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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
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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14.84Ctw Black Spinel, Round, Opaque

14.84Ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 58.76

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2.24Ct Medium Yellow Beryl, Oval, Vs

2.24Ct Medium Yellow Beryl, Oval, Vs

10 x 8 mm (calibrated)

$ 64.51

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1.14Ct Very Light Pinkish Purple Spinel, Cushion, Vs

1.14Ct Very Light Pinkish Purple Spinel, Cushion, Vs

6 x 5.3 mm

$ 97.81

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0.40Ct Very Light Pink Morganite, Round, Vs-Si

0.40Ct Very Light Pink Morganite, Round, Vs-Si

5 mm (calibrated)

$ 20.00

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1.56Ct Grey Purple Spinel, Cushion, Vvs-Vs

1.56Ct Grey Purple Spinel, Cushion, Vvs-Vs

6.5 x 6.2 mm

$ 133.85

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5.06Ctw Clear White Topaz, Square, Vs

5.06Ctw Clear White Topaz, Square, Vs

4.2 x 4.1 mm

$ 46.75

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1.10Ct Deep Pinkish Purple Sapphire, Cushion, Vs
Sapphire Product Video (447843)

1.10Ct Deep Pinkish Purple Sapphire, Cushion, Vs

7.3 x 5.1 mm

$ 698.90

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0.56Ct Light Purplish Blue Spinel, Round, Vs

0.56Ct Light Purplish Blue Spinel, Round, Vs

5 mm (calibrated)

$ 50.40

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0.02Ct Black Diamond, Round, Opaque

0.02Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 19.20

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24.82Ctw Black Spinel, Baguette, Opaque

24.82Ctw Black Spinel, Baguette, Opaque

17.6 x 8.2 mm

$ 236.54

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17.07Ctw Black Spinel, Heart, Opaque

17.07Ctw Black Spinel, Heart, Opaque

13 x 13 mm (calibrated)

$ 61.45

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1.12Ct Light Golden Morganite, Oval, Vs

1.12Ct Light Golden Morganite, Oval, Vs

8 x 6 mm (calibrated)

$ 48.28

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0.23Ct Light Blue-Green Aquamarine, Round, Vs

0.23Ct Light Blue-Green Aquamarine, Round, Vs

4 mm (calibrated)

$ 38.64

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1.10Ct Rapberry Red Purple Spinel, Cushion, Vs

1.10Ct Rapberry Red Purple Spinel, Cushion, Vs

6.1 x 5.7 mm

$ 222.00

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1.31Ct Pinkish Purple Sapphire, Cushion, Vs
Sapphire Product Video (447725)

1.31Ct Pinkish Purple Sapphire, Cushion, Vs

7.9 x 5.4 mm

$ 832.34

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1.75Ct Deep Mauve Tone Spinel, Cushion, Vs
Spinel Product Video (743189)

1.75Ct Deep Mauve Tone Spinel, Cushion, Vs

6.8 x 6.3 mm

$ 210.00

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1.04Ct Champagne Diamond, Fancy, Si
Diamond Product Video (382118)

1.04Ct Champagne Diamond, Fancy, Si

6.4 x 5.1 mm

$ 2,660.63

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2.97Ctw Clear White Topaz, Cushion, Vvs-Vs

2.97Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 19.61

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5.44Ct Blush Pink Morganite, Pear Shape, Translucent

5.44Ct Blush Pink Morganite, Pear Shape, Translucent

14 x 10 mm (calibrated)

$ 27.20

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0.86Ct Salmon Pink Morganite, Pear Shape, Vvs

0.86Ct Salmon Pink Morganite, Pear Shape, Vvs

8.9 x 5.2 mm

$ 90.82

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22.49Ctw Black Spinel, Oval, Opaque

22.49Ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 89.06

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0.68Ct Medium Purple Spinel, Cushion, Vvs-Vs

0.68Ct Medium Purple Spinel, Cushion, Vvs-Vs

5 x 5 mm (calibrated)

$ 57.12

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1.10Ct Flamingo Pink Morganite, Pear Shape, Vvs-Vs

1.10Ct Flamingo Pink Morganite, Pear Shape, Vvs-Vs

9.6 x 5.2 mm

$ 101.64

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0.29Ctw Black Diamond, Square, Opaque

0.29Ctw Black Diamond, Square, Opaque

2.5 x 2.4 mm

$ 174.00

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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

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use

Posted By DrD in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
Source: Bizrate
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