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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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1.32ct Pink Morganite, Round, VS

1.32ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 72.31

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0.52ct Pink Morganite, Pear Shape, VS

0.52ct Pink Morganite, Pear Shape, VS

6.6 x 5 mm

$ 23.31

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2.35ctw Multicolor Andalusite, Oval, VVS-VS

2.35ctw Multicolor Andalusite, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 128.73

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2.96ctw Yellow Golden Beryl, Oval, VVS-VS

2.96ctw Yellow Golden Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 64.86

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1.42ctw Multicolor Andalusite, Pear Shape, VS

1.42ctw Multicolor Andalusite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 75.85

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0.73ct Purple Spinel, Cushion, VVS-VS

0.73ct Purple Spinel, Cushion, VVS-VS

5.7 x 4.7 mm

$ 26.10

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1.71ct Purple Spinel, Cushion, VS

1.71ct Purple Spinel, Cushion, VS

8.1 x 6.8 mm

$ 170.32

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0.93ct Purple Spinel, Cushion, VVS-VS

0.93ct Purple Spinel, Cushion, VVS-VS

6.4 x 5.3 mm

$ 138.94

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0.20ctw White Diamond, Round, VVS-VS

0.20ctw White Diamond, Round, VVS-VS

3 mm (calibrated)

$ 357.53

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6.04ct White Topaz, Cushion, VVS-VS

6.04ct White Topaz, Cushion, VVS-VS

12 x 10 mm (calibrated)

$ 40.11

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1.22ct Purple Spinel, Cushion, VS
Spinel Product Video (546202)

1.22ct Purple Spinel, Cushion, VS

6 x 6 mm (calibrated)

$ 72.35

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0.79ct Yellow Morganite, Oval, VS

0.79ct Yellow Morganite, Oval, VS

7.5 x 5.7 mm

$ 34.62

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0.78ct Yellow Morganite, Pear Shape, VS

0.78ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 34.18

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1.85ctw Orange Morganite, Pear Shape, VS

1.85ctw Orange Morganite, Pear Shape, VS

8.5 x 6 mm

$ 111.49

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4.29ct Pink Morganite, Oval, Transparent

4.29ct Pink Morganite, Oval, Transparent

13.6 x 8.1 mm

$ 17.80

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0.55ct Purple Spinel, Round, VVS-VS

0.55ct Purple Spinel, Round, VVS-VS

5 mm (calibrated)

$ 28.84

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4.36ctw White Topaz, Cushion, VVS-VS

4.36ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 23.89

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0.62ct Purple Spinel, Oval, VVS-VS

0.62ct Purple Spinel, Oval, VVS-VS

5.9 x 4.9 mm

$ 51.46

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8.76ctw White Topaz, Heart, VS

8.76ctw White Topaz, Heart, VS

10 x 10 mm (calibrated)

$ 72.71

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1.40ct Yellow Beryl, Round, VVS-VS

1.40ct Yellow Beryl, Round, VVS-VS

8 mm (calibrated)

$ 27.89

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0.94ct Pink Morganite, Oval, VS

0.94ct Pink Morganite, Oval, VS

7.2 x 5.6 mm

$ 41.19

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0.12ct Pink Morganite, Round, VVS

0.12ct Pink Morganite, Round, VVS

3.4 mm

$ 4.98

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8.01ct Blue Aquamarine, Oval, Translucent

8.01ct Blue Aquamarine, Oval, Translucent

14 x 12 mm (calibrated)

$ 166.21

View Gem
0.48ct Pink Morganite, Marquise, VS

0.48ct Pink Morganite, Marquise, VS

8.5 x 3.9 mm

$ 17.93

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

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 -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image