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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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0.90ct Green Peridot, Oval, VVS-VS

0.90ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 6.27

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0.43ct Yellow Citrine, Heart, VVS

0.43ct Yellow Citrine, Heart, VVS

5 x 5 mm (calibrated)

$ 2.86

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10.70ct Brown Tiger'S Eye, Oval, Opaque

10.70ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 6.28

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51.65ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

51.65ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

45.4 x 20.8 mm

$ 51.44

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3.17ctw Orange Hessonite Garnet, Emerald Cut, VS

3.17ctw Orange Hessonite Garnet, Emerald Cut, VS

6 x 6 mm (calibrated)

$ 62.52

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7.44ct Black Tourmaline, Oval, Opaque

7.44ct Black Tourmaline, Oval, Opaque

13 x 11 mm (calibrated)

$ 37.05

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7.25ct Orange Star Moonstone, Oval, Translucent

7.25ct Orange Star Moonstone, Oval, Translucent

15 x 10 mm (calibrated)

$ 31.77

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11.11ct White Dendritic Agate, Pear Shape, Opaque

11.11ct White Dendritic Agate, Pear Shape, Opaque

17.5 x 15.5 mm

$ 22.13

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32.00ct Brown Jasper, Fancy, Opaque
Jasper Product Video (515611)

32.00ct Brown Jasper, Fancy, Opaque

30.3 x 25.4 mm

$ 49.09

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0.26ct Violet Iolite, Baguette, VS-SI

0.26ct Violet Iolite, Baguette, VS-SI

5 x 3 mm (calibrated)

$ 10.36

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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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16.21ct Red Star Garnet, Oval, Opaque

16.21ct Red Star Garnet, Oval, Opaque

16.6 x 14 mm

$ 15.99

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39.76ct Multicolor Rhodochrosite, Oval, Translucent

39.76ct Multicolor Rhodochrosite, Oval, Translucent

33.5 x 18.1 mm

$ 67.96

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4.87ct Yellow Citrine, Oval, VVS-VS

4.87ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 29.24

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0.32ct Blue Kyanite, Round, SI

0.32ct Blue Kyanite, Round, SI

4.2 mm

$ 7.97

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1.56ct Multicolor Opal, Marquise, Transparent

1.56ct Multicolor Opal, Marquise, Transparent

16.4 x 6.5 mm

$ 69.92

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11.53ct Green Malachite, Baguette, Opaque

11.53ct Green Malachite, Baguette, Opaque

11.6 x 10.7 mm

$ 13.78

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2.04ctw Yellow Golden Beryl, Oval, VS

2.04ctw Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 55.88

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12.62ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

12.62ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

26 x 15.1 mm

$ 32.68

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1.23ct Orange Moonstone, Cushion, Translucent

1.23ct Orange Moonstone, Cushion, Translucent

6 x 6 mm (calibrated)

$ 2.45

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1.00ctw Red Pyrope Garnet, Square, VVS-VS

1.00ctw Red Pyrope Garnet, Square, VVS-VS

4 x 4 mm (calibrated)

$ 7.67

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2.33ct Green Peridot, Cushion, VS-SI

2.33ct Green Peridot, Cushion, VS-SI

8.1 x 6.9 mm

$ 91.38

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10.02ctw Multicolor Labradorite, Marquise, Translucent

10.02ctw Multicolor Labradorite, Marquise, Translucent

16 x 8 mm (calibrated)

$ 22.15

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2.92ctw White Topaz, Cushion, VVS-VS

2.92ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 15.99

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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

It was great

Posted By Nik in June, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
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

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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