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 |
11.87Ctw Warm White Topaz, Oval, Vvs-Vs
12 x 10 mm (calibrated)
$ 94.96
1.10Ct Deep Purple Spinel, Cushion, Vs
6.4 x 5.6 mm
$ 132.00
0.58Ct Light Pink Spinel, Cushion, Vvs-Vs
5 x 4.5 mm
$ 48.72
7.68Ct Light Pink Morganite, Oval, Transparent
14.9 x 10.8 mm
$ 92.16
2.19Ct Light Yellow Golden Beryl, Oval, Vvs-Vs
10 x 8 mm (calibrated)
$ 72.28
0.94Ct Cream Morganite, Pear Shape, Vvs
8 x 6 mm (calibrated)
$ 49.63
0.06Ct E Diamond, Marquise, Vvs
4 x 2 mm (calibrated)
$ 251.25
1.02Ct Greenish Yellow Chrysoberyl, Pear Shape, Vvs
7.4 x 5.2 mm
$ 143.22
1.02Ct Light Neutral Orange Morganite, Oval, Vs
8 x 6 mm (calibrated)
$ 74.05
0.23Ctw H Diamond, Round, Vvs-Vs
3 mm (calibrated)
$ 495.40
1.34Ct Grey Purple Spinel, Cushion, Vs
6.2 x 5.4 mm
$ 111.72
2.55Ctw Clear White Topaz, Cushion, Vvs-Vs
4.6 x 4.5 mm
$ 16.84
0.81Ct Grey Purple Spinel, Cushion, Vvs-Vs
5.6 x 5 mm
$ 34.90
2.60Ctw Clear White Topaz, Cushion, Vvs-Vs
4.5 x 4.5 mm
$ 17.16
1.36Ct Medium Violet Spinel, Cushion, Vvs-Vs
6.6 x 6 mm
$ 113.10
13.93Ctw Black Spinel, Heart, Opaque
12 x 12 mm (calibrated)
$ 91.94
0.98Ct Flamingo Pink Morganite, Pear Shape, Vvs-Vs
10.4 x 5.7 mm
$ 71.15
21.45Ctw Black Spinel, Fancy, Opaque
18.2 x 12 mm
$ 141.58
4.33Ct Light Pink Morganite, Oval, Transparent
13 x 9 mm (calibrated)
$ 21.65
14.22Ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 56.32
0.71Ct Medium Grey Cat's Eye Alexandrite, Oval, Opaque
6.3 x 4.5 mm
$ 177.50
1.25Ct Medium-Light Pink Morganite, Pear Shape, Vvs-Vs
10.3 x 6.1 mm
$ 115.50
4.40Ctw Clear White Topaz, Cushion, Vvs-Vs
4.6 x 4.5 mm
$ 29.04
1.57Ctw Multicolor Andalusite, Oval, Vs
5 x 3 mm (calibrated)
$ 101.05
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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 
easy site to navigate
Overall Rating -> 10
selection was broad and the check out was quick. Great site
Overall Rating -> 10
I have been very happy with my prior purchases and enjoy the website experience.
Overall Rating -> 8 
Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use
Overall Rating -> 9 
It was great!
Overall Rating -> 10
My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.
