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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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4.73ct Yellow Citrine, Oval, VS

4.73ct Yellow Citrine, Oval, VS

12 x 10 mm (calibrated)

$ 25.91

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2.01ct Purple Kunzite, Emerald Cut, VS

2.01ct Purple Kunzite, Emerald Cut, VS

7.4 x 5.7 mm

$ 55.32

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1.40ct Green Tourmaline, Round, Transparent

1.40ct Green Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 23.21

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2.09ctw Pink Strawberry Quartz, Oval, Translucent

2.09ctw Pink Strawberry Quartz, Oval, Translucent

7.7 x 5.9 mm

$ 26.43

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37.37ctw Multicolor Fossil Coral, Oval, Opaque

37.37ctw Multicolor Fossil Coral, Oval, Opaque

23.7 x 12.8 mm

$ 40.94

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0.49ct Purple Spinel, Cushion, VS

0.49ct Purple Spinel, Cushion, VS

6.7 x 4.2 mm

$ 34.16

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12.78ctw Violet Amethyst, Oval, Transparent

12.78ctw Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 70.01

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10.29ct Black Tourmaline, Emerald Cut, Opaque

10.29ct Black Tourmaline, Emerald Cut, Opaque

14.4 x 10.6 mm

$ 51.24

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0.49ct Orange Spessartite Garnet, Oval, VS

0.49ct Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 14.64

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16.90ct Multicolor Jasper, Oval, Opaque

16.90ct Multicolor Jasper, Oval, Opaque

22.1 x 16.2 mm

$ 37.03

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6.96ct Multicolor Labradorite, Pear Shape, Translucent

6.96ct Multicolor Labradorite, Pear Shape, Translucent

14 x 10 mm (calibrated)

$ 15.39

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24.79ct Violet Amethyst, Round, VVS-VS

24.79ct Violet Amethyst, Round, VVS-VS

20 mm (calibrated)

$ 172.84

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1.38ctw Red Rhodolite Garnet, Square, VS

1.38ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.08

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11.14ctw Multicolor Labradorite, Pear Shape, Translucent

11.14ctw Multicolor Labradorite, Pear Shape, Translucent

16 x 12 mm (calibrated)

$ 24.63

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2.18ct Pink Kunzite, Cushion, VVS

2.18ct Pink Kunzite, Cushion, VVS

6.8 x 6.5 mm

$ 59.99

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2.74ct Yellow Citrine, Oval, VVS

2.74ct Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 15.01

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0.64ct Blue Kyanite, Round, VS-SI

0.64ct Blue Kyanite, Round, VS-SI

5 mm (calibrated)

$ 12.75

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23.78ct Brown Moonstone, Oval, Opaque

23.78ct Brown Moonstone, Oval, Opaque

22.2 x 16 mm

$ 52.11

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0.57ct Green Peridot, Oval, VS

0.57ct Green Peridot, Oval, VS

6 x 4 mm (calibrated)

$ 10.22

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3.31ct Green Apatite, Emerald Cut, VS

3.31ct Green Apatite, Emerald Cut, VS

9 x 9 mm (calibrated)

$ 170.45

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5.51ct Black Star Diopside, Oval, Opaque

5.51ct Black Star Diopside, Oval, Opaque

11 x 9 mm (calibrated)

$ 27.44

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5.62ct Yellow Citrine, Emerald Cut, VVS

5.62ct Yellow Citrine, Emerald Cut, VVS

13 x 9 mm (calibrated)

$ 50.58

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6.82ct Yellow Citrine, Emerald Cut, VVS

6.82ct Yellow Citrine, Emerald Cut, VVS

14 x 10 mm (calibrated)

$ 52.30

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5.66ct Turquoise Aquamarine, Pear Shape, Translucent

5.66ct Turquoise Aquamarine, Pear Shape, Translucent

15.7 x 10.4 mm

$ 117.45

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

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate
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