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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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1.54ctw Yellow Citrine, Heart, VVS-VS

1.54ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 10.74

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2.86ctw White Rainbow Moonstone, Square, Transparent/Translucent

2.86ctw White Rainbow Moonstone, Square, Transparent/Translucent

3 x 3 mm (calibrated)

$ 45.28

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77.61ct Green Maw-Sit-Sit, Baguette, Opaque
Maw-Sit-Sit Product Video (474138)

77.61ct Green Maw-Sit-Sit, Baguette, Opaque

23.2 x 16.5 mm

$ 255.08

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20.02ct Brown Tiger'S Eye, Fancy, Opaque

20.02ct Brown Tiger'S Eye, Fancy, Opaque

31.7 x 8.7 mm

$ 10.96

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0.29ct Green Kornerupine, Oval, VVS

0.29ct Green Kornerupine, Oval, VVS

4.8 x 3.6 mm

$ 24.84

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3.95ct Multicolor Labradorite, Marquise, Translucent

3.95ct Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 8.73

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1.58ct Orange Hessonite Garnet, Cushion, VS

1.58ct Orange Hessonite Garnet, Cushion, VS

6 x 6 mm (calibrated)

$ 24.14

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4.18ct Red Rhodolite Garnet, Oval, VS

4.18ct Red Rhodolite Garnet, Oval, VS

10.1 x 8.5 mm

$ 173.47

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26.17ct Multicolor Agate, Oval, Opaque

26.17ct Multicolor Agate, Oval, Opaque

20 x 15 mm (calibrated)

$ 44.31

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7.55ct Brown Hessonite Garnet, Oval, Translucent

7.55ct Brown Hessonite Garnet, Oval, Translucent

12.9 x 10 mm

$ 41.37

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2.15ctw Gray Sillimanite Cat'S Eye, Oval, Transparent

2.15ctw Gray Sillimanite Cat'S Eye, Oval, Transparent

7 x 5 mm (calibrated)

$ 6.78

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1.80ct Brown Sillimanite Cat'S Eye, Oval, Translucent

1.80ct Brown Sillimanite Cat'S Eye, Oval, Translucent

7.2 x 5.4 mm

$ 5.92

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1.58ct Orange Hessonite Garnet, Cushion, VS-SI

1.58ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 31.47

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12.01ct Purple Ruby-Zoisite, Flower Cut, Opaque

12.01ct Purple Ruby-Zoisite, Flower Cut, Opaque

23.6 x 14.4 mm

$ 14.59

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2.81ct Yellow Citrine, Oval, Transparent

2.81ct Yellow Citrine, Oval, Transparent

10 x 8 mm (calibrated)

$ 21.56

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16.40ctw White Dendritic Agate, Pear Shape, Opaque

16.40ctw White Dendritic Agate, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 13.06

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36.81ct Violet Amethyst, Oval, VVS
Amethyst Product Video (734684)

36.81ct Violet Amethyst, Oval, VVS

25 x 17.3 mm

$ 244.42

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16.11ct Gray Jadeite, Oval, Translucent

16.11ct Gray Jadeite, Oval, Translucent

22 x 13 mm

$ 52.95

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25.41ct Multicolor Jasper, Oval, Opaque

25.41ct Multicolor Jasper, Oval, Opaque

29.1 x 16.6 mm

$ 29.23

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1.60ct Yellow Citrine, Baguette, VVS-VS

1.60ct Yellow Citrine, Baguette, VVS-VS

9.8 x 5.3 mm

$ 12.27

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2.86ct Yellow Citrine, Oval, VVS-VS

2.86ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 15.67

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11.85ct Multicolor Agate, Round, Opaque

11.85ct Multicolor Agate, Round, Opaque

13 mm (calibrated)

$ 11.80

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25.96ct Brown Tiger'S Eye, Fancy, Opaque

25.96ct Brown Tiger'S Eye, Fancy, Opaque

37.5 x 9.5 mm

$ 7.76

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1.86ct Yellow Citrine, Round, VS

1.86ct Yellow Citrine, Round, VS

8 mm (calibrated)

$ 14.82

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 -> 7 star ratings

Overall the site is good to use and simple to navigate for what i needed and i liked that they are clear and detailed on the size shape and cut of the stones only input id like is for stones that have a specific refractive quality like moonstone in my case if theyd showcase the cut stones refraction so you know how it looks when buying

Posted By Revenant in August, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 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 -> 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
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