Natural Untreated Gemstones
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Yellow Natural Untreated Gemstones
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
1.06Ct Raspberry Red Spinel, Cushion, Vvs
7 x 5.4 mm
$ 212.00
3.82Ctw Clear White Topaz, Square, Vs
4 x 4 mm (calibrated)
$ 32.09
3.25Ct White Topaz, Oval, Vvs-Vs
10 x 8 mm (calibrated)
$ 21.46
0.93Ct Light Pink Morganite, Oval, Vs
7.2 x 5.7 mm
$ 98.21
0.07Ct E Diamond, Marquise, Vvs
4.1 x 2.2 mm
$ 293.12
1.18Ct Light Pink Morganite, Pear Shape, Vs
8.1 x 6.3 mm
$ 62.30
0.33Ct Very Light Pink Morganite, Round, Vs
5 mm (calibrated)
$ 17.82
2.78Ctw Clear White Topaz, Cushion, Vvs-Vs
4.6 x 4.5 mm
$ 18.35
2.27Ctw Multicolor Andalusite, Round, Vs-Si
4 mm (calibrated)
$ 134.84
3.55Ct Light Pink Morganite, Oval, Transparent
12 x 10 mm (calibrated)
$ 46.86
11.54Ctw Clear White Topaz, Cushion, Vvs-Vs
12 x 10 mm (calibrated)
$ 92.32
1.10Ct Intense Pinkish Purple Sapphire, Pear Shape, Vs
7.4 x 5.3 mm
$ 699.86
0.07Ct D Diamond, Marquise, Vvs
4.1 x 2.1 mm
$ 293.12
1.38Ct Medium Purple Spinel, Cushion, Vvs
7.3 x 6.2 mm
$ 165.60
25.89Ct Light Green Blue Cat's Eye Aquamarine, Oval, Translucent
20 x 15 mm (calibrated)
$ 341.75
1.38Ct Earthy Yellow Beryl, Round, Vs
7 mm (calibrated)
$ 36.43
0.42Ct Very Light Pink Morganite, Pear Shape, Si
6.6 x 4.7 mm
$ 22.68
3.86Ctw Multicolor Andalusite, Round, Vs
3.7 mm
$ 204.28
3.65Ct Rose Pink Morganite, Pear Shape, Transparent
13.7 x 8.1 mm
$ 48.18
0.95Ct Deep Lavender Spinel, Cushion, Vs
5.9 x 5.6 mm
$ 62.70
1.32Ct Light Yellow Beryl, Round, Vvs
8 mm (calibrated)
$ 31.68
8.55Ctw Black Spinel, Round, Opaque
10 mm (calibrated)
$ 39.50
2.16Ctw Multicolor Andalusite, Round, Vs
4 mm (calibrated)
$ 142.56
25.16Ctw Black Spinel, Baguette, Opaque
17.6 x 8.2 mm
$ 239.80
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Why Buy Natural Untreated Gemstones from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
Why Choose Untreated Gemstones?
Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.
Natural Loose Untreated Gems Online
Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.
Untreated Gemstones for Jewelry
Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.
Popular Untreated Gemstone Types
Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.
Certified Natural Gemstones
Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.
Collector Quality Untreated Gems
Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.
Calibrated Untreated Gemstones
We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.
Worldwide Shipping from GemSelect
GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.
Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.
FAQs
What does untreated gemstone mean?
An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.
Are untreated gemstones more valuable?
Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.
How can I verify a gemstone is untreated?
Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.
Which gemstones are commonly sold untreated?
Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.
Are all untreated gemstones natural?
Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!
Overall Rating -> 10
Very good
Overall Rating -> 8 
Good prices
Overall Rating -> 10
So far So good
Overall Rating -> 10
Great for buying gemstones, came with authenticity certs. Will buy again someday!
Overall Rating -> 10
All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.
