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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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3.65ct Blue Aquamarine, Emerald Cut, VVS

3.65ct Blue Aquamarine, Emerald Cut, VVS

11 x 9 mm (calibrated)

$ 438.00

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3.08ct Yellow Citrine, Oval, VVS

3.08ct Yellow Citrine, Oval, VVS

12.3 x 9.2 mm

$ 18.66

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13.82ct Green Malachite, Baguette, Opaque

13.82ct Green Malachite, Baguette, Opaque

13.3 x 10.1 mm

$ 16.05

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6.15ct Brown Tiger'S Eye, Baguette, Opaque

6.15ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 6.13

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4.17ctw White Topaz, Square, VVS-VS

4.17ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 33.58

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7.84ctw Violet Amethyst, Oval, Transparent

7.84ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 42.94

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1.58ct Orange Hessonite Garnet, Oval, VS-SI

1.58ct Orange Hessonite Garnet, Oval, VS-SI

7.8 x 6.4 mm

$ 27.89

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13.51ct Black Tourmaline, Oval, Opaque

13.51ct Black Tourmaline, Oval, Opaque

16.7 x 13.7 mm

$ 67.28

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0.96ct Pink Morganite, Pear Shape, VVS-VS

0.96ct Pink Morganite, Pear Shape, VVS-VS

9.2 x 5.2 mm

$ 84.15

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48.23ctw Multicolor Agate Geode, Fancy, Opaque

48.23ctw Multicolor Agate Geode, Fancy, Opaque

30.8 x 20 mm

$ 51.03

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2.06ctw Gray Sillimanite Cat'S Eye, Oval, Transparent

2.06ctw Gray Sillimanite Cat'S Eye, Oval, Transparent

6.8 x 4.8 mm

$ 6.49

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3.59ct Multicolor Labradorite, Round, Translucent

3.59ct Multicolor Labradorite, Round, Translucent

9 mm (calibrated)

$ 4.29

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2.04ct Brown Cat'S Eye Scapolite, Oval, Translucent

2.04ct Brown Cat'S Eye Scapolite, Oval, Translucent

7.8 x 6.6 mm

$ 11.17

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7.89ct Multicolor Rainbow Pyrite, Fancy, Opaque

7.89ct Multicolor Rainbow Pyrite, Fancy, Opaque

19.6 x 12.6 mm

$ 23.57

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11.12ct Multicolor Agate, Oval, Opaque

11.12ct Multicolor Agate, Oval, Opaque

14.8 x 13 mm

$ 11.07

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5.02ctw Red Pyrope Garnet, Pear Shape, VVS-VS

5.02ctw Red Pyrope Garnet, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 38.50

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1.91ct Green Tourmaline, Emerald Cut, VVS-VS

1.91ct Green Tourmaline, Emerald Cut, VVS-VS

15.1 x 3.9 mm

$ 51.05

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47.54ct Green Uvarovite Garnet Drusy, Fancy, Opaque

47.54ct Green Uvarovite Garnet Drusy, Fancy, Opaque

36.3 x 27.8 mm

$ 71.02

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0.68ct Pink Tourmaline, Round, Transparent

0.68ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 27.09

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15.55ct Multicolor Ruby-Zoisite, Baguette, Opaque

15.55ct Multicolor Ruby-Zoisite, Baguette, Opaque

13.2 x 9.9 mm

$ 34.07

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1.51ct Violet Spinel, Cushion, VS

1.51ct Violet Spinel, Cushion, VS

6.7 x 6.4 mm

$ 125.79

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8.18ct Green Malachite, Baguette, Opaque

8.18ct Green Malachite, Baguette, Opaque

11 x 9 mm (calibrated)

$ 8.88

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1.24ct Pink Tourmaline, Oval, Transparent

1.24ct Pink Tourmaline, Oval, Transparent

6.5 x 5.5 mm

$ 21.26

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5.79ct Pink Strawberry Quartz, Oval, Translucent

5.79ct Pink Strawberry Quartz, Oval, Translucent

14 x 10 mm (calibrated)

$ 34.90

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

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Maneuvering through the website was easy and enjoyable. I have ordered from GemSelect before and that experience was also pleasant.

Posted By Willow in August, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate
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