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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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3.04ctw Yellow Citrine, Round, VVS-VS

3.04ctw Yellow Citrine, Round, VVS-VS

8 mm (calibrated)

$ 24.22

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33.11ctw Multicolor Fossil Coral, Oval, Opaque

33.11ctw Multicolor Fossil Coral, Oval, Opaque

21.4 x 16.3 mm

$ 65.30

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5.08ct Yellow Citrine, Oval, VVS-VS
Citrine Product Video (492912)

5.08ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 30.49

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1.01ctw Green Peridot, Marquise, VS

1.01ctw Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 15.09

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0.96ct Yellow Citrine, Trillion, VVS-VS

0.96ct Yellow Citrine, Trillion, VVS-VS

7 x 7 mm (calibrated)

$ 6.32

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5.93ct Pink Rose Quartz, Emerald Cut, Transparent

5.93ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 32.49

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14.04ct Multicolor Agate, Round, Opaque

14.04ct Multicolor Agate, Round, Opaque

13 mm (calibrated)

$ 11.19

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3.66ct Yellow Citrine, Oval, VVS

3.66ct Yellow Citrine, Oval, VVS

12 x 8 mm (calibrated)

$ 32.94

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0.92ct Yellow Beryl, Oval, VVS-VS

0.92ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 18.33

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2.28ct Yellow Citrine, Oval, VVS

2.28ct Yellow Citrine, Oval, VVS

13.9 x 6.8 mm

$ 15.89

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4.47ctw Red Pyrope Garnet, Marquise, VVS-VS

4.47ctw Red Pyrope Garnet, Marquise, VVS-VS

12.2 x 6.1 mm

$ 34.28

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12.95ct Multicolor Fossil Coral, Oval, Opaque

12.95ct Multicolor Fossil Coral, Oval, Opaque

18.9 x 12.8 mm

$ 25.54

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18.09ct Multicolor Jasper, Square, Opaque

18.09ct Multicolor Jasper, Square, Opaque

18.6 x 16.6 mm

$ 11.30

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1.73ct Yellow Beryl, Oval, VVS-VS

1.73ct Yellow Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 34.46

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5.66ct Pink Morganite, Pear Shape, Transparent

5.66ct Pink Morganite, Pear Shape, Transparent

15 x 10 mm (calibrated)

$ 56.37

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1.92ct Orange Moonstone, Cushion, Translucent

1.92ct Orange Moonstone, Cushion, Translucent

7.3 x 7.2 mm

$ 3.84

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1.98ct Orange Hessonite Garnet, Cushion, VS

1.98ct Orange Hessonite Garnet, Cushion, VS

7 x 7 mm (calibrated)

$ 37.38

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1.18ct Orange Hessonite Garnet, Oval, VS

1.18ct Orange Hessonite Garnet, Oval, VS

7.1 x 5.6 mm

$ 23.51

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3.98ct Blue Kyanite, Oval, SI

3.98ct Blue Kyanite, Oval, SI

10 x 8 mm (calibrated)

$ 99.10

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2.03ct Multicolor Boulder Opal, Fancy, Opaque
Boulder Opal Product Video (744813)

2.03ct Multicolor Boulder Opal, Fancy, Opaque

9.3 x 7.2 mm

$ 10.15

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0.80ct Green Tourmaline, Emerald Cut, VVS

0.80ct Green Tourmaline, Emerald Cut, VVS

5 x 4.6 mm

$ 33.20

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3.45ctw White Rainbow Moonstone, Square, Transparent

3.45ctw White Rainbow Moonstone, Square, Transparent

3.2 x 3.2 mm

$ 49.53

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0.96ct Green Tourmaline, Baguette, VVS-VS

0.96ct Green Tourmaline, Baguette, VVS-VS

9.9 x 3.3 mm

$ 33.47

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19.83ct Multicolor Boulder Opal, Trillion, Opaque

19.83ct Multicolor Boulder Opal, Trillion, Opaque

22.8 x 21.2 mm

$ 65.18

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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

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have made many purchases from GemSelect over the years, and I have a beautiful collection of jewelry as a result. My purchases have always been exactly as described, and I have enjoyed doing business with you.

Posted By MMM in July, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

hassle free experience.

Posted By Jhidron in October, 2025
Source: Bizrate
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