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 |
0.20ct Brown Diamond, Round, VVS-VS
3.7 mm
$ 365.13
1.44ct Purple Spinel, Cushion, VS
6.4 x 5.7 mm
$ 110.44
1.03ct Purple Sapphire, Cushion, VS
7 x 5 mm (calibrated)
$ 543.18
3.07ctw White Topaz, Cushion, VVS-VS
4.6 x 4.5 mm
$ 16.82
1.27ct Purple Spinel, Cushion, VVS-VS
6.3 x 6.1 mm
$ 104.36
3.17ct Brown Rutile Topaz, Pear Shape, Transparent
9 x 9 mm (calibrated)
$ 65.78
6.03ct Pink Morganite, Oval, Translucent
12.9 x 9.8 mm
$ 66.07
0.10ctw Black Diamond, Square, Opaque
2 x 2 mm (calibrated)
$ 49.80
4.05ct Brown Rutile Topaz, Pear Shape, Transparent
13.1 x 8.2 mm
$ 84.04
1.51ct Purple Spinel, Cushion, VVS-VS
6.5 x 6.3 mm
$ 106.73
0.18ctw White Diamond, Round, VVS-VS
2.9 mm (calibrated)
$ 327.04
1.10ct Violet Spinel, Cushion, VVS
6 x 6 mm (calibrated)
$ 61.54
1.64ctw Multicolor Andalusite, Oval, VS
5 x 3.1 mm
$ 87.61
1.13ct Green Chrysoberyl, Pear Shape, VVS
7.1 x 5.9 mm
$ 108.97
1.20ct Yellow Beryl, Trillion, VVS
8 x 8 mm (calibrated)
$ 23.90
2.91ctw White Topaz, Cushion, VVS-VS
4.6 x 4.5 mm
$ 15.94
0.59ct Black Diamond, Round, Opaque
5 mm (calibrated)
$ 470.11
2.02ct Red Spinel, Pear Shape, VS-SI
7.8 x 7.7 mm
$ 2,514.90
3.72ct White Topaz, Heart, VVS-VS
10 x 10 mm (calibrated)
$ 30.88
1.07ct Purple Spinel, Oval, VVS
7.1 x 5.4 mm
$ 110.22
0.86ct Yellow Beryl, Oval, VS
8 x 6 mm (calibrated)
$ 17.13
0.14ct White Diamond, Round, VVS
3.4 mm
$ 235.06
3.33ctw Multicolor Andalusite, Round, VS
3.5 mm (calibrated)
$ 122.00
3.24ct Yellow Rutile Topaz, Cushion, Transparent
10.8 x 7.1 mm
$ 67.23
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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 
I was able to find what I wanted very easily!
Overall Rating -> 10
I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.
Overall Rating -> 10
Easy to use website
Overall Rating -> 9 
The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.
Overall Rating -> 10
I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items
Overall Rating -> 8 
First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.
