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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
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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
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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1.18ct Yellow Chrysoberyl, Pear Shape, VVS-VS
Chrysoberyl Product Video (366665)

1.18ct Yellow Chrysoberyl, Pear Shape, VVS-VS

7.4 x 5.5 mm

$ 114.60

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 31.87

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6.96ct Pink Morganite, Round, Translucent

6.96ct Pink Morganite, Round, Translucent

12 mm (calibrated)

$ 76.25

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0.40ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.40ct Green Cat'S Eye Alexandrite, Oval, Opaque

5 x 3.7 mm

$ 83.00

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2.09ct Yellow Beryl, Oval, VVS

2.09ct Yellow Beryl, Oval, VVS

10 x 8 mm (calibrated)

$ 41.63

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25.90ctw Black Spinel, Baguette, Opaque
Spinel Product Video (372541)

25.90ctw Black Spinel, Baguette, Opaque

17.6 x 8.2 mm

$ 203.74

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3.06ctw White Topaz, Cushion, VVS-VS

3.06ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 16.77

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0.09ct Black Diamond, Round, Opaque

0.09ct Black Diamond, Round, Opaque

2.7 mm (calibrated)

$ 30.81

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3.86ctw Multicolor Andalusite, Round, VS

3.86ctw Multicolor Andalusite, Round, VS

3.7 mm

$ 169.55

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2.19ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (224356)

2.19ctw Multicolor Andalusite, Round, VS

4 mm (calibrated)

$ 107.97

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0.85ct Pink Morganite, Pear Shape, VVS-VS

0.85ct Pink Morganite, Pear Shape, VVS-VS

11.6 x 4.4 mm

$ 51.23

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7.05ctw Pink Morganite, Round, Translucent

7.05ctw Pink Morganite, Round, Translucent

10 mm (calibrated)

$ 77.24

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0.65ct Pink Spinel, Cushion, VVS-VS

0.65ct Pink Spinel, Cushion, VVS-VS

5.3 x 4.6 mm

$ 45.32

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1.16ct Yellow Beryl, Round, VS

1.16ct Yellow Beryl, Round, VS

7 mm (calibrated)

$ 25.41

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4.86ct Pink Morganite, Pear Shape, Transparent

4.86ct Pink Morganite, Pear Shape, Transparent

14 x 10 mm (calibrated)

$ 20.17

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 17.11

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13.21ctw Black Spinel, Round, Opaque

13.21ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 41.10

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 14.53

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 13.70

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1.89ct Yellow Beryl, Round, VVS-VS

1.89ct Yellow Beryl, Round, VVS-VS

8 mm (calibrated)

$ 41.42

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1.06ct Yellow Beryl, Oval, VS

1.06ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 26.39

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0.80ct Gray Spinel, Heart, VVS

0.80ct Gray Spinel, Heart, VVS

6.3 x 5.7 mm

$ 96.00

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5.97ct White Topaz, Cushion, VS
Topaz Product Video (752110)

5.97ct White Topaz, Cushion, VS

12 x 10 mm (calibrated)

$ 39.64

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1.31ct Purple Spinel, Cushion, VS

1.31ct Purple Spinel, Cushion, VS

6.5 x 5.4 mm

$ 156.57

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

Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!

Posted By Matthew K. in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

overall great

Posted By SR in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate
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