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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

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For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
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Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
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Red Natural Untreated Gemstones
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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1.86Ct Cognac Diamond, Cushion, Si
Diamond Product Video (382047)

1.86Ct Cognac Diamond, Cushion, Si

6.6 x 6.5 mm

$ 4,187.41

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1.81Ct Deep Cognac Diamond, Pear Shape, Vs
Diamond Product Video (460449)

1.81Ct Deep Cognac Diamond, Pear Shape, Vs

8.8 x 6.6 mm

$ 4,013.86

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3.41Ctw White Topaz, Marquise, Vs

3.41Ctw White Topaz, Marquise, Vs

11.9 x 5.1 mm

$ 22.51

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0.07Ct Black Diamond, Round, Opaque

0.07Ct Black Diamond, Round, Opaque

2.4 mm (calibrated)

$ 40.81

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0.91Ct Light Orange Morganite, Oval, Vs

0.91Ct Light Orange Morganite, Oval, Vs

7.9 x 5.7 mm

$ 49.14

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1.53Ctw Multicolor Andalusite, Oval, Vs

1.53Ctw Multicolor Andalusite, Oval, Vs

5.1 x 3.2 mm

$ 98.47

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8.18Ct Medium Pink Morganite, Pear Shape, Translucent

8.18Ct Medium Pink Morganite, Pear Shape, Translucent

17.9 x 10.2 mm

$ 40.90

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0.90Ct Bumblebee Yellow Beryl, Trillion, Vvs

0.90Ct Bumblebee Yellow Beryl, Trillion, Vvs

7 x 7 mm (calibrated)

$ 21.60

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1.64Ct White Topaz, Marquise, Vs

1.64Ct White Topaz, Marquise, Vs

11.7 x 4.9 mm

$ 10.82

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3.67Ct Flamingo Pink Morganite, Pear Shape, Transparent

3.67Ct Flamingo Pink Morganite, Pear Shape, Transparent

13.1 x 8.1 mm

$ 18.35

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0.42Ct Very Light Pink Morganite, Round, Vs-Si

0.42Ct Very Light Pink Morganite, Round, Vs-Si

5 mm (calibrated)

$ 21.00

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1.45Ct Very Light Pink Morganite, Round, Vs

1.45Ct Very Light Pink Morganite, Round, Vs

7.5 mm (calibrated)

$ 67.86

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3.12Ctw Clear White Topaz, Cushion, Vvs-Vs

3.12Ctw Clear White Topaz, Cushion, Vvs-Vs

4.6 x 4.6 mm

$ 20.59

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0.80Ct Warm Yellow Beryl, Trillion, Vvs

0.80Ct Warm Yellow Beryl, Trillion, Vvs

7 x 7 mm (calibrated)

$ 19.20

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0.71Ct Medium Pink Spinel, Cushion, Vvs-Vs

0.71Ct Medium Pink Spinel, Cushion, Vvs-Vs

5.6 x 4.7 mm

$ 59.64

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1.10Ct Light Pink Morganite, Round, Vs

1.10Ct Light Pink Morganite, Round, Vs

7 mm (calibrated)

$ 101.64

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0.38Ct Salmon Pink Morganite, Oval, Vs

0.38Ct Salmon Pink Morganite, Oval, Vs

6 x 4 mm (calibrated)

$ 20.52

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1.24Ct Medium Yellow Chrysoberyl, Oval, Vvs-Vs

1.24Ct Medium Yellow Chrysoberyl, Oval, Vvs-Vs

6.9 x 5.3 mm

$ 174.20

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1.49Ct Light Yellow Beryl, Cushion, Vvs

1.49Ct Light Yellow Beryl, Cushion, Vvs

9 x 7 mm (calibrated)

$ 39.34

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13.94Ctw Black Spinel, Heart, Opaque

13.94Ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 92.00

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1.22Ct Very Light Grape Purple Spinel, Cushion, Vs
Spinel Product Video (546202)

1.22Ct Very Light Grape Purple Spinel, Cushion, Vs

6 x 6 mm (calibrated)

$ 87.17

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3.79Ctw White Topaz, Square, Vs-Si

3.79Ctw White Topaz, Square, Vs-Si

3.5 x 3.5 mm

$ 35.02

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0.03Ct Black Diamond, Round, Opaque

0.03Ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 28.80

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1.72Ctw Multicolor Andalusite, Oval, Vs
Andalusite Product Video (390559)

1.72Ctw Multicolor Andalusite, Oval, Vs

5 x 3 mm (calibrated)

$ 110.71

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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 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 -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.

Posted By Darkstar in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was a good experience looking for and finding a nice amethyst stone

Posted By N/a in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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