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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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3.45ct Yellow Citrine, Oval, VVS-VS

3.45ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 24.05

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3.23ct Violet Amethyst, Trillion, VVS-VS

3.23ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 25.74

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2.06ctw Multicolor Andalusite, Oval, VS

2.06ctw Multicolor Andalusite, Oval, VS

5.2 x 4.2 mm

$ 110.46

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2.11ct Orange Hessonite Garnet, Cushion, VVS-VS

2.11ct Orange Hessonite Garnet, Cushion, VVS-VS

9.8 x 6.3 mm

$ 42.03

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2.70ctw Red Rhodolite Garnet, Square, VS

2.70ctw Red Rhodolite Garnet, Square, VS

4.9 x 4.8 mm

$ 23.64

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11.75ct Green Prehnite, Fancy, Translucent

11.75ct Green Prehnite, Fancy, Translucent

16.8 x 12.4 mm

$ 19.31

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8.12ct Yellow Rutile Quartz, Oval, Translucent

8.12ct Yellow Rutile Quartz, Oval, Translucent

15.1 x 11 mm

$ 22.24

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0.25ct Orange Spessartite Garnet, Oval, VS-SI

0.25ct Orange Spessartite Garnet, Oval, VS-SI

4.2 x 3.5 mm

$ 8.47

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0.72ct Yellow Tourmaline, Oval, Transparent

0.72ct Yellow Tourmaline, Oval, Transparent

6.3 x 4.6 mm

$ 14.34

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0.60ct Orange Zircon, Oval, VS

0.60ct Orange Zircon, Oval, VS

5.2 x 4 mm

$ 14.94

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3.25ct White Topaz, Oval, VVS-VS

3.25ct White Topaz, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 17.81

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9.01ct Green Amazonite, Marquise, Opaque
Amazonite Product Video (491282)

9.01ct Green Amazonite, Marquise, Opaque

20.1 x 10.2 mm

$ 22.01

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0.47ct Yellow Spessartite Garnet, Oval, VS

0.47ct Yellow Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 14.04

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33.47ct Multicolor Psilomelane Dendrite, Oval, Opaque

33.47ct Multicolor Psilomelane Dendrite, Oval, Opaque

33.6 x 20 mm

$ 27.00

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1.36ct Blue Aquamarine, Oval, VS

1.36ct Blue Aquamarine, Oval, VS

8 x 6 mm (calibrated)

$ 136.00

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2.90ct Multicolor Labradorite, Baguette, Translucent

2.90ct Multicolor Labradorite, Baguette, Translucent

9 x 7 mm (calibrated)

$ 3.98

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18.62ct Multicolor Opal, Oval, Opaque
Opal Product Video (752472)

18.62ct Multicolor Opal, Oval, Opaque

26.2 x 16.6 mm

$ 463.64

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11.40ct Brown Smoky Quartz, Round, VVS

11.40ct Brown Smoky Quartz, Round, VVS

16 mm (calibrated)

$ 21.23

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6.79ct Green Amazonite, Marquise, Opaque

6.79ct Green Amazonite, Marquise, Opaque

19.7 x 10 mm

$ 16.29

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27.96ctw Multicolor Jasper, Oval, Opaque

27.96ctw Multicolor Jasper, Oval, Opaque

26.5 x 15.4 mm

$ 16.43

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9.69ctw Multicolor Pietersite, Round, Opaque

9.69ctw Multicolor Pietersite, Round, Opaque

14 mm (calibrated)

$ 23.75

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1.96ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.96ct Orange Hessonite Garnet, Emerald Cut, VS-SI

8 x 6 mm (calibrated)

$ 32.73

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1.09ct Green Peridot, Emerald Cut, VS

1.09ct Green Peridot, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 17.37

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19.75ct Brown Tiger'S Eye, Oval, Opaque

19.75ct Brown Tiger'S Eye, Oval, Opaque

25 x 18 mm (calibrated)

$ 21.65

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

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
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Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Maneuvering through the website was easy and enjoyable. I have ordered from GemSelect before and that experience was also pleasant.

Posted By Willow in August, 2026
Source: Bizrate
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