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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

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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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19.89ct Multicolor Tiger'S Eye Matrix, Baguette, Opaque

19.89ct Multicolor Tiger'S Eye Matrix, Baguette, Opaque

25.6 x 12.7 mm

$ 8.91

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2.26ctw Multicolor Andalusite, Round, VS-SI

2.26ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 111.42

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1.36ct White Rainbow Moonstone, Oval, Transparent

1.36ct White Rainbow Moonstone, Oval, Transparent

9 x 7 mm (calibrated)

$ 43.34

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15.39ct Pink Coral, Fancy, Opaque
Coral Product Video (344911)

15.39ct Pink Coral, Fancy, Opaque

24.8 x 19.5 mm

$ 236.06

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0.99ct Green Tourmaline, Baguette, VVS

0.99ct Green Tourmaline, Baguette, VVS

8.3 x 3.7 mm

$ 34.51

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1.82ct Brown Diamond, Pear Shape, SI
Diamond Product Video (382117)

1.82ct Brown Diamond, Pear Shape, SI

8.4 x 6.1 mm

$ 4,251.02

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1.33ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.33ct Orange Hessonite Garnet, Emerald Cut, VS-SI

6.3 x 6.3 mm

$ 24.77

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0.58ct Green Tourmaline, Oval, VS

0.58ct Green Tourmaline, Oval, VS

6.2 x 4.9 mm

$ 28.88

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1.05ct Yellow Citrine, Round, VVS-VS

1.05ct Yellow Citrine, Round, VVS-VS

7 mm (calibrated)

$ 8.37

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0.07ctw Black Diamond, Round, Opaque

0.07ctw Black Diamond, Round, Opaque

2 mm (calibrated)

$ 55.78

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7.31ctw Violet Amethyst, Oval, Transparent

7.31ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 40.05

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1.99ct Orange Hessonite Garnet, Oval, VS

1.99ct Orange Hessonite Garnet, Oval, VS

8.1 x 6.7 mm

$ 34.73

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0.86ct Green Tourmaline, Emerald Cut, VS

0.86ct Green Tourmaline, Emerald Cut, VS

8.4 x 3.9 mm

$ 42.83

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1.00ct Yellow Citrine, Square, VVS-VS

1.00ct Yellow Citrine, Square, VVS-VS

6 x 6 mm (calibrated)

$ 6.97

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7.28ct Multicolor Coral, Oval, Translucent

7.28ct Multicolor Coral, Oval, Translucent

15.1 x 12.3 mm

$ 22.74

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0.94ctw White Rainbow Moonstone, Oval, Transparent

0.94ctw White Rainbow Moonstone, Oval, Transparent

6 x 4 mm (calibrated)

$ 29.96

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1.96ctw Yellow Citrine, Marquise, VS

1.96ctw Yellow Citrine, Marquise, VS

9 x 4.9 mm

$ 10.74

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9.98ct Pink Strawberry Quartz, Oval, Translucent

9.98ct Pink Strawberry Quartz, Oval, Translucent

15.4 x 12.7 mm

$ 76.54

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2.91ctw Orange Hessonite Garnet, Emerald Cut, VS

2.91ctw Orange Hessonite Garnet, Emerald Cut, VS

6 x 6 mm (calibrated)

$ 57.39

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2.62ctw Pink Strawberry Quartz, Round, Translucent

2.62ctw Pink Strawberry Quartz, Round, Translucent

7 mm (calibrated)

$ 22.97

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0.73ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

0.73ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

6.3 x 4.4 mm

$ 25.63

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6.88ct Green Actinolite Cat'S Eye, Oval, Translucent

6.88ct Green Actinolite Cat'S Eye, Oval, Translucent

14.5 x 11.3 mm

$ 47.97

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34.73ct Multicolor Jasper, Oval, Opaque

34.73ct Multicolor Jasper, Oval, Opaque

35.2 x 19.6 mm

$ 46.07

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11.53ct Pink Kunzite, Pear Shape, VS

11.53ct Pink Kunzite, Pear Shape, VS

15.6 x 11.3 mm

$ 101.05

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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

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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