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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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4.30ctw Orange Sunstone, Oval, Transparent

4.30ctw Orange Sunstone, Oval, Transparent

10 x 8 mm (calibrated)

$ 27.48

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13.37ctw Brown Smoky Quartz, Pear Shape, VVS-VS
Smoky Quartz Product Video (587781)

13.37ctw Brown Smoky Quartz, Pear Shape, VVS-VS

15.1 x 11 mm

$ 43.94

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1.20ct Orange Hessonite Garnet, Pear Shape, SI

1.20ct Orange Hessonite Garnet, Pear Shape, SI

8 x 5.7 mm

$ 26.29

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1.20ct Brown Tiger'S Eye, Marquise, Opaque

1.20ct Brown Tiger'S Eye, Marquise, Opaque

10 x 5 mm (calibrated)

$ 1.55

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2.15ct Orange Hessonite Garnet, Emerald Cut, VS

2.15ct Orange Hessonite Garnet, Emerald Cut, VS

8 x 6 mm (calibrated)

$ 35.91

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51.51ct Multicolor Variscite, Cushion, Opaque
Variscite Product Video (472206)

51.51ct Multicolor Variscite, Cushion, Opaque

33.9 x 29.9 mm

$ 41.77

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2.08ct Orange Hessonite Garnet, Emerald Cut, VS-SI

2.08ct Orange Hessonite Garnet, Emerald Cut, VS-SI

9 x 6 mm (calibrated)

$ 34.31

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60.73ctw Multicolor Labradorite, Round, Translucent

60.73ctw Multicolor Labradorite, Round, Translucent

25.1 mm

$ 134.28

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1.06ct Orange Hessonite Garnet, Round, VS

1.06ct Orange Hessonite Garnet, Round, VS

6 mm (calibrated)

$ 18.51

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1.62ct Pink Tourmaline, Oval, Transparent

1.62ct Pink Tourmaline, Oval, Transparent

7.6 x 5.7 mm

$ 40.34

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52.53ct Violet Amethyst, Fancy, VVS
Amethyst Product Video (679800)

52.53ct Violet Amethyst, Fancy, VVS

27 x 20 mm (calibrated)

$ 418.56

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4.35ctw Orange Hessonite Garnet, Cushion, VS-SI

4.35ctw Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 86.65

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34.23ct Brown Tiger'S Eye, Oval, Opaque

34.23ct Brown Tiger'S Eye, Oval, Opaque

25 x 18 mm (calibrated)

$ 34.10

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17.33ctw Green Amazonite, Marquise, Opaque

17.33ctw Green Amazonite, Marquise, Opaque

19.9 x 10.1 mm

$ 13.80

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8.33ct Pink Strawberry Quartz, Oval, Translucent

8.33ct Pink Strawberry Quartz, Oval, Translucent

16 x 12 mm (calibrated)

$ 52.38

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1.29ct Violet Spinel, Cushion, VVS-VS

1.29ct Violet Spinel, Cushion, VVS-VS

6.7 x 5.5 mm

$ 84.80

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8.87ctw Pink Strawberry Quartz, Oval, Transparent

8.87ctw Pink Strawberry Quartz, Oval, Transparent

11.1 x 9.9 mm

$ 46.82

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113.40ct Green Bloodstone, Square, Opaque

113.40ct Green Bloodstone, Square, Opaque

31.1 x 30.5 mm

$ 39.53

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3.09ctw Orange Moonstone, Round, Translucent

3.09ctw Orange Moonstone, Round, Translucent

7 mm (calibrated)

$ 6.77

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2.25ct Orange Spessartite Garnet, Trillion, VVS-VS
Spessartite Garnet Product Video (714467)

2.25ct Orange Spessartite Garnet, Trillion, VVS-VS

7 x 7 mm (calibrated)

$ 541.58

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1.53ct Brown Tiger'S Eye, Marquise, Opaque

1.53ct Brown Tiger'S Eye, Marquise, Opaque

10 x 5 mm (calibrated)

$ 1.98

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1.83ct Orange Hessonite Garnet, Emerald Cut, VS

1.83ct Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 36.09

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1.19ct Yellow Sphene, Round, VS-SI
Sphene Product Video (526305)

1.19ct Yellow Sphene, Round, VS-SI

6.5 mm (calibrated)

$ 71.71

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5.65ct Multicolor Agate, Oval, Opaque

5.65ct Multicolor Agate, Oval, Opaque

12 x 10.7 mm

$ 3.75

View Gem
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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 -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
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

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 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
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