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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
Single
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5.22ct Yellow Citrine, Oval, VVS-VS

5.22ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 31.34

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1.65ctw Red Pyrope Garnet, Square, VVS-VS

1.65ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 12.66

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4.25ct Yellow Citrine, Pear Shape, VVS

4.25ct Yellow Citrine, Pear Shape, VVS

14 x 10 mm (calibrated)

$ 29.63

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5.07ct Yellow Citrine, Oval, VVS-VS

5.07ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 30.44

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1.29ct Purple Spinel, Cushion, VS-SI

1.29ct Purple Spinel, Cushion, VS-SI

6.6 x 5.9 mm

$ 95.63

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1.02ct Green Sphene, Oval, Transparent

1.02ct Green Sphene, Oval, Transparent

6.2 x 5.5 mm

$ 5.08

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8.68ct Brown Smoky Quartz, Emerald Cut, VVS

8.68ct Brown Smoky Quartz, Emerald Cut, VVS

12.5 x 12.5 mm

$ 16.18

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5.62ct Blue Hemimorphite Druzy, Trillion, Opaque

5.62ct Blue Hemimorphite Druzy, Trillion, Opaque

14 x 12.7 mm

$ 103.32

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0.50ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.50ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5.2 x 3.5 mm

$ 100.00

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0.12ctw Black Diamond, Square, Opaque

0.12ctw Black Diamond, Square, Opaque

2 x 2 mm (calibrated)

$ 59.76

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4.64ctw Red Pyrope Garnet, Marquise, VS

4.64ctw Red Pyrope Garnet, Marquise, VS

10 x 5.1 mm

$ 40.67

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1.78ct Orange Hessonite Garnet, Cushion, VS-SI

1.78ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 31.91

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2.37ct Yellow Apatite, Oval, VS
Apatite Product Video (514779)

2.37ct Yellow Apatite, Oval, VS

10 x 8 mm (calibrated)

$ 122.04

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19.52ct Blue Lazulite, Pear Shape, Opaque

19.52ct Blue Lazulite, Pear Shape, Opaque

33.4 x 20.9 mm

$ 19.11

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14.53ct Bi-Color Ametrine, Cushion, VS
Ametrine Product Video (571541)

14.53ct Bi-Color Ametrine, Cushion, VS

20.9 x 11.2 mm

$ 95.52

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0.25ct Yellow Diamond, Round, VS-SI
Diamond Product Video (564593)

0.25ct Yellow Diamond, Round, VS-SI

4 mm (calibrated)

$ 456.41

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12.61ct Violet Jadeite, Oval, Translucent

12.61ct Violet Jadeite, Oval, Translucent

19.9 x 12.4 mm

$ 27.63

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7.94ct Gray Jadeite, Oval, Opaque

7.94ct Gray Jadeite, Oval, Opaque

17.2 x 10.9 mm

$ 26.10

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38.50ct Blue Sodalite, Pear Shape, Opaque
Sodalite Product Video (646572)

38.50ct Blue Sodalite, Pear Shape, Opaque

41.5 x 26.3 mm

$ 38.35

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25.76ct Violet Amethyst, Oval, VVS
Amethyst Product Video (509130)

25.76ct Violet Amethyst, Oval, VVS

20.7 x 16.4 mm

$ 197.56

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2.19ct Multicolor Spectrolite, Oval, Opaque

2.19ct Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 10.01

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7.42ctw Green Prehnite, Fancy, Translucent

7.42ctw Green Prehnite, Fancy, Translucent

13.3 x 9.5 mm

$ 12.19

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8.14ctw Violet Amethyst, Oval, Transparent

8.14ctw Violet Amethyst, Oval, Transparent

12 x 8 mm (calibrated)

$ 44.59

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1.29ct White Sillimanite Cat'S Eye, Oval, Transparent

1.29ct White Sillimanite Cat'S Eye, Oval, Transparent

7.4 x 5 mm

$ 4.03

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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

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 2025
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Overall Rating -> 9 star ratings

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

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

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate
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