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 |
1.86ct Pink Morganite, Pear Shape, VS
11.8 x 6.3 mm
$ 142.64
1.17ct Violet Spinel, Cushion, VVS
5.6 x 5.6 mm
$ 194.22
2.51ct Yellow Golden Beryl, Oval, VVS
10 x 8 mm (calibrated)
$ 68.76
1.03ct Yellow Chrysoberyl, Pear Shape, VVS
8.4 x 5.2 mm
$ 120.03
0.25ctw White Diamond, Round, VVS-VS
3 mm (calibrated)
$ 378.51
127.45ct Purple Star Ruby, Oval, Opaque
28.6 x 26.2 mm
$ 1,745.43
5.55ct Orange Imperial Topaz, Pear Shape, VVS
16.5 x 7.1 mm
$ 3,095.57
1.26ct Purple Spinel, Oval, VS
7.7 x 5.7 mm
$ 153.39
2.37ctw Multicolor Andalusite, Round, VS-SI
4 mm (calibrated)
$ 116.85
3.23ctw Multicolor Andalusite, Round, VS-SI
4 mm (calibrated)
$ 143.42
0.58ct Pink Spinel, Oval, VS
5.3 x 4.2 mm
$ 1,155.36
5.00ct Brown Diamond, Cushion, VS
9 x 9 mm (calibrated)
$ 9,203.04
5.18ct Blue Aquamarine, Oval, VVS
10.4 x 9.8 mm
$ 987.48
1.34ct Purple Spinel, Cushion, VS
6.7 x 5.9 mm
$ 99.35
0.23ctw Black Diamond, Square, Opaque
2.6 x 2.5 mm
$ 114.54
12.97ctw Black Spinel, Heart, Opaque
12 x 12 mm (calibrated)
$ 71.06
1.24ct Purple Spinel, Cushion, VS
7 x 5.8 mm
$ 148.20
0.06ct Black Diamond, Round, Opaque
2.3 mm (calibrated)
$ 15.94
1.84ct Pink Morganite, Round, VS
7.5 mm (calibrated)
$ 141.12
0.76ct Pink Morganite, Pear Shape, VS
9.8 x 4.7 mm
$ 66.62
1.27ct Purple Spinel, Pear Shape, VVS-VS
8.6 x 5.6 mm
$ 86.97
1.68ctw Multicolor Andalusite, Oval, VS
5 x 3 mm (calibrated)
$ 89.75
1.34ct Pink Morganite, Round, VS
7.5 mm (calibrated)
$ 85.64
23.41ct Green Cat'S Eye Aquamarine, Oval, Translucent
17.3 x 14.6 mm
$ 396.37
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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 have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?
Overall Rating -> 10
love the site, the experience and the products.
Overall Rating -> 10
The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.
Overall Rating -> 9 
I think therea's no problem
Overall Rating -> 9
Ita's a pretty good and simple way to find gems that youa're looking for amazing selection
Overall Rating -> 10
Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.
