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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
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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1.78Ct Brownish Yellow Beryl, Round, Vvs-Vs

1.78Ct Brownish Yellow Beryl, Round, Vvs-Vs

8 mm (calibrated)

$ 51.26

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0.89Ct Medium-Dark Purple Spinel, Oval, Vvs

0.89Ct Medium-Dark Purple Spinel, Oval, Vvs

5.9 x 5 mm

$ 100.43

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4.51Ctw Clear White Topaz, Cushion, Vvs-Vs

4.51Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.5 mm

$ 23.81

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3.96Ctw Warm White Topaz, Square, Vs

3.96Ctw Warm White Topaz, Square, Vs

4 x 4 mm (calibrated)

$ 36.59

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1.05Ct Dark Red Spinel, Cushion, Vs

1.05Ct Dark Red Spinel, Cushion, Vs

6.1 x 5.6 mm

$ 136.50

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1.14Ct Light Purple Spinel, Cushion, Vs
Spinel Product Video (743182)

1.14Ct Light Purple Spinel, Cushion, Vs

7 x 5 mm (calibrated)

$ 136.80

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0.53Ct Light Grayish Purple Spinel, Round, Vvs-Vs

0.53Ct Light Grayish Purple Spinel, Round, Vvs-Vs

4.8 mm

$ 33.49

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6.19Ct Clear White Topaz, Cushion, Vs

6.19Ct Clear White Topaz, Cushion, Vs

12 x 10 mm (calibrated)

$ 49.52

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0.09Ctw Black Diamond, Round, Opaque

0.09Ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 31.50

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0.90Ct Light Golden-Yellow Beryl, Pear Shape, Vs

0.90Ct Light Golden-Yellow Beryl, Pear Shape, Vs

7.7 x 5.6 mm

$ 21.60

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0.60Ct Medium Green Cat's Eye Alexandrite, Oval, Opaque

0.60Ct Medium Green Cat's Eye Alexandrite, Oval, Opaque

4.9 x 4.6 mm

$ 150.00

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0.18Ct Light Yellow Diamond, Round, Vs
Diamond Product Video (543903)

0.18Ct Light Yellow Diamond, Round, Vs

3.5 mm (calibrated)

$ 355.66

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2.04Ctw Light Yellow Beryl, Oval, Vvs-Vs

2.04Ctw Light Yellow Beryl, Oval, Vvs-Vs

8 x 6 mm (calibrated)

$ 48.96

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11.92Ctw Clear White Topaz, Cushion, Vvs-Vs

11.92Ctw Clear White Topaz, Cushion, Vvs-Vs

12 x 10 mm (calibrated)

$ 95.36

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4.80Ct Flamingo Pink Morganite, Oval, Transparent

4.80Ct Flamingo Pink Morganite, Oval, Transparent

14 x 10 mm (calibrated)

$ 24.00

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1.82Ct Light Pink Morganite, Round, Transparent

1.82Ct Light Pink Morganite, Round, Transparent

8 mm (calibrated)

$ 23.78

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8.28Ctw White Topaz, Square, Vs

8.28Ctw White Topaz, Square, Vs

5 x 5 mm (calibrated)

$ 83.45

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0.47Ct Flamingo Pink Morganite, Pear Shape, Vs

0.47Ct Flamingo Pink Morganite, Pear Shape, Vs

7.2 x 4.2 mm

$ 34.13

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4.36Ctw White Topaz, Square, Vvs-Vs

4.36Ctw White Topaz, Square, Vvs-Vs

4 x 4 mm (calibrated)

$ 40.28

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0.85Ct Light Purple Spinel, Cushion, Vs

0.85Ct Light Purple Spinel, Cushion, Vs

6.4 x 4.9 mm

$ 36.62

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0.18Ctw K Diamond, Round, Vvs-Vs

0.18Ctw K Diamond, Round, Vvs-Vs

2.8 mm (calibrated)

$ 358.20

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0.05Ct Black Diamond, Round, Opaque

0.05Ct Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 20.62

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2.79Ctw Clear White Topaz, Cushion, Vvs-Vs

2.79Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.5 mm

$ 18.42

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19.41Ctw Black Spinel, Oval, Opaque

19.41Ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 89.68

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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 -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

So far, my experience was great...Thanks

Posted By Kaydi in May, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man 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
→ View All GemSelect Reviews on Bizrate
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