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Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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0.87ct Yellow Beryl, Trillion, VVS

0.87ct Yellow Beryl, Trillion, VVS

7 x 7 mm (calibrated)

$ 17.33

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0.82ct Yellow Morganite, Cushion, VS

0.82ct Yellow Morganite, Cushion, VS

6 x 6 mm (calibrated)

$ 49.41

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1.35ct Pink Morganite, Round, VVS

1.35ct Pink Morganite, Round, VVS

7 mm (calibrated)

$ 53.13

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0.25ct Brown Diamond, Round, VS
Diamond Product Video (564617)

0.25ct Brown Diamond, Round, VS

4 mm (calibrated)

$ 456.41

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6.70ct Pink Morganite, Oval, Transparent

6.70ct Pink Morganite, Oval, Transparent

15.8 x 10.1 mm

$ 66.73

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4.64ct Pink Morganite, Round, Transparent

4.64ct Pink Morganite, Round, Transparent

11 mm (calibrated)

$ 50.33

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1.21ct Yellow Beryl, Trillion, VVS

1.21ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 24.10

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0.73ct Gray Spinel, Cushion, VVS-VS

0.73ct Gray Spinel, Cushion, VVS-VS

5.8 x 5 mm

$ 60.59

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5.50ct White Topaz, Oval, VVS-VS
Topaz Product Video (751900)

5.50ct White Topaz, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 36.52

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 31.87

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8.86ctw Black Spinel, Round, Opaque

8.86ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 33.97

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1.42ct Purple Sapphire, Cushion, VS
Sapphire Product Video (447717)

1.42ct Purple Sapphire, Cushion, VS

6.9 x 5.5 mm

$ 748.84

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0.85ct Yellow Beryl, Oval, VS

0.85ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 16.23

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0.88ct Purple Spinel, Cushion, VS

0.88ct Purple Spinel, Cushion, VS

6 x 5 mm

$ 31.47

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0.09ct Pink Spinel, Round, VS-SI

0.09ct Pink Spinel, Round, VS-SI

2.7 mm (calibrated)

$ 8.57

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0.03ct White Diamond, Round, VVS

0.03ct White Diamond, Round, VVS

2 mm (calibrated)

$ 68.48

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2.62ct Pink Morganite, Pear Shape, Translucent

2.62ct Pink Morganite, Pear Shape, Translucent

13.1 x 9.9 mm

$ 25.09

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0.71ct Purple Spinel, Oval, VS

0.71ct Purple Spinel, Oval, VS

6.5 x 4.9 mm

$ 58.93

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7.45ctw White Topaz, Square, VVS-VS

7.45ctw White Topaz, Square, VVS-VS

5 x 5 mm (calibrated)

$ 59.59

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1.55ct Purple Spinel, Cushion, VVS-VS

1.55ct Purple Spinel, Cushion, VVS-VS

6.7 x 6.4 mm

$ 122.27

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0.52ct Yellow Beryl, Oval, VVS-VS

0.52ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 12.95

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1.10ct Purple Spinel, Cushion, VS

1.10ct Purple Spinel, Cushion, VS

6.2 x 5.5 mm

$ 131.47

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0.88ct Pink Morganite, Pear Shape, VS

0.88ct Pink Morganite, Pear Shape, VS

9.2 x 5.2 mm

$ 53.03

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3.07ctw White Topaz, Cushion, VVS-VS

3.07ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 16.82

View Gem
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Why Buy Natural Untreated Gemstones from GemSelect?

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.

Natural Untreated Gemstones for Jewelry and Collecting

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 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The site provided lots of detail, factual data, and good photos. I also like the availability of searching by price range as well as by the type of stone.

Posted By SLIntuitive Donna in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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