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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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Lots
Faceted
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7.21ct Multicolor Agate, Fancy, Translucent

7.21ct Multicolor Agate, Fancy, Translucent

10.3 x 8.4 mm

$ 12.62

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10.04ct Black Tourmaline, Oval, Opaque

10.04ct Black Tourmaline, Oval, Opaque

15.6 x 12.5 mm

$ 50.00

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1.97ct Orange Pyrope Garnet, Fancy, Translucent

1.97ct Orange Pyrope Garnet, Fancy, Translucent

12.6 x 7.9 mm

$ 4.94

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4.19ct Pink Morganite, Oval, Translucent

4.19ct Pink Morganite, Oval, Translucent

12 x 8.9 mm

$ 45.91

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7.05ct Green Actinolite Cat'S Eye, Oval, Translucent

7.05ct Green Actinolite Cat'S Eye, Oval, Translucent

14.5 x 10.8 mm

$ 49.15

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6.39ct Multicolor Rainbow Pyrite, Fancy, Opaque

6.39ct Multicolor Rainbow Pyrite, Fancy, Opaque

16.3 x 11.1 mm

$ 19.09

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5.78ct Pink Kunzite, Emerald Cut, VVS-VS

5.78ct Pink Kunzite, Emerald Cut, VVS-VS

11.7 x 8.6 mm

$ 152.55

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1.17ct Yellow Citrine, Round, VVS

1.17ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 9.32

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1.15ct Multicolor Opal, Oval, Transparent

1.15ct Multicolor Opal, Oval, Transparent

9 x 7 mm (calibrated)

$ 36.17

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11.60ct Multicolor Boulder Opal, Fancy, Opaque

11.60ct Multicolor Boulder Opal, Fancy, Opaque

19.8 x 15.7 mm

$ 57.77

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2.08ctw Orange Moonstone, Pear Shape, Transparent

2.08ctw Orange Moonstone, Pear Shape, Transparent

9 x 6 mm (calibrated)

$ 4.14

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1.29ct Purple Rhodolite Garnet, Oval, VS-SI

1.29ct Purple Rhodolite Garnet, Oval, VS-SI

7 x 5 mm (calibrated)

$ 34.26

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5.37ct Multicolor Fire Agate, Trillion, Translucent

5.37ct Multicolor Fire Agate, Trillion, Translucent

15 x 10 mm (calibrated)

$ 46.71

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58.04ct Violet Charoite, Baguette, Opaque
Charoite Product Video (434935)

58.04ct Violet Charoite, Baguette, Opaque

44.6 x 19 mm

$ 95.38

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9.85ct Pink Kunzite, Emerald Cut, VS
Kunzite Product Video (710483)

9.85ct Pink Kunzite, Emerald Cut, VS

15 x 10 mm (calibrated)

$ 259.99

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9.15ct Brown Tiger'S Eye, Oval, Opaque

9.15ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 9.11

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1.11ctw Green Peridot, Marquise, VVS-VS

1.11ctw Green Peridot, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 16.58

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4.58ct Yellow Citrine, Oval, VVS-VS

4.58ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 36.50

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1.00ct Brown Tiger'S Eye, Pear Shape, Opaque

1.00ct Brown Tiger'S Eye, Pear Shape, Opaque

6.4 x 5.9 mm

$ 1.29

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2.27ct Multicolor Spectrolite, Oval, Opaque

2.27ct Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 10.70

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8.26ct Green Maw-Sit-Sit, Pear Shape, Opaque

8.26ct Green Maw-Sit-Sit, Pear Shape, Opaque

16.4 x 11.2 mm

$ 25.51

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20.52ct Multicolor Jasper, Fancy, Opaque

20.52ct Multicolor Jasper, Fancy, Opaque

24.4 x 19.8 mm

$ 11.25

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1.24ct Green Peridot, Oval, VS

1.24ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 11.11

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29.26ct Green Malachite, Oval, Opaque

29.26ct Green Malachite, Oval, Opaque

21.2 x 15.6 mm

$ 22.44

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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

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 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

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

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

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
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