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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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1.25ct Purple Spinel, Cushion, VVS-VS

1.25ct Purple Spinel, Cushion, VVS-VS

6.5 x 5.9 mm

$ 82.17

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8.30ct Pink Morganite, Oval, Translucent

8.30ct Pink Morganite, Oval, Translucent

14.7 x 11.2 mm

$ 82.67

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0.14ct Yellow Diamond, Round, VVS-VS
Diamond Product Video (564582)

0.14ct Yellow Diamond, Round, VVS-VS

3.2 mm

$ 212.99

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1.35ct Yellow Beryl, Oval, VVS

1.35ct Yellow Beryl, Oval, VVS

8.8 x 6.6 mm

$ 26.89

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3.06ctw Multicolor Andalusite, Round, VS-SI

3.06ctw Multicolor Andalusite, Round, VS-SI

4 mm (calibrated)

$ 150.86

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0.65ct Yellow Beryl, Oval, VVS-VS

0.65ct Yellow Beryl, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 16.19

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6.12ctw White Topaz, Oval, VVS-VS

6.12ctw White Topaz, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 33.52

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1.04ct Purple Spinel, Cushion, VVS-VS

1.04ct Purple Spinel, Cushion, VVS-VS

6.3 x 5.2 mm

$ 37.19

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1.36ct Purple Spinel, Cushion, VS

1.36ct Purple Spinel, Cushion, VS

6.5 x 5.4 mm

$ 100.13

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1.15ct Yellow Beryl, Oval, VS

1.15ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 28.64

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1.68ct Brown Diamond, Emerald Cut, SI
Diamond Product Video (382055)

1.68ct Brown Diamond, Emerald Cut, SI

7.5 x 5.6 mm

$ 2,853.82

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0.62ct Yellow Beryl, Pear Shape, VS

0.62ct Yellow Beryl, Pear Shape, VS

7.8 x 5 mm

$ 13.59

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2.47ct Pink Morganite, Marquise, Transparent

2.47ct Pink Morganite, Marquise, Transparent

13.9 x 6.1 mm

$ 27.06

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0.71ct Pink Spinel, Cushion, VVS-VS

0.71ct Pink Spinel, Cushion, VVS-VS

5.6 x 4.7 mm

$ 49.50

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1.06ct Green Chrysoberyl, Oval, VVS

1.06ct Green Chrysoberyl, Oval, VVS

6.6 x 5.5 mm

$ 103.00

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14.85ctw Black Spinel, Oval, Opaque

14.85ctw Black Spinel, Oval, Opaque

14 x 10 mm (calibrated)

$ 48.81

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0.04ct Black Diamond, Round, Opaque

0.04ct Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 13.70

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0.35ctw Black Diamond, Square, Opaque
Diamond Product Video (678053)

0.35ctw Black Diamond, Square, Opaque

2.8 x 2.6 mm

$ 174.30

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1.51ct Brown Diamond, Cushion, SI
Diamond Product Video (382116)

1.51ct Brown Diamond, Cushion, SI

6 x 6 mm (calibrated)

$ 3,526.94

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1.24ct Pink Morganite, Round, VS-SI

1.24ct Pink Morganite, Round, VS-SI

7.5 mm (calibrated)

$ 95.10

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4.80ctw White Topaz, Square, VVS-VS

4.80ctw White Topaz, Square, VVS-VS

4.2 x 4.2 mm

$ 38.65

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1.24ct Yellow Beryl, Round, VVS-VS

1.24ct Yellow Beryl, Round, VVS-VS

7 mm (calibrated)

$ 27.17

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0.15ctw White Diamond, Round, VVS-VS

0.15ctw White Diamond, Round, VVS-VS

2.6 mm (calibrated)

$ 268.16

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6.49ctw Black Spinel, Round, Opaque

6.49ctw Black Spinel, Round, Opaque

9.5 mm (calibrated)

$ 24.89

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 -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
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Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
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Overall Rating -> 10 star ratings

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
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Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
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Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate
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