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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

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For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
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Golden Natural Untreated Gemstones
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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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0.43ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.43ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5.3 x 3.3 mm

$ 71.38

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3.11ct Yellow Golden Beryl, Oval, VVS

3.11ct Yellow Golden Beryl, Oval, VVS

11 x 9 mm (calibrated)

$ 74.96

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1.34ct Yellow Beryl, Trillion, VVS

1.34ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 32.03

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1.75ctw Multicolor Andalusite, Oval, VS

1.75ctw Multicolor Andalusite, Oval, VS

6 x 4 mm (calibrated)

$ 93.82

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0.09ctw Black Diamond, Round, Opaque

0.09ctw Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 26.15

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0.16ct Pink Morganite, Round, VS-SI

0.16ct Pink Morganite, Round, VS-SI

4 mm (calibrated)

$ 6.64

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3.87ctw White Topaz, Square, VVS-VS

3.87ctw White Topaz, Square, VVS-VS

4.2 x 4.2 mm

$ 31.16

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0.48ct Yellow Beryl, Pear Shape, VS

0.48ct Yellow Beryl, Pear Shape, VS

6.8 x 4.7 mm

$ 11.47

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1.23ct Purple Spinel, Cushion, VVS-VS

1.23ct Purple Spinel, Cushion, VVS-VS

6.4 x 6 mm

$ 80.86

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22.46ctw Black Spinel, Oval, Opaque

22.46ctw Black Spinel, Oval, Opaque

16 x 12 mm (calibrated)

$ 86.12

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2.81ctw White Topaz, Cushion, VVS-VS

2.81ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 15.40

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0.82ct Yellow Beryl, Trillion, VVS

0.82ct Yellow Beryl, Trillion, VVS

7 x 7 mm (calibrated)

$ 16.33

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0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 23.90

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1.09ct Pink Morganite, Round, VVS-VS

1.09ct Pink Morganite, Round, VVS-VS

7 mm (calibrated)

$ 83.60

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0.36ct Black Diamond, Square, Opaque

0.36ct Black Diamond, Square, Opaque

3.4 x 3.4 mm

$ 179.28

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0.83ct Violet Spinel, Oval, VS

0.83ct Violet Spinel, Oval, VS

7.2 x 5.4 mm

$ 53.39

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1.22ct Purple Sapphire, Cushion, VS
Sapphire Product Video (447791)

1.22ct Purple Sapphire, Cushion, VS

6.7 x 5.3 mm

$ 643.37

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6.08ctw White Topaz, Oval, VVS-VS
Topaz Product Video (462433)

6.08ctw White Topaz, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 33.31

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0.07ctw White Diamond, Round, VVS

0.07ctw White Diamond, Round, VVS

2 mm (calibrated)

$ 159.78

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0.15ct Pink Morganite, Round, VVS-VS

0.15ct Pink Morganite, Round, VVS-VS

3.5 mm (calibrated)

$ 6.23

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1.30ct Purple Spinel, Cushion, VVS-VS

1.30ct Purple Spinel, Cushion, VVS-VS

6.6 x 6.1 mm

$ 129.48

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7.06ctw Black Spinel, Round, Opaque

7.06ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 30.93

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1.16ct Purple Spinel, Cushion, VS

1.16ct Purple Spinel, Cushion, VS

6 x 6 mm (calibrated)

$ 75.79

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6.56ctw Black Spinel, Round, Opaque

6.56ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 25.16

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

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Was a good experience.

Posted By Tim in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic 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 -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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