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Home › Gemstones › Natural Untreated Gemstones

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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1.52ct Purple Spinel, Cushion, VS

1.52ct Purple Spinel, Cushion, VS

6.5 x 6.2 mm

$ 82.31

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4.04ctw White Topaz, Square, VS

4.04ctw White Topaz, Square, VS

4 x 4 mm (calibrated)

$ 30.98

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4.37ctw White Topaz, Square, VVS-VS

4.37ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 35.19

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0.19ct White Diamond, Round, VS

0.19ct White Diamond, Round, VS

3.8 mm

$ 319.00

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0.98ct Black Diamond, Square, Opaque
Diamond Product Video (677847)

0.98ct Black Diamond, Square, Opaque

4.9 x 4.7 mm

$ 558.27

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0.88ct Yellow Beryl, Oval, VVS

0.88ct Yellow Beryl, Oval, VVS

8 x 6 mm (calibrated)

$ 17.53

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15.42ctw Pink Morganite, Oval, Transparent
Morganite Product Video (595004)

15.42ctw Pink Morganite, Oval, Transparent

14 x 12 mm (calibrated)

$ 168.94

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1.52ctw Orange Morganite, Pear Shape, VS

1.52ctw Orange Morganite, Pear Shape, VS

7.9 x 5.8 mm

$ 91.59

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2.34ctw Yellow Golden Beryl, Oval, VVS-VS

2.34ctw Yellow Golden Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 64.09

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3.74ctw Multicolor Andalusite, Round, VS

3.74ctw Multicolor Andalusite, Round, VS

3 mm (calibrated)

$ 164.44

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0.99ct Black Diamond, Square, Opaque
Diamond Product Video (677844)

0.99ct Black Diamond, Square, Opaque

5.1 x 4.8 mm

$ 563.98

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1.14ct Purple Spinel, Cushion, VVS

1.14ct Purple Spinel, Cushion, VVS

6.8 x 5.6 mm

$ 113.54

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0.97ct Pink Morganite, Pear Shape, VVS-VS

0.97ct Pink Morganite, Pear Shape, VVS-VS

9.8 x 5.2 mm

$ 85.02

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1.71ct Yellow Beryl, Round, VVS

1.71ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 34.06

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3.87ctw Yellow Golden Beryl, Oval, VVS-VS

3.87ctw Yellow Golden Beryl, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 106.01

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1.18ct Purple Spinel, Cushion, VVS-VS

1.18ct Purple Spinel, Cushion, VVS-VS

6.7 x 5.7 mm

$ 64.64

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1.94ct Yellow Beryl, Round, VVS

1.94ct Yellow Beryl, Round, VVS

9 mm (calibrated)

$ 38.64

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1.36ct Purple Spinel, Oval, VS

1.36ct Purple Spinel, Oval, VS

6.9 x 6 mm

$ 156.46

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11.99ctw Black Spinel, Round, Opaque

11.99ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 39.41

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0.65ct Yellow Beryl, Oval, VS

0.65ct Yellow Beryl, Oval, VS

7 x 5 mm (calibrated)

$ 12.41

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1.51ct Violet Spinel, Cushion, VS

1.51ct Violet Spinel, Cushion, VS

6.7 x 6.4 mm

$ 125.79

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0.15ct Black Diamond, Square, Opaque

0.15ct Black Diamond, Square, Opaque

2.6 x 2.7 mm

$ 74.70

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7.14ct Pink Morganite, Trillion, Transparent

7.14ct Pink Morganite, Trillion, Transparent

13 x 13 mm (calibrated)

$ 78.23

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7.84ctw Black Spinel, Round, Opaque

7.84ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 25.76

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

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

Easy to conduct search, good amount of stock to select from along with variety of prices.

Posted By Que in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!

Posted By Matthew K. in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 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
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