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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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1.81ct Green Tourmaline, Oval, VVS-VS

1.81ct Green Tourmaline, Oval, VVS-VS

8.2 x 7.1 mm

$ 210.32

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3.69ct Violet Amethyst, Oval, Transparent
Amethyst Product Video (642151)

3.69ct Violet Amethyst, Oval, Transparent

10 x 8 mm (calibrated)

$ 22.05

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0.53ct Green Cat'S Eye Alexandrite, Oval, Opaque

0.53ct Green Cat'S Eye Alexandrite, Oval, Opaque

5.2 x 3.6 mm

$ 87.98

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0.87ctw Green Peridot, Pear Shape, VVS-VS

0.87ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.63

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2.28ctw Red Pyrope Garnet, Square, VS

2.28ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 17.49

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33.27ct Multicolor Jasper, Oval, Opaque

33.27ct Multicolor Jasper, Oval, Opaque

27 x 20 mm (calibrated)

$ 18.88

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4.66ctw Orange Hessonite Garnet, Emerald Cut, VS

4.66ctw Orange Hessonite Garnet, Emerald Cut, VS

7.6 x 5.7 mm

$ 70.62

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3.59ct Violet Amethyst, Pear Shape, VS

3.59ct Violet Amethyst, Pear Shape, VS

13 x 9 mm (calibrated)

$ 27.53

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30.35ct Multicolor Jasper, Cushion, Opaque

30.35ct Multicolor Jasper, Cushion, Opaque

20.8 x 19.5 mm

$ 17.23

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0.03ct Black Diamond, Round, Opaque

0.03ct Black Diamond, Round, Opaque

2.1 mm (calibrated)

$ 10.27

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2.31ctw Multicolor Labradorite, Round, Translucent

2.31ctw Multicolor Labradorite, Round, Translucent

6 mm (calibrated)

$ 4.97

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2.19ct Orange Hessonite Garnet, Cushion, VS-SI

2.19ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 37.31

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1.43ctw Red Pyrope Garnet, Square, VVS

1.43ctw Red Pyrope Garnet, Square, VVS

5 x 5 mm (calibrated)

$ 10.96

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36.61ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

36.61ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

15.8 mm

$ 80.22

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32.06ct Green Amazonite, Fancy, Opaque

32.06ct Green Amazonite, Fancy, Opaque

40.5 x 10.5 mm

$ 6.38

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0.60ct Orange Zircon, Oval, VVS

0.60ct Orange Zircon, Oval, VVS

5 x 4 mm (calibrated)

$ 8.96

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8.37ctw Pink Strawberry Quartz, Oval, Transparent

8.37ctw Pink Strawberry Quartz, Oval, Transparent

12 x 10 mm (calibrated)

$ 128.38

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0.67ct Yellow Grossularite Garnet, Round, VS

0.67ct Yellow Grossularite Garnet, Round, VS

5 mm (calibrated)

$ 15.08

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0.72ct Orange Citrine, Oval, VVS-VS

0.72ct Orange Citrine, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 7.17

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1.17ct Green Tourmaline, Emerald Cut, VS

1.17ct Green Tourmaline, Emerald Cut, VS

13.3 x 3.6 mm

$ 24.74

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4.26ct Pink Morganite, Pear Shape, Transparent

4.26ct Pink Morganite, Pear Shape, Transparent

16 x 8 mm (calibrated)

$ 46.67

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4.70ct Yellow Citrine, Briolette, VVS-VS

4.70ct Yellow Citrine, Briolette, VVS-VS

12.9 x 8.1 mm

$ 26.31

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4.75ct Green Jade, Oval, Opaque

4.75ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 9.46

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12.52ct Multicolor Labradorite, Pear Shape, Translucent

12.52ct Multicolor Labradorite, Pear Shape, Translucent

18 x 13 mm (calibrated)

$ 27.68

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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 -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The process was pleasant, I chose to purchase the stone traditional to the month of March as it is the month in which I was born.

Posted By Maharishi in June, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I've made several purchases over the last 8 years and I've never been less than happy with any of them.

Posted By Jess in July, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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