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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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Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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6.96Ctw Black Spinel, Round, Opaque

6.96Ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 27.56

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0.92Ct Pinkish Purple Spinel, Cushion, Vvs-Vs

0.92Ct Pinkish Purple Spinel, Cushion, Vvs-Vs

5.6 x 5.2 mm

$ 77.28

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4.12Ct Very Light Golden-Brown Rutile Topaz, Pear Shape, Transparent

4.12Ct Very Light Golden-Brown Rutile Topaz, Pear Shape, Transparent

15.3 x 7.7 mm

$ 103.00

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1.46Ct Light Golden-Yellow Beryl, Oval, Vvs-Vs

1.46Ct Light Golden-Yellow Beryl, Oval, Vvs-Vs

9.1 x 6.7 mm

$ 35.04

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2.11Ct Yellow Brown Beryl, Oval, Vs

2.11Ct Yellow Brown Beryl, Oval, Vs

10.4 x 8.2 mm

$ 63.30

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2.37Ctw Multicolor Andalusite, Round, Vs-Si

2.37Ctw Multicolor Andalusite, Round, Vs-Si

4 mm (calibrated)

$ 140.78

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1.29Ct Light Pinkish Purple Spinel, Cushion, Vvs

1.29Ct Light Pinkish Purple Spinel, Cushion, Vvs

6.6 x 6.2 mm

$ 108.68

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1.26Ct Lemon Yellow Chrysoberyl, Oval, Vs-Si

1.26Ct Lemon Yellow Chrysoberyl, Oval, Vs-Si

7.1 x 5.6 mm

$ 177.01

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0.60Ct Grayish Violet Spinel, Round, Vvs-Vs

0.60Ct Grayish Violet Spinel, Round, Vvs-Vs

5 mm (calibrated)

$ 36.22

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0.03Ct Black Diamond, Round, Opaque

0.03Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 12.37

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1.42Ct Very Light Pinkish Purple Spinel, Cushion, Vvs

1.42Ct Very Light Pinkish Purple Spinel, Cushion, Vvs

6.9 x 6.1 mm

$ 103.68

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3.53Ct Light Rose Pink Morganite, Marquise, Transparent

3.53Ct Light Rose Pink Morganite, Marquise, Transparent

16.4 x 7 mm

$ 46.60

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1.15Ct Warm Earthy Green Chrysoberyl, Pear Shape, Vvs

1.15Ct Warm Earthy Green Chrysoberyl, Pear Shape, Vvs

7.7 x 6.1 mm

$ 146.80

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0.99Ct Medium Pink Morganite, Pear Shape, Vvs-Vs

0.99Ct Medium Pink Morganite, Pear Shape, Vvs-Vs

8.1 x 5.5 mm

$ 71.88

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2.27Ct Warm Yellow Beryl, Oval, Vs

2.27Ct Warm Yellow Beryl, Oval, Vs

10 x 8 mm (calibrated)

$ 68.10

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3.14Ctw White Topaz, Cushion, Vvs-Vs

3.14Ctw White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 20.72

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5.81Ct Clear White Topaz, Cushion, Vvs-Vs

5.81Ct Clear White Topaz, Cushion, Vvs-Vs

12 x 10 mm (calibrated)

$ 46.48

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2.82Ct Flamingo Pink Morganite, Round, Transparent

2.82Ct Flamingo Pink Morganite, Round, Transparent

9 mm (calibrated)

$ 36.85

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0.58Ct Dark Red Spinel, Cushion, Vvs-Vs

0.58Ct Dark Red Spinel, Cushion, Vvs-Vs

5.5 x 4.7 mm

$ 58.00

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0.27Ctw Black Diamond, Round, Opaque

0.27Ctw Black Diamond, Round, Opaque

3 mm (calibrated)

$ 154.75

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0.97Ct Medium Yellow Beryl, Oval, Vvs-Vs

0.97Ct Medium Yellow Beryl, Oval, Vvs-Vs

8.4 x 6 mm

$ 22.31

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3.74Ct Rose Pink Tone Morganite, Pear Shape, Transparent

3.74Ct Rose Pink Tone Morganite, Pear Shape, Transparent

17.5 x 9.9 mm

$ 51.78

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0.61Ct Medium Green Cat's Eye Alexandrite, Oval, Opaque

0.61Ct Medium Green Cat's Eye Alexandrite, Oval, Opaque

5.8 x 4.2 mm

$ 152.50

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0.92Ct Rapberry Red Spinel, Cushion, Vs

0.92Ct Rapberry Red Spinel, Cushion, Vs

6 x 5.3 mm

$ 65.09

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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

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros 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 -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

Posted By Elansary in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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