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Home › Gemstones › Natural Untreated Gemstones

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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1.22ct Yellow Beryl, Oval, VVS-VS

1.22ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 26.73

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20.83ct Yellow Aventurine, Fancy, Opaque

20.83ct Yellow Aventurine, Fancy, Opaque

34.1 x 8.9 mm

$ 6.23

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3.90ct Green Fluorite, Oval, Transparent

3.90ct Green Fluorite, Oval, Transparent

9.2 x 7.9 mm

$ 16.04

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0.63ct Purple Spinel, Cushion, VS

0.63ct Purple Spinel, Cushion, VS

4.8 x 4.5 mm

$ 43.92

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6.06ct Turquoise Hemimorphite Druzy, Fancy, Opaque

6.06ct Turquoise Hemimorphite Druzy, Fancy, Opaque

16.6 x 8.9 mm

$ 99.59

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1.56ct Black Star Diopside, Oval, Opaque

1.56ct Black Star Diopside, Oval, Opaque

8 x 6 mm (calibrated)

$ 7.77

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7.29ct Multicolor Labradorite, Pear Shape, Translucent

7.29ct Multicolor Labradorite, Pear Shape, Translucent

14 x 10 mm (calibrated)

$ 16.12

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43.57ct Multicolor Jasper, Oval, Opaque

43.57ct Multicolor Jasper, Oval, Opaque

32.5 x 24.6 mm

$ 47.74

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1.61ct Pink Morganite, Round, VS

1.61ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 123.47

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2.92ct Yellow Citrine, Baguette, VVS-VS

2.92ct Yellow Citrine, Baguette, VVS-VS

12.1 x 6.2 mm

$ 22.39

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20.87ct Multicolor Jasper, Pear Shape, Opaque

20.87ct Multicolor Jasper, Pear Shape, Opaque

28.5 x 20.2 mm

$ 17.25

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4.16ctw Violet Amethyst, Oval, VVS-VS

4.16ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 22.79

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35.50ct Multicolor Jasper, Fancy, Opaque

35.50ct Multicolor Jasper, Fancy, Opaque

34 x 19.6 mm

$ 22.17

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0.80ct Green Chrome Diopside, Marquise, VS

0.80ct Green Chrome Diopside, Marquise, VS

9.8 x 4.6 mm

$ 19.92

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7.71ct Brown Tiger'S Eye Matrix, Sphere / Ball, Opaque
Tiger's Eye Matrix Product Video (526455)

7.71ct Brown Tiger'S Eye Matrix, Sphere / Ball, Opaque

10 mm (calibrated)

$ 7.74

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1.10ct Yellow Citrine, Round, VVS

1.10ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 7.30

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1.46ct Yellow Beryl, Trillion, VS

1.46ct Yellow Beryl, Trillion, VS

8 x 8 mm (calibrated)

$ 34.90

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7.86ctw Violet Amethyst, Oval, Transparent

7.86ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 31.08

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1.05ct Green Tourmaline, Emerald Cut, VS

1.05ct Green Tourmaline, Emerald Cut, VS

11.2 x 3.6 mm

$ 22.06

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1.04ct Green Sphene, Oval, Transparent

1.04ct Green Sphene, Oval, Transparent

6.6 x 5.5 mm

$ 5.18

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1.56ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.56ct Orange Hessonite Garnet, Emerald Cut, VS-SI

6 x 6 mm (calibrated)

$ 30.77

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0.63ct Orange Sphalerite, Oval, SI

0.63ct Orange Sphalerite, Oval, SI

5.5 x 4.5 mm

$ 31.37

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8.42ct Gray Jadeite, Oval, Opaque

8.42ct Gray Jadeite, Oval, Opaque

16.7 x 12.1 mm

$ 25.16

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1.00ct Blue Kyanite, Oval, VS-SI

1.00ct Blue Kyanite, Oval, VS-SI

7 x 5 mm (calibrated)

$ 20.82

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

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

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 -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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