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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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0.43ct Blue Kyanite, Round, SI

0.43ct Blue Kyanite, Round, SI

4 mm (calibrated)

$ 10.71

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2.09ct Yellow Golden Beryl, Round, VVS

2.09ct Yellow Golden Beryl, Round, VVS

9 mm (calibrated)

$ 50.38

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1.22ct Orange Sunstone, Oval, Translucent

1.22ct Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 8.51

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18.33ct Green Serpentine, Oval, Translucent

18.33ct Green Serpentine, Oval, Translucent

23.1 x 13.7 mm

$ 39.25

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0.45ct Yellow Spessartite Garnet, Oval, VS

0.45ct Yellow Spessartite Garnet, Oval, VS

4.8 x 3.9 mm

$ 13.45

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0.73ct Green Peridot, Oval, VS

0.73ct Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 5.09

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1.44ct Brown Kornerupine, Oval, VS
Kornerupine Product Video (453169)

1.44ct Brown Kornerupine, Oval, VS

7.7 x 6.4 mm

$ 119.52

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0.56ct Pink Spinel, Cushion, VS

0.56ct Pink Spinel, Cushion, VS

4.9 x 4.4 mm

$ 101.26

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2.69ctw Gray Sillimanite Cat'S Eye, Oval, Transparent

2.69ctw Gray Sillimanite Cat'S Eye, Oval, Transparent

7.3 x 5.4 mm

$ 8.50

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1.38ct Pink Tourmaline, Oval, VVS-VS

1.38ct Pink Tourmaline, Oval, VVS-VS

7.1 x 6.3 mm

$ 211.67

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6.24ct Multicolor Labradorite, Round, Translucent

6.24ct Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 15.17

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32.47ct Multicolor Jasper, Oval, Opaque

32.47ct Multicolor Jasper, Oval, Opaque

31.9 x 23.4 mm

$ 26.68

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1.02ct Yellow Morganite, Oval, VS

1.02ct Yellow Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 40.14

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44.30ct Multicolor Jasper, Oval, Opaque

44.30ct Multicolor Jasper, Oval, Opaque

35.9 x 24 mm

$ 45.14

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8.21ctw White Topaz, Heart, VVS-VS

8.21ctw White Topaz, Heart, VVS-VS

10 x 10 mm (calibrated)

$ 68.14

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1.78ctw White Cat'S Eye Moonstone, Oval, Transparent

1.78ctw White Cat'S Eye Moonstone, Oval, Transparent

7 x 5.3 mm

$ 3.90

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9.79ctw Brown Zircon, Oval, Transparent

9.79ctw Brown Zircon, Oval, Transparent

6.1 x 4.3 mm

$ 62.57

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6.71ctw Pink Rose Quartz, Emerald Cut, Transparent

6.71ctw Pink Rose Quartz, Emerald Cut, Transparent

9.6 x 9.5 mm

$ 36.76

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1.58ct Orange Hessonite Garnet, Baguette, SI

1.58ct Orange Hessonite Garnet, Baguette, SI

7.6 x 6.1 mm

$ 29.84

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1.55ct Green Sphene, Oval, Transparent

1.55ct Green Sphene, Oval, Transparent

7.1 x 5.6 mm

$ 7.72

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24.11ctw Multicolor Jasper, Sphere / Ball, Opaque

24.11ctw Multicolor Jasper, Sphere / Ball, Opaque

12 mm (calibrated)

$ 26.41

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2.63ct Yellow Citrine, Oval, VVS

2.63ct Yellow Citrine, Oval, VVS

11 x 9 mm (calibrated)

$ 18.33

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2.34ct Pink Tourmaline, Emerald Cut, VS-SI

2.34ct Pink Tourmaline, Emerald Cut, VS-SI

8.8 x 5.7 mm

$ 176.90

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17.45ct Multicolor Jasper, Oval, Opaque

17.45ct Multicolor Jasper, Oval, Opaque

25 x 18 mm (calibrated)

$ 14.43

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 -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
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

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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