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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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0.87ct Purple Spinel, Cushion, VS-SI

0.87ct Purple Spinel, Cushion, VS-SI

5.5 x 4.9 mm

$ 43.01

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0.65ct Pink Spinel, Cushion, VS

0.65ct Pink Spinel, Cushion, VS

4.6 x 4.5 mm

$ 45.32

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3.22ct Pink Morganite, Pear Shape, Transparent

3.22ct Pink Morganite, Pear Shape, Transparent

13 x 9 mm (calibrated)

$ 35.28

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2.03ctw Orange Morganite, Oval, VS

2.03ctw Orange Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 122.33

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1.54ct Yellow Beryl, Oval, VVS

1.54ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 30.68

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4.58ctw White Topaz, Cushion, VVS-VS

4.58ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 25.09

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2.09ctw Pink Morganite, Oval, VS

2.09ctw Pink Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 114.49

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14.43ct Blue Cat'S Eye Aquamarine, Oval, Transparent
Cat's Eye Aquamarine Product Video (382721)

14.43ct Blue Cat'S Eye Aquamarine, Oval, Transparent

17.5 x 10.5 mm

$ 253.59

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1.55ct Yellow Beryl, Round, VVS

1.55ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 30.88

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0.53ct Purple Spinel, Round, VS

0.53ct Purple Spinel, Round, VS

4.8 mm

$ 27.80

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0.97ct Pink Morganite, Pear Shape, VVS-VS

0.97ct Pink Morganite, Pear Shape, VVS-VS

10 x 5.1 mm

$ 58.46

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7.02ctw Black Spinel, Round, Opaque

7.02ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 30.77

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5.05ctw White Topaz, Square, VVS-VS

5.05ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 40.67

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13.93ctw Black Spinel, Round, Opaque

13.93ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 45.78

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0.14ct Brown Color-Change Sapphire, Pear Shape, VS-SI

0.14ct Brown Color-Change Sapphire, Pear Shape, VS-SI

3.3 x 2.5 mm

$ 11.62

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10.38ct Blue Aquamarine, Emerald Cut, VVS
Aquamarine Product Video (467811)

10.38ct Blue Aquamarine, Emerald Cut, VVS

21.9 x 8.4 mm

$ 1,705.85

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1.18ct Pink Morganite, Round, VS

1.18ct Pink Morganite, Round, VS

7 mm (calibrated)

$ 64.64

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1.63ct White Topaz, Marquise, VVS-VS

1.63ct White Topaz, Marquise, VVS-VS

12 x 5 mm

$ 9.47

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0.69ct Pink Morganite, Pear Shape, VS

0.69ct Pink Morganite, Pear Shape, VS

7.1 x 5.4 mm

$ 30.93

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2.02ct Pink Spinel, Oval, VS
Spinel Product Video (752649)

2.02ct Pink Spinel, Oval, VS

7 x 6.1 mm

$ 2,514.90

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1.02ct Orange Morganite, Oval, VS

1.02ct Orange Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 61.46

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0.34ct Pink Morganite, Round, VS

0.34ct Pink Morganite, Round, VS

5 mm (calibrated)

$ 15.24

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2.90ct Yellow Golden Beryl, Oval, VVS-VS

2.90ct Yellow Golden Beryl, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 72.57

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0.07ct Black Diamond, Round, Opaque

0.07ct Black Diamond, Round, Opaque

2.4 mm (calibrated)

$ 33.87

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

Good prices

Posted By TRM in October, 2025
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 -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate

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

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

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