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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
Single
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Lots
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0.47ct Green Chrysoberyl Cat'S Eye, Oval, Translucent

0.47ct Green Chrysoberyl Cat'S Eye, Oval, Translucent

4.4 x 4.4 mm

$ 14.04

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9.17ctw Black Spinel, Round, Opaque

9.17ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 35.17

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1.34ct Pink Morganite, Round, VVS-VS

1.34ct Pink Morganite, Round, VVS-VS

7 mm (calibrated)

$ 102.77

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1.05ct Green Chrysoberyl, Pear Shape, VVS
Chrysoberyl Product Video (366672)

1.05ct Green Chrysoberyl, Pear Shape, VVS

7.7 x 5.9 mm

$ 101.97

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3.62ct White Topaz, Round, VVS-VS
Topaz Product Video (557820)

3.62ct White Topaz, Round, VVS-VS

9 mm (calibrated)

$ 31.86

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1.02ct Yellow Beryl, Oval, VVS-VS

1.02ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 20.32

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4.50ct Pink Morganite, Oval, Transparent

4.50ct Pink Morganite, Oval, Transparent

13 x 9 mm (calibrated)

$ 49.30

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0.70ct Purple Spinel, Cushion, VVS-VS

0.70ct Purple Spinel, Cushion, VVS-VS

6 x 5.2 mm

$ 58.10

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0.63ct Violet Spinel, Round, VS

0.63ct Violet Spinel, Round, VS

5 mm (calibrated)

$ 33.05

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0.76ct Yellow Beryl, Oval, VS

0.76ct Yellow Beryl, Oval, VS

7.5 x 5.6 mm

$ 15.14

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4.41ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (381950)

4.41ctw Multicolor Andalusite, Round, VS

4 mm (calibrated)

$ 193.71

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3.12ct Pink Morganite, Round, Transparent

3.12ct Pink Morganite, Round, Transparent

10 mm (calibrated)

$ 34.18

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1.00ct Purple Spinel, Pear Shape, VS

1.00ct Purple Spinel, Pear Shape, VS

7.3 x 5.4 mm

$ 98.60

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3.67ct White Topaz, Oval, VVS-VS

3.67ct White Topaz, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 20.11

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6.94ctw Black Spinel, Round, Opaque

6.94ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 22.81

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1.32ct Yellow Beryl, Oval, VS

1.32ct Yellow Beryl, Oval, VS

8.9 x 6.7 mm

$ 26.29

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1.54ct Pink Morganite, Round, VVS-VS

1.54ct Pink Morganite, Round, VVS-VS

7.5 mm (calibrated)

$ 118.11

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1.55ct Purple Spinel, Oval, VS

1.55ct Purple Spinel, Oval, VS

7.5 x 5.8 mm

$ 85.76

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0.02ct Black Diamond, Round, Opaque

0.02ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 13.28

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1.33ct Yellow Beryl, Oval, VVS

1.33ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 26.49

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3.68ct Pink Morganite, Trillion, Translucent

3.68ct Pink Morganite, Trillion, Translucent

11 x 11 mm (calibrated)

$ 40.32

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3.15ct White Topaz, Round, VS

3.15ct White Topaz, Round, VS

8.5 mm (calibrated)

$ 20.71

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0.67ct Purple Spinel, Round, VVS-VS

0.67ct Purple Spinel, Round, VVS-VS

5 mm (calibrated)

$ 35.14

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0.25ct Brown Diamond, Round, VVS-VS
Diamond Product Video (564613)

0.25ct Brown Diamond, Round, VVS-VS

4 mm (calibrated)

$ 380.34

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 -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image