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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

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For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
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Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
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White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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1.33Ct Medium-Dark Purple Spinel, Cushion, Vvs

1.33Ct Medium-Dark Purple Spinel, Cushion, Vvs

6.3 x 6 mm

$ 126.40

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3.23Ct Clear And Gold-Bronze Rutile Topaz, Pear Shape, Transparent

3.23Ct Clear And Gold-Bronze Rutile Topaz, Pear Shape, Transparent

12.5 x 8.2 mm

$ 80.75

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4.44Ctw White Topaz, Square, Transparent

4.44Ctw White Topaz, Square, Transparent

7 x 7 mm (calibrated)

$ 29.30

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0.09Ct Black Diamond, Round, Opaque

0.09Ct Black Diamond, Round, Opaque

2.7 mm (calibrated)

$ 37.12

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9.00Ctw Black Spinel, Round, Opaque

9.00Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 41.58

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0.53Ctw F Diamond, Heart, Vvs
Diamond Product Video (685656)

0.53Ctw F Diamond, Heart, Vvs

2.9 x 2.6 mm

$ 2,601.61

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0.06Ct E Diamond, Marquise, Vvs

0.06Ct E Diamond, Marquise, Vvs

3.9 x 1.9 mm

$ 251.25

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1.76Ct Salmon Pink Morganite, Oval, Vs

1.76Ct Salmon Pink Morganite, Oval, Vs

9 x 7 mm (calibrated)

$ 162.62

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2.82Ctw Clear White Topaz, Cushion, Vvs-Vs

2.82Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 18.61

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0.93Ct Purple-Pink Spinel, Cushion, Vs

0.93Ct Purple-Pink Spinel, Cushion, Vs

5.4 x 5.2 mm

$ 55.80

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0.09Ctw Black Diamond, Round, Opaque

0.09Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 86.40

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22.02Ctw Black Spinel, Oval, Opaque

22.02Ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 87.20

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1.03Ct Lavender Spinel, Cushion, Vvs-Vs

1.03Ct Lavender Spinel, Cushion, Vvs-Vs

6 x 6 mm (calibrated)

$ 74.78

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0.08Ctw Black Diamond, Round, Opaque

0.08Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 76.80

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2.86Ct Light Gold Golden Beryl, Round, Vvs

2.86Ct Light Gold Golden Beryl, Round, Vvs

10 mm (calibrated)

$ 86.22

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1.63Ct Banana Yellow Beryl, Round, Vvs

1.63Ct Banana Yellow Beryl, Round, Vvs

8 mm (calibrated)

$ 39.12

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25.66Ctw Black Spinel, Baguette, Opaque

25.66Ctw Black Spinel, Baguette, Opaque

20.1 x 9.9 mm

$ 92.38

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1.14Ct Boysenberry Spinel, Pear Shape, Vs

1.14Ct Boysenberry Spinel, Pear Shape, Vs

7.9 x 5.3 mm

$ 146.72

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9.58Ctw Black Spinel, Round, Opaque

9.58Ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 44.26

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1.74Ct Medium Gold Beryl, Oval, Vvs

1.74Ct Medium Gold Beryl, Oval, Vvs

9 x 7 mm (calibrated)

$ 52.20

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3.21Ctw White Topaz, Cushion, Vvs-Vs

3.21Ctw White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 21.19

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0.90Ct Light Pink Morganite, Pear Shape, Vvs-Vs

0.90Ct Light Pink Morganite, Pear Shape, Vvs-Vs

8.1 x 5.3 mm

$ 95.04

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0.08Ctw Black Diamond, Round, Opaque

0.08Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 76.80

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0.55Ct Light Grayish Purple Spinel, Round, Vvs-Vs

0.55Ct Light Grayish Purple Spinel, Round, Vvs-Vs

4.7 mm

$ 34.75

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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

So far, my experience was great...Thanks

Posted By Kaydi in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The stones are very nice.

Posted By Mvk in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very food

Posted By Keeto in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
Source: Bizrate
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