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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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1.97ct Pink Morganite, Round, Transparent

1.97ct Pink Morganite, Round, Transparent

8 mm (calibrated)

$ 21.58

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0.14ctw White Diamond, Round, VVS-VS

0.14ctw White Diamond, Round, VVS-VS

2.7 mm (calibrated)

$ 250.28

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0.08ctw Black Diamond, Round, Opaque

0.08ctw Black Diamond, Round, Opaque

2 mm (calibrated)

$ 63.74

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9.28ct Gray Star Sapphire, Round, Opaque
Star Sapphire Product Video (470801)

9.28ct Gray Star Sapphire, Round, Opaque

12 mm (calibrated)

$ 355.85

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1.97ct Yellow Beryl, Oval, VVS

1.97ct Yellow Beryl, Oval, VVS

9.8 x 7.6 mm

$ 39.24

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6.30ct Pink Morganite, Round, Transparent

6.30ct Pink Morganite, Round, Transparent

13 mm (calibrated)

$ 72.41

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1.24ct Purple Spinel, Cushion, VS

1.24ct Purple Spinel, Cushion, VS

6 x 6 mm (calibrated)

$ 81.02

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0.72ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.72ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5.5 x 4.4 mm

$ 149.40

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2.18ctw Multicolor Andalusite, Round, VS
Andalusite Product Video (279596)

2.18ctw Multicolor Andalusite, Round, VS

4 mm (calibrated)

$ 107.48

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1.97ctw Yellow Golden Beryl, Oval, VS

1.97ctw Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 49.05

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1.09ct Yellow Morganite, Oval, VVS-VS

1.09ct Yellow Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 47.77

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0.10ctw Black Diamond, Round, Opaque

0.10ctw Black Diamond, Round, Opaque

2 mm (calibrated)

$ 79.68

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0.78ct Orange Morganite, Pear Shape, VVS

0.78ct Orange Morganite, Pear Shape, VVS

8 x 6 mm (calibrated)

$ 34.18

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21.45ctw Black Spinel, Fancy, Opaque

21.45ctw Black Spinel, Fancy, Opaque

18.2 x 12 mm

$ 117.51

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1.11ct Yellow Beryl, Cushion, VS

1.11ct Yellow Beryl, Cushion, VS

8 x 6 mm (calibrated)

$ 26.54

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0.60ct Purple Spinel, Cushion, VVS-VS

0.60ct Purple Spinel, Cushion, VVS-VS

4.8 x 4.3 mm

$ 41.83

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0.66ct Yellow Morganite, Pear Shape, VS

0.66ct Yellow Morganite, Pear Shape, VS

7.8 x 5.7 mm

$ 28.93

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1.26ct Yellow Beryl, Round, VVS

1.26ct Yellow Beryl, Round, VVS

7 mm (calibrated)

$ 25.10

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25.66ctw Black Spinel, Baguette, Opaque

25.66ctw Black Spinel, Baguette, Opaque

20.1 x 9.9 mm

$ 76.68

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3.54ctw Multicolor Andalusite, Round, VS

3.54ctw Multicolor Andalusite, Round, VS

3 mm (calibrated)

$ 155.48

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3.10ctw White Topaz, Cushion, VVS-VS

3.10ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 16.98

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1.06ct Purple Spinel, Cushion, VS

1.06ct Purple Spinel, Cushion, VS

6.5 x 5.7 mm

$ 74.70

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2.98ct Yellow Golden Beryl, Oval, VVS

2.98ct Yellow Golden Beryl, Oval, VVS

11 x 9 mm (calibrated)

$ 71.83

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2.02ct Brown Diamond, Cushion, VS
Diamond Product Video (460458)

2.02ct Brown Diamond, Cushion, VS

6.6 x 6.5 mm

$ 3,380.03

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

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

Posted By Bry_guy in March, 2026
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 -> 10 star ratings

Very good

Posted By Niska in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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