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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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1.13ctw Green Peridot, Marquise, VS

1.13ctw Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 10.13

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11.60ct Black Tourmaline, Oval, Opaque

11.60ct Black Tourmaline, Oval, Opaque

16.7 x 12.7 mm

$ 57.77

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33.92ct Blue Aventurine, Fancy, Opaque

33.92ct Blue Aventurine, Fancy, Opaque

36.3 x 10.8 mm

$ 10.14

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1.81ct Orange Hessonite Garnet, Emerald Cut, VS

1.81ct Orange Hessonite Garnet, Emerald Cut, VS

6.6 x 6.6 mm

$ 35.70

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8.26ct Pink Morganite, Pear Shape, Translucent

8.26ct Pink Morganite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 90.49

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11.14ct Brown Tiger'S Eye, Oval, Opaque

11.14ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 11.10

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1.66ct Blue Kyanite, Oval, SI

1.66ct Blue Kyanite, Oval, SI

8 x 6 mm (calibrated)

$ 36.37

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0.15ctw White Diamond, Round, VVS-VS

0.15ctw White Diamond, Round, VVS-VS

2.6 mm (calibrated)

$ 268.16

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2.23ct Yellow Golden Beryl, Round, VVS-VS

2.23ct Yellow Golden Beryl, Round, VVS-VS

9 mm (calibrated)

$ 53.75

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2.30ct Yellow Citrine, Oval, VS

2.30ct Yellow Citrine, Oval, VS

10 x 8 mm (calibrated)

$ 17.52

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46.03ct Multicolor Jasper, Round, Opaque

46.03ct Multicolor Jasper, Round, Opaque

24.6 mm

$ 26.14

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3.57ct Multicolor Labradorite, Pear Shape, Translucent

3.57ct Multicolor Labradorite, Pear Shape, Translucent

13 x 9 mm (calibrated)

$ 7.90

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37.37ctw Multicolor Fossil Coral, Oval, Opaque

37.37ctw Multicolor Fossil Coral, Oval, Opaque

23.7 x 12.8 mm

$ 40.94

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53.10ct Green Malachite, Oval, Opaque

53.10ct Green Malachite, Oval, Opaque

30 x 22 mm (calibrated)

$ 30.27

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2.57ctw Orange Hessonite Garnet, Square, VS

2.57ctw Orange Hessonite Garnet, Square, VS

6 x 6 mm (calibrated)

$ 56.32

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2.17ct Yellow Citrine, Oval, VVS

2.17ct Yellow Citrine, Oval, VVS

13.6 x 7 mm

$ 15.13

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3.06ct Violet Amethyst, Trillion, VS

3.06ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 23.46

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0.70ct Pink Malaya Garnet, Oval, VS

0.70ct Pink Malaya Garnet, Oval, VS

6.2 x 4.3 mm

$ 23.01

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52.00ct Violet Amethyst, Oval, IF
Amethyst Product Video (506058)

52.00ct Violet Amethyst, Oval, IF

24.9 x 21.3 mm

$ 341.83

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7.20ctw Orange Rutile Quartz, Round, Transparent

7.20ctw Orange Rutile Quartz, Round, Transparent

10 mm (calibrated)

$ 21.30

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1.99ct Pink Strawberry Quartz, Round, Translucent

1.99ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 15.26

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11.70ct Black Tourmaline, Cushion, Opaque

11.70ct Black Tourmaline, Cushion, Opaque

14 x 12 mm (calibrated)

$ 34.67

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7.89ctw Violet Amethyst, Oval, Transparent

7.89ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 43.23

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0.20ctw White Diamond, Round, VVS-VS

0.20ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 357.53

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 -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
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Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
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Overall Rating -> 9 star ratings

I've made several purchases over the last 8 years and I've never been less than happy with any of them.

Posted By Jess in July, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate
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