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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
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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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1.19Ct Medium Dark-Purple Sapphire, Pear Shape, Vs-Si
Sapphire Product Video (447865)

1.19Ct Medium Dark-Purple Sapphire, Pear Shape, Vs-Si

7.8 x 5.8 mm

$ 572.79

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10.80Ct Rose Pink Morganite, Pear Shape, Translucent
Morganite Product Video (604848)

10.80Ct Rose Pink Morganite, Pear Shape, Translucent

20.1 x 12.7 mm

$ 142.56

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3.11Ctw Multicolor Andalusite, Round, Vs

3.11Ctw Multicolor Andalusite, Round, Vs

3.3 mm

$ 164.74

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40.56Ct Deep Aqua Blue Aquamarine, Emerald Cut, Vvs
Aquamarine Product Video (264265)

40.56Ct Deep Aqua Blue Aquamarine, Emerald Cut, Vvs

22 x 17.5 mm

$ 12,995.00

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3.23Ctw Multicolor Andalusite, Round, Vs-Si
Andalusite Product Video (310827)

3.23Ctw Multicolor Andalusite, Round, Vs-Si

4 mm (calibrated)

$ 172.80

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32.10Ct Light Bluish Green Cat's Eye Aquamarine, Oval, Translucent
Cat's Eye Aquamarine Product Video (333933)

32.10Ct Light Bluish Green Cat's Eye Aquamarine, Oval, Translucent

22.5 x 16.3 mm

$ 693.36

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0.11Ct Black Diamond, Square, Opaque
Diamond Product Video (677914)

0.11Ct Black Diamond, Square, Opaque

2.4 x 2.3 mm

$ 55.77

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1.54Ct Medium Purple Sapphire, Cushion, Vs
Sapphire Product Video (447867)

1.54Ct Medium Purple Sapphire, Cushion, Vs

6.8 x 5.4 mm

$ 815.39

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11.29Ctw Medium Pink Morganite, Oval, Translucent

11.29Ctw Medium Pink Morganite, Oval, Translucent

15 x 9.1 mm

$ 149.03

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5.81Ct Pink Tone Morganite, Pear Shape, Transparent

5.81Ct Pink Tone Morganite, Pear Shape, Transparent

14 x 10 mm (calibrated)

$ 63.91

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2.37Ctw Multicolor Andalusite, Round, Vs-Si

2.37Ctw Multicolor Andalusite, Round, Vs-Si

4 mm (calibrated)

$ 140.78

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1.05Ct Grayish Violet Spinel, Pear Shape, Vs
Spinel Product Video (402831)

1.05Ct Grayish Violet Spinel, Pear Shape, Vs

7.4 x 5.8 mm

$ 211.00

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6.01Ct Light Blue Aquamarine, Emerald Cut, Vs
Aquamarine Product Video (412445)

6.01Ct Light Blue Aquamarine, Emerald Cut, Vs

12.6 x 8.2 mm

$ 1,150.31

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3.29Ctw Warm Yellow Golden Beryl, Oval, Vvs-Vs

3.29Ctw Warm Yellow Golden Beryl, Oval, Vvs-Vs

9 x 7 mm (calibrated)

$ 86.86

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1.31Ct Light Lemon Yellow Chrysoberyl, Pear Shape, Vvs-Vs
Chrysoberyl Product Video (366492)

1.31Ct Light Lemon Yellow Chrysoberyl, Pear Shape, Vvs-Vs

9 x 6 mm (calibrated)

$ 183.92

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7.18Ct Salmon Pink Morganite, Oval, Transparent

7.18Ct Salmon Pink Morganite, Oval, Transparent

11.9 x 10.8 mm

$ 94.78

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7.19Ct Light Coral Pink Morganite, Oval, Transparent

7.19Ct Light Coral Pink Morganite, Oval, Transparent

14.9 x 11 mm

$ 86.28

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10.51Ctw Medium Light-Pink Morganite, Oval, Transparent

10.51Ctw Medium Light-Pink Morganite, Oval, Transparent

12 x 10 mm (calibrated)

$ 138.73

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1.32Ct Cognac Diamond, Pear Shape, Si
Diamond Product Video (382046)

1.32Ct Cognac Diamond, Pear Shape, Si

8.3 x 5.4 mm

$ 3,095.53

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0.17Ct Medium-Light Yellow Diamond, Round, Vs-Si
Diamond Product Video (543911)

0.17Ct Medium-Light Yellow Diamond, Round, Vs-Si

3.5 mm (calibrated)

$ 369.49

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0.14Ct Black Diamond, Round, Opaque
Diamond Product Video (699335)

0.14Ct Black Diamond, Round, Opaque

3 mm (calibrated)

$ 61.88

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1.47Ct Medium Yellow Chrysoberyl, Pear Shape, Vvs
Chrysoberyl Product Video (366656)

1.47Ct Medium Yellow Chrysoberyl, Pear Shape, Vvs

8.4 x 6.3 mm

$ 187.63

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1.73Ct Very Light Rose Pink Morganite, Round, Vvs-Vs

1.73Ct Very Light Rose Pink Morganite, Round, Vvs-Vs

7.5 mm (calibrated)

$ 159.85

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1.70Ct Cognac Diamond, Round, Si
Diamond Product Video (382092)

1.70Ct Cognac Diamond, Round, Si

7.5 mm (calibrated)

$ 4,784.02

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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

The stones are very nice.

Posted By Mvk in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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