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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
Single
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0.53ct Purple Spinel, Round, VS

0.53ct Purple Spinel, Round, VS

4.8 mm

$ 27.80

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2.10ct Pink Kunzite, Emerald Cut, VVS

2.10ct Pink Kunzite, Emerald Cut, VVS

7 x 7 mm (calibrated)

$ 57.78

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0.95ct Yellow Morganite, Cushion, VS

0.95ct Yellow Morganite, Cushion, VS

6 x 6 mm (calibrated)

$ 57.25

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0.43ct Orange Citrine, Marquise, VS

0.43ct Orange Citrine, Marquise, VS

8 x 4 mm (calibrated)

$ 3.21

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9.08ct Violet Amethyst, Pear Shape, Transparent

9.08ct Violet Amethyst, Pear Shape, Transparent

16.8 x 12.7 mm

$ 54.27

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0.08ct Black Diamond, Round, Opaque

0.08ct Black Diamond, Round, Opaque

2.6 mm (calibrated)

$ 38.71

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2.56ct Violet Amethyst, Trillion, VS

2.56ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 17.85

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33.92ct Blue Aventurine, Fancy, Opaque

33.92ct Blue Aventurine, Fancy, Opaque

36.3 x 10.8 mm

$ 10.14

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29.68ct Multicolor Moss Agate, Pear Shape, Transparent

29.68ct Multicolor Moss Agate, Pear Shape, Transparent

31.4 x 25.5 mm

$ 51.14

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1.16ct Orange Hessonite Garnet, Oval, VS

1.16ct Orange Hessonite Garnet, Oval, VS

7.3 x 5.5 mm

$ 20.25

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2.18ctw Yellow Sphene, Oval, Transparent

2.18ctw Yellow Sphene, Oval, Transparent

6.3 x 5.8 mm

$ 10.86

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28.81ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

28.81ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

27.4 x 18.2 mm

$ 28.69

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24.96ctw Multicolor Fossil Coral, Oval, Opaque

24.96ctw Multicolor Fossil Coral, Oval, Opaque

20.8 x 13.3 mm

$ 26.80

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52.94ct Multicolor Psilomelane Dendrite, Oval, Opaque

52.94ct Multicolor Psilomelane Dendrite, Oval, Opaque

36.5 x 23.1 mm

$ 42.71

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9.51ctw Black Spinel, Round, Opaque

9.51ctw Black Spinel, Round, Opaque

10 mm (calibrated)

$ 36.46

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1.92ct Pink Strawberry Quartz, Oval, Translucent

1.92ct Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 9.60

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1.91ct Orange Hessonite Garnet, Oval, VVS-VS

1.91ct Orange Hessonite Garnet, Oval, VVS-VS

8.1 x 6.8 mm

$ 29.18

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1.33ct Orange Sphalerite, Square, SI

1.33ct Orange Sphalerite, Square, SI

5.6 x 5.6 mm

$ 79.48

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1.54ct Yellow Citrine, Round, VVS-VS

1.54ct Yellow Citrine, Round, VVS-VS

7.5 mm (calibrated)

$ 12.27

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0.40ct Blue Kyanite, Round, VS-SI

0.40ct Blue Kyanite, Round, VS-SI

4 mm (calibrated)

$ 9.96

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19.46ct Gray Hematite, Marquise, Opaque

19.46ct Gray Hematite, Marquise, Opaque

23.9 x 11.4 mm

$ 18.97

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1.33ctw Red Pyrope Garnet, Square, VS

1.33ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 10.20

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3.82ctw Red Pyrope Garnet, Square, VS

3.82ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 29.29

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18.49ct White Agate, Pear Shape, Opaque

18.49ct White Agate, Pear Shape, Opaque

21.8 x 19.2 mm

$ 29.28

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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!

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Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
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Over pretty well experience the your website no complaints about it very easy reliable service provided

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I think therea's no problem

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Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
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Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
Source: Bizrate
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