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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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0.83ct Purple Spinel, Cushion, VS

0.83ct Purple Spinel, Cushion, VS

5.9 x 5.1 mm

$ 41.02

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0.36ct Red Spinel, Baguette, VVS-VS

0.36ct Red Spinel, Baguette, VVS-VS

3.7 x 3 mm

$ 29.88

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2.94ct Yellow Golden Beryl, Oval, VVS-VS

2.94ct Yellow Golden Beryl, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 73.57

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1.49ct Pink Morganite, Round, VS

1.49ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 81.62

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5.39ct Pink Morganite, Trillion, Transparent

5.39ct Pink Morganite, Trillion, Transparent

13 x 13 mm (calibrated)

$ 53.68

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3.78ctw White Topaz, Square, VVS-VS

3.78ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 30.44

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5.28ct Pink Morganite, Pear Shape, Translucent

5.28ct Pink Morganite, Pear Shape, Translucent

15.6 x 9.8 mm

$ 21.91

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1.23ct Pink Morganite, Round, VS

1.23ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 94.33

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13.38ctw Black Spinel, Round, Opaque

13.38ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 41.63

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0.41ct Pink Morganite, Round, VS

0.41ct Pink Morganite, Round, VS

5 mm (calibrated)

$ 18.38

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3.01ct Pink Morganite, Trillion, Transparent

3.01ct Pink Morganite, Trillion, Transparent

10 x 10 mm (calibrated)

$ 32.98

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4.71ct Pink Morganite, Oval, Transparent
Morganite Product Video (631648)

4.71ct Pink Morganite, Oval, Transparent

12 x 10 mm (calibrated)

$ 46.91

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12.03ctw White Topaz, Oval, VS

12.03ctw White Topaz, Oval, VS

12 x 10 mm (calibrated)

$ 79.88

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1.73ct Purple Spinel, Cushion, VVS-VS

1.73ct Purple Spinel, Cushion, VVS-VS

7.4 x 6.7 mm

$ 144.74

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0.26ct Pink Morganite, Round, VS

0.26ct Pink Morganite, Round, VS

4.5 mm (calibrated)

$ 10.79

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11.92ctw White Topaz, Oval, VVS-VS
Topaz Product Video (751391)

11.92ctw White Topaz, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 79.15

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0.41ct Blue Aquamarine, Round, VVS-VS

0.41ct Blue Aquamarine, Round, VVS-VS

5 mm (calibrated)

$ 57.17

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0.29ctw Black Diamond, Round, Opaque
Diamond Product Video (682714)

0.29ctw Black Diamond, Round, Opaque

3 mm (calibrated)

$ 114.96

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2.24ct Yellow Beryl, Oval, VS

2.24ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 53.54

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 16.28

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1.43ct Red Spinel, Cushion, VS

1.43ct Red Spinel, Cushion, VS

6.7 x 5.9 mm

$ 154.30

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1.42ct Purple Sapphire, Cushion, VS
Sapphire Product Video (448534)

1.42ct Purple Sapphire, Cushion, VS

7.8 x 5.2 mm

$ 749.87

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3.48ct Blue Aquamarine, Pear Shape, Translucent

3.48ct Blue Aquamarine, Pear Shape, Translucent

13 x 9 mm (calibrated)

$ 72.21

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4.41ct Yellow Cat'S Eye Beryl, Oval, Translucent

4.41ct Yellow Cat'S Eye Beryl, Oval, Translucent

12 x 8 mm (calibrated)

$ 769.85

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 -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection of gems at a reasonable price

Posted By Curt in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

Posted By Bry_guy in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

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