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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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5.56ct Green Amazonite, Cushion, Opaque

5.56ct Green Amazonite, Cushion, Opaque

10 x 10 mm (calibrated)

$ 13.59

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53.48ct Violet Amethyst, Pear Shape, IF
Amethyst Product Video (506064)

53.48ct Violet Amethyst, Pear Shape, IF

27 x 20 mm (calibrated)

$ 351.55

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1.40ct Pink Morganite, Round, VS-SI

1.40ct Pink Morganite, Round, VS-SI

7 mm (calibrated)

$ 76.69

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1.06ct Pink Tourmaline, Round, Transparent

1.06ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 17.57

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15.59ct Brown Moonstone, Fancy, Translucent

15.59ct Brown Moonstone, Fancy, Translucent

24.4 x 14.3 mm

$ 17.94

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0.32ct Orange Spessartite Garnet, Oval, VS

0.32ct Orange Spessartite Garnet, Oval, VS

5 x 3 mm (calibrated)

$ 9.56

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1.00ctw Red Pyrope Garnet, Square, VVS-VS

1.00ctw Red Pyrope Garnet, Square, VVS-VS

4.2 x 4.2 mm

$ 7.67

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18.68ct White Agate, Pear Shape, Opaque

18.68ct White Agate, Pear Shape, Opaque

27.9 x 15.4 mm

$ 29.58

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1.08ct Purple Rhodolite Garnet, Oval, VS

1.08ct Purple Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 28.68

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4.31ct Red Rhodolite Garnet, Heart, VS

4.31ct Red Rhodolite Garnet, Heart, VS

9.9 x 8.7 mm

$ 178.87

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1.45ct Green Tourmaline, Emerald Cut, VVS-VS

1.45ct Green Tourmaline, Emerald Cut, VVS-VS

17.7 x 3.7 mm

$ 34.95

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3.80ctw Brown Smoky Quartz, Round, VS

3.80ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 8.32

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8.17ctw Yellow Citrine, Oval, VVS-VS

8.17ctw Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 65.10

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20.95ct Multicolor Rainbow Pyrite, Oval, Opaque

20.95ct Multicolor Rainbow Pyrite, Oval, Opaque

24.9 x 19.5 mm

$ 54.25

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2.97ct Yellow Apatite, Pear Shape, VS-SI

2.97ct Yellow Apatite, Pear Shape, VS-SI

13 x 8.5 mm

$ 81.36

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1.00ct Orange Zircon, Oval, VVS-VS

1.00ct Orange Zircon, Oval, VVS-VS

6 x 4.9 mm

$ 14.94

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13.19ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

13.19ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

24.4 x 15 mm

$ 28.46

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22.14ctw Green Prehnite, Flower Cut, Transparent

22.14ctw Green Prehnite, Flower Cut, Transparent

16.3 x 10.8 mm

$ 33.47

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8.26ct Yellow Citrine, Oval, VVS

8.26ct Yellow Citrine, Oval, VVS

15 x 12.3 mm

$ 74.34

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0.60ct Yellow Citrine, Trillion, VS

0.60ct Yellow Citrine, Trillion, VS

6 x 6 mm (calibrated)

$ 4.98

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24.15ct Brown Jasper, Pear Shape, Opaque

24.15ct Brown Jasper, Pear Shape, Opaque

30.2 x 20.2 mm

$ 33.67

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18.54ct Violet Amethyst, Cushion, VVS

18.54ct Violet Amethyst, Cushion, VVS

20 x 15 mm (calibrated)

$ 129.26

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0.48ct Green Chrysoberyl Cat'S Eye, Oval, Translucent

0.48ct Green Chrysoberyl Cat'S Eye, Oval, Translucent

4.3 x 4.1 mm

$ 14.34

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15.56ct Violet Amethyst, Emerald Cut, VVS

15.56ct Violet Amethyst, Emerald Cut, VVS

18 x 13 mm (calibrated)

$ 108.48

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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

I think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It was great

Posted By Nik in June, 2026
Source: Bizrate

Overall Rating -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate
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