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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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2.45ctw Yellow Beryl, Oval, VVS-VS

2.45ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 61.01

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4.34ct Pink Morganite, Oval, Transparent

4.34ct Pink Morganite, Oval, Transparent

12 x 10 mm (calibrated)

$ 47.55

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0.17ctw White Diamond, Round, VVS-VS
Diamond Product Video (567410)

0.17ctw White Diamond, Round, VVS-VS

2.8 mm (calibrated)

$ 276.28

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0.98ct Purple Spinel, Cushion, VS

0.98ct Purple Spinel, Cushion, VS

5.5 x 4.9 mm

$ 35.04

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0.67ct Pink Morganite, Pear Shape, VVS-VS

0.67ct Pink Morganite, Pear Shape, VVS-VS

8.5 x 5 mm

$ 40.38

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0.06ct White Diamond, Marquise, VVS
Diamond Product Video (740685)

0.06ct White Diamond, Marquise, VVS

4 x 2.1 mm

$ 208.54

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0.75ct Purple Spinel, Cushion, VVS

0.75ct Purple Spinel, Cushion, VVS

5.6 x 4.5 mm

$ 26.83

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1.10ct Yellow Beryl, Oval, VVS-VS

1.10ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 27.39

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3.26ctw Yellow Golden Beryl, Oval, VS

3.26ctw Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 78.58

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0.77ct Pink Morganite, Pear Shape, VVS-VS

0.77ct Pink Morganite, Pear Shape, VVS-VS

8.5 x 5 mm

$ 46.41

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4.03ct Blue Aquamarine, Oval, Translucent

4.03ct Blue Aquamarine, Oval, Translucent

12.8 x 9.6 mm

$ 83.62

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1.04ct Pink Morganite, Pear Shape, VVS
Morganite Product Video (478215)

1.04ct Pink Morganite, Pear Shape, VVS

11 x 5.2 mm

$ 103.58

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2.66ct Pink Morganite, Oval, VVS-VS

2.66ct Pink Morganite, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 132.47

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1.74ct Yellow Beryl, Oval, VVS-VS

1.74ct Yellow Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 34.66

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0.08ctw Black Diamond, Round, Opaque

0.08ctw Black Diamond, Round, Opaque

2 mm (calibrated)

$ 19.37

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1.19ct Purple Spinel, Cushion, VS

1.19ct Purple Spinel, Cushion, VS

6.3 x 5.5 mm

$ 130.38

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1.16ct Purple Spinel, Oval, VS

1.16ct Purple Spinel, Oval, VS

7.2 x 5.7 mm

$ 130.38

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1.00ct Violet Spinel, Oval, VS

1.00ct Violet Spinel, Oval, VS

6.6 x 5.6 mm

$ 102.65

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2.38ctw Multicolor Andalusite, Round, VS-SI

2.38ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 117.34

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3.79ctw White Topaz, Square, VS-SI

3.79ctw White Topaz, Square, VS-SI

3.5 x 3.5 mm

$ 29.07

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0.69ct Purple Spinel, Cushion, VVS

0.69ct Purple Spinel, Cushion, VVS

5.2 x 4.9 mm

$ 34.36

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1.04ct Purple Spinel, Cushion, VS

1.04ct Purple Spinel, Cushion, VS

6 x 5 mm

$ 103.58

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0.80ct Pink Morganite, Cushion, VVS-VS

0.80ct Pink Morganite, Cushion, VVS-VS

8 x 4.8 mm

$ 48.21

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1.18ct Purple Spinel, Cushion, VS

1.18ct Purple Spinel, Cushion, VS

6.4 x 5.5 mm

$ 117.53

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

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I've been looking for.

Posted By Tree Dog in April, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones in July, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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