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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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1.76ct Green Tourmaline, Round, Transparent

1.76ct Green Tourmaline, Round, Transparent

7 mm (calibrated)

$ 29.17

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7.04ct Violet Chalcedony, Cushion, Translucent

7.04ct Violet Chalcedony, Cushion, Translucent

12 x 12 mm (calibrated)

$ 26.29

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8.00ct Multicolor Agate, Fancy, Opaque

8.00ct Multicolor Agate, Fancy, Opaque

10.4 x 10 mm

$ 7.57

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0.64ct Orange Zircon, Oval, VVS

0.64ct Orange Zircon, Oval, VVS

5.2 x 4.1 mm

$ 9.56

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1.10ctw Orange Zircon, Oval, VVS-VS

1.10ctw Orange Zircon, Oval, VVS-VS

5.1 x 4.2 mm

$ 27.39

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1.37ct Orange Hessonite Garnet, Cushion, VS-SI

1.37ct Orange Hessonite Garnet, Cushion, VS-SI

6 x 6 mm (calibrated)

$ 21.43

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1.57ct Yellow Tourmaline, Oval, Transparent

1.57ct Yellow Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 26.91

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1.38ct Yellow Citrine, Oval, VVS

1.38ct Yellow Citrine, Oval, VVS

9 x 7 mm (calibrated)

$ 9.62

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2.92ctw Red Pyrope Garnet, Square, VVS-VS

2.92ctw Red Pyrope Garnet, Square, VVS-VS

6 x 6 mm (calibrated)

$ 22.39

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1.96ct Yellow Citrine, Round, VVS

1.96ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 13.66

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5.33ct Violet Amethyst, Pear Shape, VVS

5.33ct Violet Amethyst, Pear Shape, VVS

15.5 x 10.9 mm

$ 37.16

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2.79ctw Yellow Golden Beryl, Oval, VS

2.79ctw Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 61.14

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6.07ct Multicolor Agate, Oval, Opaque

6.07ct Multicolor Agate, Oval, Opaque

12 x 10 mm (calibrated)

$ 5.74

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14.92ct Violet Amethyst, Emerald Cut, VS

14.92ct Violet Amethyst, Emerald Cut, VS

18 x 13 mm (calibrated)

$ 104.02

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7.90ct Multicolor Rainbow Pyrite, Marquise, Opaque

7.90ct Multicolor Rainbow Pyrite, Marquise, Opaque

22.8 x 8.7 mm

$ 20.46

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7.02ctw Black Spinel, Round, Opaque

7.02ctw Black Spinel, Round, Opaque

9 mm (calibrated)

$ 30.77

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23.80ct Yellow Obsidian, Oval, Opaque

23.80ct Yellow Obsidian, Oval, Opaque

34 x 25.4 mm

$ 18.97

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18.89ct Multicolor Jasper, Fancy, Opaque

18.89ct Multicolor Jasper, Fancy, Opaque

32.7 x 8.4 mm

$ 11.39

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10.31ct Multicolor Ruby In Fuchsite, Marquise, Translucent
Ruby in Fuchsite Product Video (385073)

10.31ct Multicolor Ruby In Fuchsite, Marquise, Translucent

22.4 x 12.2 mm

$ 77.15

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1.10ct Purple Spinel, Cushion, VS

1.10ct Purple Spinel, Cushion, VS

6.1 x 5.7 mm

$ 184.26

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1.40ct Yellow Tourmaline, Round, Transparent

1.40ct Yellow Tourmaline, Round, Transparent

7 mm (calibrated)

$ 24.00

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29.35ct Black Feather Pyrite, Oval, Opaque

29.35ct Black Feather Pyrite, Oval, Opaque

28 x 20 mm

$ 22.90

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4.01ctw Red Pyrope Garnet, Marquise, VVS-VS

4.01ctw Red Pyrope Garnet, Marquise, VVS-VS

12 x 5.9 mm

$ 44.06

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1.64ct White Opal, Pear Shape, Transparent

1.64ct White Opal, Pear Shape, Transparent

12.7 x 7.8 mm

$ 41.24

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

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future

Posted By Liz in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It was all good

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

hassle free experience.

Posted By Jhidron in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate
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