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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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1.42ct Purple Spinel, Cushion, VS

1.42ct Purple Spinel, Cushion, VS

6.7 x 6 mm

$ 91.93

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0.07ct Black Diamond, Square, Opaque

0.07ct Black Diamond, Square, Opaque

2 x 1.9 mm

$ 34.86

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0.98ct Yellow Beryl, Oval, VVS-VS

0.98ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 24.40

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0.97ct Purple Spinel, Cushion, VVS-VS

0.97ct Purple Spinel, Cushion, VVS-VS

5.8 x 5.8 mm

$ 67.63

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1.54ct Yellow Beryl, Oval, VVS-VS

1.54ct Yellow Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 30.68

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0.11ctw Black Diamond, Square, Opaque

0.11ctw Black Diamond, Square, Opaque

2 x 2 mm (calibrated)

$ 54.78

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4.18ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (382239)

4.18ctw Multicolor Andalusite, Round, VS

3.5 mm (calibrated)

$ 183.77

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0.99ct Yellow Beryl, Oval, VVS-VS

0.99ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 19.72

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14.85ctw Black Spinel, Round, Opaque

14.85ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 48.81

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20.90ctw Black Spinel, Oval, Opaque

20.90ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 68.69

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1.39ct Purple Spinel, Cushion, VS

1.39ct Purple Spinel, Cushion, VS

6.8 x 6.4 mm

$ 95.03

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1.43ct Pink Morganite, Round, VS-SI

1.43ct Pink Morganite, Round, VS-SI

7.5 mm (calibrated)

$ 109.67

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4.13ct Yellow Rutile Topaz, Oval, Transparent

4.13ct Yellow Rutile Topaz, Oval, Transparent

12 x 10 mm (calibrated)

$ 85.70

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1.45ct Yellow Beryl, Round, VVS

1.45ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 28.88

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4.15ct Pink Morganite, Pear Shape, Transparent

4.15ct Pink Morganite, Pear Shape, Transparent

11.7 x 8.9 mm

$ 17.22

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3.14ct Yellow Beryl, Oval, VVS

3.14ct Yellow Beryl, Oval, VVS

11 x 9 mm (calibrated)

$ 78.19

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1.08ct Pink Morganite, Oval, VVS-VS

1.08ct Pink Morganite, Oval, VVS-VS

7.8 x 5.7 mm

$ 59.16

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1.25ct Yellow Beryl, Trillion, VVS-VS

1.25ct Yellow Beryl, Trillion, VVS-VS

8 x 8 mm (calibrated)

$ 29.88

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5.25ct White Topaz, Cushion, VS

5.25ct White Topaz, Cushion, VS

12 x 10 mm (calibrated)

$ 34.86

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1.45ct Pink Morganite, Round, VS
Morganite Product Video (587287)

1.45ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 111.20

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0.06ct Black Diamond, Round, Opaque

0.06ct Black Diamond, Round, Opaque

2.3 mm (calibrated)

$ 19.54

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0.45ct Pink Morganite, Round, VS

0.45ct Pink Morganite, Round, VS

5.3 mm

$ 18.68

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1.50ctw Yellow Beryl, Oval, VS

1.50ctw Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 29.88

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0.61ct Yellow Beryl, Oval, VS

0.61ct Yellow Beryl, Oval, VS

7 x 5 mm (calibrated)

$ 11.64

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 -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate

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

Very pleasant

Posted By Varun in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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