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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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0.34ctw Black Diamond, Square, Opaque
Diamond Product Video (678049)

0.34ctw Black Diamond, Square, Opaque

2.7 x 2.5 mm

$ 169.32

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4.78ctw White Topaz, Cushion, VVS-VS

4.78ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 26.19

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1.04ct Purple Spinel, Oval, VS

1.04ct Purple Spinel, Oval, VS

6.5 x 5.5 mm

$ 180.94

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3.37ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (382191)

3.37ctw Multicolor Andalusite, Round, VS

3.5 mm (calibrated)

$ 148.16

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10.63ct Blue Aquamarine, Emerald Cut, VVS
Aquamarine Product Video (467814)

10.63ct Blue Aquamarine, Emerald Cut, VVS

19.6 x 9.6 mm

$ 2,096.32

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1.42ct Yellow Beryl, Oval, VVS

1.42ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 28.29

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2.37ctw Multicolor Andalusite, Round, VS-SI

2.37ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 116.85

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5.66ct Turquoise Aquamarine, Pear Shape, Translucent

5.66ct Turquoise Aquamarine, Pear Shape, Translucent

15.7 x 10.4 mm

$ 117.45

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0.60ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

0.60ct Yellow Chrysoberyl Cat'S Eye, Oval, Translucent

5.1 x 4.4 mm

$ 17.93

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1.56ct Purple Spinel, Cushion, VS

1.56ct Purple Spinel, Cushion, VS

6.9 x 6.4 mm

$ 104.41

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5.01ct Pink Morganite, Round, Translucent

5.01ct Pink Morganite, Round, Translucent

11 mm (calibrated)

$ 57.58

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4.62ct White Topaz, Oval, VVS-VS

4.62ct White Topaz, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 35.42

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6.26ct Turquoise Aquamarine, Cushion, Translucent

6.26ct Turquoise Aquamarine, Cushion, Translucent

11.6 x 11.6 mm

$ 129.90

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2.05ctw Yellow Beryl, Oval, VVS-VS

2.05ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 40.84

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0.92ct Yellow Morganite, Oval, VS

0.92ct Yellow Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 40.32

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5.60ct White Morganite, Oval, VS
Morganite Product Video (714764)

5.60ct White Morganite, Oval, VS

11.2 x 9.4 mm

$ 250.99

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1.64ct Pink Morganite, Oval, VVS-VS

1.64ct Pink Morganite, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 114.34

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2.61ctw White Topaz, Cushion, VVS-VS

2.61ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 14.30

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0.56ct Blue Spinel, Round, VS

0.56ct Blue Spinel, Round, VS

5 mm (calibrated)

$ 41.83

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1.95ct Pink Morganite, Round, VS

1.95ct Pink Morganite, Round, VS

8 mm (calibrated)

$ 106.82

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14.42ctw Black Spinel, Cushion, Opaque

14.42ctw Black Spinel, Cushion, Opaque

12 x 10 mm (calibrated)

$ 78.99

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1.07ct Yellow Morganite, Oval, VVS-VS

1.07ct Yellow Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 64.48

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3.15ct Pink Morganite, Trillion, Transparent

3.15ct Pink Morganite, Trillion, Transparent

10.4 x 9.7 mm

$ 34.51

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6.58ct Yellow Rutile Topaz, Pear Shape, Transparent

6.58ct Yellow Rutile Topaz, Pear Shape, Transparent

13.6 x 11.1 mm

$ 136.54

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

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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