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 |
2.36ctw Pink Morganite, Oval, VS
8 x 6 mm (calibrated)
$ 129.28
6.29ct Orange Imperial Topaz, Cushion, VVS
13.7 x 8.3 mm
$ 2,923.59
2.90ct Yellow Golden Beryl, Round, VS
10 mm (calibrated)
$ 63.54
13.54ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 44.50
7.19ct Pink Morganite, Oval, Transparent
14.9 x 11 mm
$ 71.61
0.36ct Yellow Diamond, Round, VS
4.5 mm (calibrated)
$ 547.68
1.05ct Violet Spinel, Pear Shape, VS
7.4 x 5.8 mm
$ 175.13
43.72ct Blue Cat'S Eye Aquamarine, Oval, Translucent
22 x 19 mm
$ 670.60
0.17ct Yellow Diamond, Round, VS-SI
3.5 mm (calibrated)
$ 306.68
3.45ctw Multicolor Andalusite, Oval, VS-SI
6 x 4 mm (calibrated)
$ 170.10
4.62ctw Brown Diamond, Square, VS-SI
7.4 x 7.2 mm
$ 8,052.66
13.54ct Blue Aquamarine, Emerald Cut, VVS
19.3 x 9.7 mm
$ 3,708.61
0.14ctw White Diamond, Round, VVS-VS
2.7 mm (calibrated)
$ 254.36
7.12ct Orange Imperial Topaz, Oval, VVS-VS
14 x 9 mm (calibrated)
$ 3,309.38
0.98ct Purple Sapphire, Pear Shape, VS
6.6 x 5.3 mm
$ 516.81
1.58ct Purple Spinel, Marquise, VS
10.6 x 5.8 mm
$ 93.57
1.31ct Yellow Chrysoberyl, Pear Shape, VVS-VS
9 x 6 mm (calibrated)
$ 152.65
1.85ct Yellow Diamond, Round, SI
7.5 mm (calibrated)
$ 4,790.76
0.21ctw White Diamond, Round, VVS-VS
3 mm (calibrated)
$ 317.96
0.24ctw Black Diamond, Round, Opaque
3 mm (calibrated)
$ 114.17
10.80ct Pink Morganite, Pear Shape, Translucent
20.1 x 12.7 mm
$ 118.32
1.81ct Brown Diamond, Round, SI
7.5 mm (calibrated)
$ 4,687.18
32.10ct Turquoise Cat'S Eye Aquamarine, Oval, Translucent
22.5 x 16.3 mm
$ 575.49
9.27ct Pink Morganite, Trillion, Translucent
14 x 14 mm (calibrated)
$ 101.56
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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 
It was good. There was a large selection at prices I could afford.
Overall Rating -> 10
It's mostly good, only some item's are easier to find through the search than the menu
Overall Rating -> 9 
If you have motion picture, then I will be more satisfied with.
Overall Rating -> 10
I have been very happy with my prior purchases and enjoy the website experience.
Overall Rating -> 10
I loved it! Extensive inventory, great prices, I definitely will be buying from here again!
Overall Rating -> 10
It was easy to navigate
