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 |
2.79ctw White Topaz, Cushion, VVS-VS
4.6 x 4.5 mm
$ 15.29
0.03ct Black Diamond, Round, Opaque
2.1 mm (calibrated)
$ 10.27
0.93ct Red Spinel, Pear Shape, VS-SI
8.6 x 5.6 mm
$ 192.98
0.27ct Black Diamond, Square, Opaque
3.2 x 3.1 mm
$ 134.46
0.09ct Black Diamond, Round, Opaque
2.7 mm (calibrated)
$ 30.81
6.24ct White Topaz, Cushion, VS
12 x 10 mm (calibrated)
$ 41.43
0.67ct White Topaz, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 4.67
8.62ctw White Topaz, Heart, VS
10 x 10 mm (calibrated)
$ 71.55
0.35ct Pink Morganite, Round, VS
5 mm (calibrated)
$ 14.53
1.41ct Purple Spinel, Cushion, VS
6.8 x 5.5 mm
$ 70.48
0.17ctw White Diamond, Round, VVS-VS
2.7 mm (calibrated)
$ 308.86
0.80ct Pink Morganite, Oval, VS
7.3 x 5.4 mm
$ 35.06
0.27ctw White Diamond, Round, VVS-VS
3.2 mm
$ 438.80
3.23ct Yellow Rutile Topaz, Pear Shape, Transparent
12.5 x 8.2 mm
$ 67.02
3.86ct Pink Morganite, Marquise, Transparent
16 x 8 mm (calibrated)
$ 42.29
2.94ctw White Topaz, Cushion, VVS-VS
4.6 x 4.5 mm
$ 16.10
4.27ctw White Topaz, Cushion, VS
4.5 x 4.5 mm
$ 23.40
0.55ct Pink Morganite, Pear Shape, VVS-VS
7.3 x 4.5 mm
$ 48.21
0.71ct Yellow Beryl, Trillion, VVS
7 x 7 mm (calibrated)
$ 14.14
0.46ct Pink Morganite, Oval, VVS-VS
6.9 x 4.1 mm
$ 27.72
0.03ct White Diamond, Round, VVS
2 mm (calibrated)
$ 68.48
0.57ct Pink Morganite, Pear Shape, VS
7.8 x 4.3 mm
$ 34.35
19.41ctw Black Spinel, Oval, Opaque
16 x 12 mm (calibrated)
$ 74.43
0.89ct Yellow Chrysoberyl, Pear Shape, VVS
8 x 5.3 mm
$ 102.99
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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 
hassle free experience.
Overall Rating -> 10
selection was broad and the check out was quick. Great site
Overall Rating -> 10
This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.
Overall Rating -> 10
Easy to use website
Overall Rating -> 10
The website was very easy to use.
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.
