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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
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3.82ctw White Topaz, Square, VS-SI

3.82ctw White Topaz, Square, VS-SI

3.6 x 3.6 mm

$ 29.29

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1.00ct Pink Morganite, Oval, VS

1.00ct Pink Morganite, Oval, VS

7.6 x 6 mm

$ 43.82

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0.90ct Purple Spinel, Cushion, VS

0.90ct Purple Spinel, Cushion, VS

6.3 x 5.7 mm

$ 67.23

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1.36ct Yellow Beryl, Cushion, VVS

1.36ct Yellow Beryl, Cushion, VVS

7 x 7 mm (calibrated)

$ 32.51

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1.45ct Yellow Rutile Topaz, Marquise, Transparent

1.45ct Yellow Rutile Topaz, Marquise, Transparent

12.9 x 4.7 mm

$ 30.09

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0.20ct Black Diamond, Round, Opaque

0.20ct Black Diamond, Round, Opaque

3.5 mm (calibrated)

$ 95.15

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1.54ct Yellow Beryl, Round, VS

1.54ct Yellow Beryl, Round, VS

8 mm (calibrated)

$ 30.68

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1.19ct Yellow Beryl, Oval, VVS-VS

1.19ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 26.08

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0.85ct Orange Morganite, Pear Shape, VS

0.85ct Orange Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 37.25

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0.95ct Yellow Beryl, Oval, VS

0.95ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 18.14

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3.30ctw Multicolor Andalusite, Round, VS

3.30ctw Multicolor Andalusite, Round, VS

3.5 mm (calibrated)

$ 145.08

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 13.57

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0.52ct Black Diamond, Round, Opaque
Diamond Product Video (668695)

0.52ct Black Diamond, Round, Opaque

4.5 mm (calibrated)

$ 414.34

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2.28ct Yellow Rutile Topaz, Pear Shape, Transparent

2.28ct Yellow Rutile Topaz, Pear Shape, Transparent

10 x 7 mm (calibrated)

$ 47.31

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2.23ct Yellow Golden Beryl, Round, VVS-VS

2.23ct Yellow Golden Beryl, Round, VVS-VS

9 mm (calibrated)

$ 53.75

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1.28ct Yellow Beryl, Trillion, VVS-VS

1.28ct Yellow Beryl, Trillion, VVS-VS

8 x 8 mm (calibrated)

$ 30.59

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0.25ct Yellow Diamond, Round, VS-SI
Diamond Product Video (564635)

0.25ct Yellow Diamond, Round, VS-SI

4 mm (calibrated)

$ 380.34

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2.59ct Yellow Golden Beryl, Round, VVS

2.59ct Yellow Golden Beryl, Round, VVS

9 mm (calibrated)

$ 56.76

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1.04ct Purple Spinel, Oval, VVS-VS

1.04ct Purple Spinel, Oval, VVS-VS

6.6 x 5.7 mm

$ 119.64

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5.45ct Orange Imperial Topaz, Cushion, VVS
Imperial Topaz Product Video (346569)

5.45ct Orange Imperial Topaz, Cushion, VVS

13.2 x 8.1 mm

$ 3,039.79

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4.13ct White Topaz, Oval, VVS-VS

4.13ct White Topaz, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 31.67

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0.96ct Yellow Beryl, Trillion, VS

0.96ct Yellow Beryl, Trillion, VS

7 x 7 mm (calibrated)

$ 22.95

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0.11ctw Black Diamond, Round, Opaque

0.11ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 31.96

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18.25ctw Black Spinel, Trillion, Opaque

18.25ctw Black Spinel, Trillion, Opaque

9.8 x 9.6 mm

$ 99.98

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

Was a good experience.

Posted By Tim in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
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
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image