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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
Single
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0.02ct Black Diamond, Round, Opaque

0.02ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 15.94

View Gem
0.70ct Pink Morganite, Pear Shape, VVS-VS

0.70ct Pink Morganite, Pear Shape, VVS-VS

9.7 x 4.7 mm

$ 61.35

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0.55ct Purple Spinel, Cushion, VVS-VS

0.55ct Purple Spinel, Cushion, VVS-VS

5.4 x 4.3 mm

$ 38.35

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11.92ctw White Topaz, Cushion, VVS-VS

11.92ctw White Topaz, Cushion, VVS-VS

12 x 10 mm (calibrated)

$ 79.15

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3.30ct White Topaz, Oval, Transparent

3.30ct White Topaz, Oval, Transparent

10 x 8 mm (calibrated)

$ 18.08

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2.67ctw Multicolor Andalusite, Oval, VS

2.67ctw Multicolor Andalusite, Oval, VS

6.2 x 4.2 mm

$ 143.17

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1.43ct Purple Spinel, Cushion, VVS

1.43ct Purple Spinel, Cushion, VVS

7 x 5.9 mm

$ 93.34

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1.46ct Pink Morganite, Round, VS-SI

1.46ct Pink Morganite, Round, VS-SI

7.5 mm (calibrated)

$ 79.98

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0.93ct Pink Morganite, Round, VS

0.93ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 36.12

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1.15ct Purple Spinel, Cushion, VS
Spinel Product Video (725702)

1.15ct Purple Spinel, Cushion, VS

6 x 6 mm (calibrated)

$ 81.03

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13.85ctw Black Spinel, Round, Opaque

13.85ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 45.53

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0.66ct Pink Morganite, Pear Shape, VVS

0.66ct Pink Morganite, Pear Shape, VVS

8 x 5.4 mm

$ 27.39

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0.48ct Pink Morganite, Pear Shape, VVS

0.48ct Pink Morganite, Pear Shape, VVS

7.4 x 4.4 mm

$ 28.93

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0.93ct Gray Cat'S Eye Alexandrite, Round, Opaque

0.93ct Gray Cat'S Eye Alexandrite, Round, Opaque

5.5 mm (calibrated)

$ 186.00

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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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8.30ctw White Topaz, Square, VVS-VS
Topaz Product Video (341505)

8.30ctw White Topaz, Square, VVS-VS

5 x 5 mm (calibrated)

$ 66.83

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3.08ctw White Topaz, Cushion, VVS-VS

3.08ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 16.87

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0.15ct White Diamond, Round, VVS

0.15ct White Diamond, Round, VVS

3.4 mm

$ 251.84

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0.76ct Purple Spinel, Oval, VVS

0.76ct Purple Spinel, Oval, VVS

6.1 x 4.7 mm

$ 71.17

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1.39ct Yellow Beryl, Trillion, VVS-VS

1.39ct Yellow Beryl, Trillion, VVS-VS

8 x 8 mm (calibrated)

$ 33.22

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6.42ct Pink Morganite, Round, Transparent

6.42ct Pink Morganite, Round, Transparent

11 mm (calibrated)

$ 64.64

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0.18ctw White Diamond, Round, VVS-VS

0.18ctw White Diamond, Round, VVS-VS

2.8 mm (calibrated)

$ 327.04

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0.09ct White Diamond, Marquise, VVS
Diamond Product Video (740682)

0.09ct White Diamond, Marquise, VVS

4 x 2 mm (calibrated)

$ 312.80

View Gem
0.50ct Yellow Beryl, Pear Shape, VS

0.50ct Yellow Beryl, Pear Shape, VS

6.9 x 4.6 mm

$ 9.96

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

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Over pretty well experience the your website no complaints about it very easy reliable service provided

Posted By Blas in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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