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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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28.98ctw Brown Rutile Quartz, Sphere / Ball, Transparent

28.98ctw Brown Rutile Quartz, Sphere / Ball, Transparent

13 mm (calibrated)

$ 31.76

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9.78ct Green Jadeite, Oval, Translucent

9.78ct Green Jadeite, Oval, Translucent

17.9 x 14.4 mm

$ 32.14

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6.65ct Yellow Apatite, Oval, VS
Apatite Product Video (385923)

6.65ct Yellow Apatite, Oval, VS

13 x 11 mm (calibrated)

$ 292.64

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2.50ctw Violet Amethyst, Oval, VVS-VS

2.50ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 13.70

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4.13ctw Red Pyrope Garnet, Square, VS

4.13ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 31.67

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2.16ct Yellow Citrine, Pear Shape, VVS-VS

2.16ct Yellow Citrine, Pear Shape, VVS-VS

9.3 x 9.4 mm

$ 16.57

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1.65ctw Multicolor Opal, Oval, Transparent
Opal Product Video (548526)

1.65ctw Multicolor Opal, Oval, Transparent

8.2 x 6.3 mm

$ 451.94

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2.93ct Orange Hessonite Garnet, Oval, VS-SI

2.93ct Orange Hessonite Garnet, Oval, VS-SI

10 x 8 mm (calibrated)

$ 51.71

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1.61ct Yellow Citrine, Round, VVS

1.61ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 12.83

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9.58ct Brown Tiger'S Eye, Oval, Opaque

9.58ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 5.63

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0.79ct Orange Hessonite Garnet, Pear Shape, SI

0.79ct Orange Hessonite Garnet, Pear Shape, SI

6.9 x 4.8 mm

$ 13.49

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13.78ct Violet Amethyst, Round, VVS

13.78ct Violet Amethyst, Round, VVS

16 mm (calibrated)

$ 109.80

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4.17ctw Multicolor Spectrolite, Oval, Opaque

4.17ctw Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 19.07

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13.64ct Multicolor Jasper, Oval, Opaque

13.64ct Multicolor Jasper, Oval, Opaque

23.2 x 17.2 mm

$ 11.27

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1.10ct Orange Hessonite Garnet, Emerald Cut, VS

1.10ct Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 20.82

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2.35ctw Yellow Beryl, Oval, VVS-VS

2.35ctw Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 46.81

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3.41ctw Yellow Citrine, Oval, VVS-VS

3.41ctw Yellow Citrine, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 18.68

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26.26ct Gray Hematite, Pear Shape, Opaque

26.26ct Gray Hematite, Pear Shape, Opaque

25 x 18 mm (calibrated)

$ 26.48

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3.32ct Red Almandine Garnet, Oval, VS

3.32ct Red Almandine Garnet, Oval, VS

10 x 8 mm (calibrated)

$ 115.74

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0.94ctw Yellow Citrine, Heart, VVS-VS

0.94ctw Yellow Citrine, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 7.49

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24.60ct Yellow Calcite, Pear Shape, Translucent

24.60ct Yellow Calcite, Pear Shape, Translucent

37.9 x 18.6 mm

$ 14.09

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7.80ct Brown Star Moonstone, Oval, Translucent

7.80ct Brown Star Moonstone, Oval, Translucent

13.5 x 10.7 mm

$ 34.18

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5.94ct Violet Amethyst, Heart, Transparent

5.94ct Violet Amethyst, Heart, Transparent

13.6 x 11.1 mm

$ 29.58

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1.91ct Green Tourmaline, Cushion, VS
Tourmaline Product Video (743356)

1.91ct Green Tourmaline, Cushion, VS

8.8 x 6.3 mm

$ 221.94

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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 -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 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 -> 10 star ratings

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate
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