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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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1.74ct Orange Hessonite Garnet, Oval, VVS-VS

1.74ct Orange Hessonite Garnet, Oval, VVS-VS

7.9 x 6.6 mm

$ 34.66

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5.53ct Brown Tiger'S Eye, Oval, Opaque

5.53ct Brown Tiger'S Eye, Oval, Opaque

14 x 10 mm (calibrated)

$ 3.25

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2.25ct Orange Hessonite Garnet, Emerald Cut, VS

2.25ct Orange Hessonite Garnet, Emerald Cut, VS

8.9 x 6.4 mm

$ 38.34

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0.89ct Yellow Beryl, Oval, VVS

0.89ct Yellow Beryl, Oval, VVS

7 x 5 mm (calibrated)

$ 17.73

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3.95ctw Red Almandine Garnet, Oval, VVS-VS
Almandine Garnet Product Video (736770)

3.95ctw Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 147.53

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13.55ct Yellow Rutile Quartz, Pear Shape, Transparent

13.55ct Yellow Rutile Quartz, Pear Shape, Transparent

21.3 x 15.6 mm

$ 46.16

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2.99ct Red Pyrope Garnet, Fancy, Translucent

2.99ct Red Pyrope Garnet, Fancy, Translucent

11.8 x 9.2 mm

$ 6.56

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1.10ct Blue Kyanite, Oval, VS-SI

1.10ct Blue Kyanite, Oval, VS-SI

7 x 5 mm (calibrated)

$ 24.10

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5.63ct Pink Rose Quartz, Square, Transparent

5.63ct Pink Rose Quartz, Square, Transparent

10.5 x 10.5 mm

$ 30.84

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0.75ct Yellow Tourmaline, Round, Transparent

0.75ct Yellow Tourmaline, Round, Transparent

5.2 mm

$ 12.59

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1.39ct Purple Spinel, Cushion, VVS-VS

1.39ct Purple Spinel, Cushion, VVS-VS

6.6 x 5.8 mm

$ 98.99

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2.50ct Blue Chalcedony, Oval, Transparent

2.50ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 4.98

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5.54ct Violet Amethyst, Cushion, VVS-VS

5.54ct Violet Amethyst, Cushion, VVS-VS

15.1 x 9 mm

$ 33.11

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20.80ctw Multicolor Fossil Coral, Oval, Opaque

20.80ctw Multicolor Fossil Coral, Oval, Opaque

19.4 x 11.3 mm

$ 26.88

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1.17ct Pink Tourmaline, Oval, Transparent

1.17ct Pink Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 20.06

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0.75ct Yellow Color-Change Diaspore, Cushion, VS

0.75ct Yellow Color-Change Diaspore, Cushion, VS

6.1 x 5 mm

$ 24.65

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4.05ct Pink Morganite, Oval, Transparent

4.05ct Pink Morganite, Oval, Transparent

11.7 x 8.9 mm

$ 16.81

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0.60ct Yellow Citrine, Cushion, Transparent

0.60ct Yellow Citrine, Cushion, Transparent

5 x 5 mm (calibrated)

$ 4.48

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13.35ctw Green Prehnite, Fancy, Transparent

13.35ctw Green Prehnite, Fancy, Transparent

18.2 x 11.6 mm

$ 20.92

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7.66ct Violet Amethyst, Oval, Transparent

7.66ct Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 41.20

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4.98ctw Green Peridot, Oval, VS

4.98ctw Green Peridot, Oval, VS

7.8 x 5.7 mm

$ 54.56

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12.94ct Brown Tiger'S Eye, Baguette, Opaque

12.94ct Brown Tiger'S Eye, Baguette, Opaque

18 x 13 mm (calibrated)

$ 13.59

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0.69ct Green Peridot, Pear Shape, VS

0.69ct Green Peridot, Pear Shape, VS

7 x 5 mm (calibrated)

$ 4.81

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5.25ct Yellow Rutile Quartz, Oval, Transparent

5.25ct Yellow Rutile Quartz, Oval, Transparent

13 x 9 mm (calibrated)

$ 14.38

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

I do enjoy this website and the wide selection. I would like to see more untreated stones. I also wasn't able to see my past order when I logged in.

Posted By Great selection, ok website in July, 2026
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

There is NOPLACE else I'd rather buy gemstones. Every single aspect exceeds expectations

Posted By Tabsatx in August, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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