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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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2.22ctw Yellow Golden Beryl, Oval, VS

2.22ctw Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 60.81

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14.77ctw Black Spinel, Round, Opaque

14.77ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 45.97

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0.54ct Pink Spinel, Cushion, VVS

0.54ct Pink Spinel, Cushion, VVS

5.2 x 4.3 mm

$ 37.65

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3.69ct White Topaz, Heart, VVS-VS

3.69ct White Topaz, Heart, VVS-VS

10 x 10 mm (calibrated)

$ 30.63

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1.03ct Purple Spinel, Cushion, VVS-VS

1.03ct Purple Spinel, Cushion, VVS-VS

6.4 x 5.9 mm

$ 153.88

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1.01ct Yellow Beryl, Oval, VS

1.01ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 20.12

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1.14ct Purple Spinel, Cushion, VS
Spinel Product Video (743182)

1.14ct Purple Spinel, Cushion, VS

7 x 5 mm (calibrated)

$ 113.54

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2.08ct Yellow Golden Beryl, Oval, VVS-VS

2.08ct Yellow Golden Beryl, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 56.97

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0.53ct Pink Morganite, Pear Shape, VVS

0.53ct Pink Morganite, Pear Shape, VVS

8.2 x 4.3 mm

$ 31.94

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2.25ct Yellow Beryl, Oval, VS

2.25ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 56.03

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0.66ct Yellow Beryl, Oval, VVS-VS

0.66ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 16.43

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1.09ct Yellow Beryl, Round, VVS-VS

1.09ct Yellow Beryl, Round, VVS-VS

7 mm (calibrated)

$ 23.89

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0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 10.27

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0.24ct Pink Spinel, Baguette, VS-SI

0.24ct Pink Spinel, Baguette, VS-SI

4.3 x 2.8 mm

$ 19.92

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25.41ctw Black Spinel, Baguette, Opaque

25.41ctw Black Spinel, Baguette, Opaque

20 x 10.1 mm

$ 75.93

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1.02ct Pink Morganite, Pear Shape, VVS-VS

1.02ct Pink Morganite, Pear Shape, VVS-VS

11.2 x 4.7 mm

$ 111.75

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1.74ct Yellow Beryl, Oval, VVS

1.74ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 34.66

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1.58ct Purple Spinel, Cushion, VVS-VS

1.58ct Purple Spinel, Cushion, VVS-VS

6.9 x 6.5 mm

$ 262.28

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1.36ct Purple Spinel, Cushion, VS

1.36ct Purple Spinel, Cushion, VS

6.9 x 6 mm

$ 162.55

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2.95ctw White Topaz, Cushion, VVS-VS

2.95ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 16.17

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8.21ctw White Topaz, Heart, VVS-VS

8.21ctw White Topaz, Heart, VVS-VS

10 x 10 mm (calibrated)

$ 68.14

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0.18ct Black Diamond, Square, Opaque

0.18ct Black Diamond, Square, Opaque

2.9 x 2.7 mm

$ 89.64

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0.14ctw White Diamond, Marquise, VVS
Diamond Product Video (740695)

0.14ctw White Diamond, Marquise, VVS

4.2 x 2.1 mm

$ 486.59

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0.07ct Black Diamond, Round, Opaque

0.07ct Black Diamond, Round, Opaque

2.5 mm (calibrated)

$ 33.87

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

It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 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

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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