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 |
2.09ctw Yellow Beryl, Oval, VVS-VS
8 x 6 mm (calibrated)
$ 52.04
0.80ct Yellow Morganite, Pear Shape, VS
8.2 x 5.7 mm
$ 35.86
2.95ctw White Topaz, Cushion, VVS-VS
4.6 x 4.5 mm
$ 16.17
4.54ctw White Topaz, Cushion, VVS-VS
4.6 x 4.6 mm
$ 24.87
0.21ct Brown Color-Change Sapphire, Fancy, VVS
6 x 3.3 mm
$ 17.43
0.14ctw White Diamond, Round, VVS-VS
2.7 mm (calibrated)
$ 254.36
0.85ct Yellow Beryl, Trillion, VVS-VS
7 x 7 mm (calibrated)
$ 20.32
2.31ctw Multicolor Andalusite, Round, VS-SI
4 mm (calibrated)
$ 113.89
0.87ct Purple Spinel, Cushion, VVS
5.7 x 4.2 mm
$ 72.21
6.54ct Turquoise Aquamarine, Cushion, Translucent
13.1 x 10.4 mm
$ 135.71
0.03ct Black Diamond, Round, Opaque
2 mm (calibrated)
$ 23.90
0.19ctw Black Diamond, Square, Opaque
2.1 x 2.1 mm
$ 94.62
1.03ct Purple Spinel, Cushion, VVS-VS
6 x 6 mm (calibrated)
$ 62.07
0.56ct Pink Spinel, Emerald Cut, VS-SI
6.5 x 3.7 mm
$ 116.20
5.66ct Pink Morganite, Oval, Translucent
14 x 10 mm (calibrated)
$ 62.01
0.62ct Yellow Beryl, Oval, VVS-VS
7 x 5 mm (calibrated)
$ 15.44
5.89ct Pink Morganite, Oval, Transparent
12.7 x 10 mm
$ 58.66
0.90ct Pink Morganite, Pear Shape, VVS
10.4 x 4.9 mm
$ 78.88
0.71ct Green Cat'S Eye Alexandrite, Oval, Opaque
5.6 x 3.9 mm
$ 147.33
1.10ct Red Spinel, Cushion, VS
7 x 5.7 mm
$ 132.00
6.99ct Orange Imperial Topaz, Cushion, VVS
15.2 x 8.5 mm
$ 3,898.74
1.19ct Pink Morganite, Pear Shape, VS-SI
8.8 x 6.6 mm
$ 52.15
3.99ctw White Topaz, Square, VS
4 x 4 mm (calibrated)
$ 30.59
0.45ct Pink Morganite, Round, VS
5.2 mm
$ 20.17
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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 
Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!
Overall Rating -> 10
Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.
Overall Rating -> 10
I was able to find what I've been looking for.
Overall Rating -> 10
Easy process.
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
overall great
