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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

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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1.22ct Purple Spinel, Cushion, VVS-VS

1.22ct Purple Spinel, Cushion, VVS-VS

6 x 6 mm (calibrated)

$ 84.21

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1.07ct Purple Spinel, Pear Shape, VVS-VS
Spinel Product Video (353079)

1.07ct Purple Spinel, Pear Shape, VVS-VS

7.3 x 5.5 mm

$ 177.62

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0.63ct Purple Spinel, Cushion, VS

0.63ct Purple Spinel, Cushion, VS

5.4 x 4.8 mm

$ 52.29

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4.47ct Pink Morganite, Trillion, Translucent

4.47ct Pink Morganite, Trillion, Translucent

12.6 x 11.9 mm

$ 48.97

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1.97ct Brown Rutile Topaz, Pear Shape, Transparent

1.97ct Brown Rutile Topaz, Pear Shape, Transparent

10 x 7 mm (calibrated)

$ 40.88

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1.35ct Purple Spinel, Cushion, VVS

1.35ct Purple Spinel, Cushion, VVS

6.9 x 5.7 mm

$ 75.51

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0.85ct Yellow Beryl, Pear Shape, VS

0.85ct Yellow Beryl, Pear Shape, VS

8 x 5.2 mm

$ 18.63

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0.53ct Pink Spinel, Cushion, VS

0.53ct Pink Spinel, Cushion, VS

5.3 x 4 mm

$ 36.95

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1.66ct Pink Morganite, Oval, VVS-VS

1.66ct Pink Morganite, Oval, VVS-VS

9.4 x 7.2 mm

$ 72.75

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3.46ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (381931)

3.46ctw Multicolor Andalusite, Round, VS

3.7 mm

$ 151.97

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0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 23.90

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1.24ctw Pink Morganite, Pear Shape, VVS-VS

1.24ctw Pink Morganite, Pear Shape, VVS-VS

8.1 x 3.6 mm

$ 135.85

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0.60ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.60ct Green Cat'S Eye Alexandrite, Oval, Opaque

4.9 x 4.6 mm

$ 124.50

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 17.11

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0.58ct Purple Spinel, Round, VVS

0.58ct Purple Spinel, Round, VVS

5 mm (calibrated)

$ 19.57

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5.69ct White Topaz, Oval, VS

5.69ct White Topaz, Oval, VS

12 x 10 mm (calibrated)

$ 37.78

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0.34ct Pink Morganite, Oval, VS

0.34ct Pink Morganite, Oval, VS

5.5 x 4.2 mm

$ 15.24

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2.62ctw Yellow Beryl, Trillion, VVS

2.62ctw Yellow Beryl, Trillion, VVS

8.1 x 7.1 mm

$ 52.19

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0.83ct Pink Morganite, Pear Shape, VVS-VS

0.83ct Pink Morganite, Pear Shape, VVS-VS

8.6 x 5 mm

$ 72.75

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0.62ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.62ct Green Cat'S Eye Alexandrite, Oval, Opaque

5.1 x 3.6 mm

$ 128.65

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0.91ct Orange Morganite, Oval, VS

0.91ct Orange Morganite, Oval, VS

7.9 x 5.7 mm

$ 40.79

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1.52ctw Yellow Beryl, Trillion, VS

1.52ctw Yellow Beryl, Trillion, VS

7 x 7 mm (calibrated)

$ 30.28

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0.64ct Gray Spinel, Oval, VS

0.64ct Gray Spinel, Oval, VS

5.5 x 4.8 mm

$ 53.12

View Gem
1.17ct Pink Morganite, Round, VS

1.17ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 45.45

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 -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I've been looking for.

Posted By Tree Dog in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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