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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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4.13ct Pink Strawberry Quartz, Oval, Translucent

4.13ct Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 49.36

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3.86ct Yellow Citrine, Oval, VVS-VS

3.86ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 30.74

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13.00ctw Green Prehnite, Fancy, Translucent

13.00ctw Green Prehnite, Fancy, Translucent

16.2 x 11.2 mm

$ 21.36

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1.37ctw Yellow Citrine, Trillion, VS

1.37ctw Yellow Citrine, Trillion, VS

6 x 6 mm (calibrated)

$ 10.91

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1.93ct Pink Kunzite, Cushion, VVS-VS

1.93ct Pink Kunzite, Cushion, VVS-VS

6.8 x 6.1 mm

$ 53.12

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31.17ct Black Sunstone, Cushion, Translucent

31.17ct Black Sunstone, Cushion, Translucent

22.5 x 21.5 mm

$ 56.11

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0.91ct Green Tourmaline, Baguette, VVS-VS

0.91ct Green Tourmaline, Baguette, VVS-VS

8.4 x 4.1 mm

$ 45.32

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13.03ct Violet Amethyst, Cushion, VVS

13.03ct Violet Amethyst, Cushion, VVS

15 x 15 mm (calibrated)

$ 90.84

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1.41ct Orange Hessonite Garnet, Emerald Cut, VS

1.41ct Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 23.17

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10.38ct Green Malachite, Oval, Opaque

10.38ct Green Malachite, Oval, Opaque

14 x 10 mm (calibrated)

$ 8.62

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2.17ct Yellow Citrine, Oval, VVS

2.17ct Yellow Citrine, Oval, VVS

13.6 x 7 mm

$ 15.13

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2.67ct Pink Tourmaline, Emerald Cut, SI

2.67ct Pink Tourmaline, Emerald Cut, SI

8.2 x 7.3 mm

$ 201.84

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5.05ct Pink Kunzite, Pear Shape, VS

5.05ct Pink Kunzite, Pear Shape, VS

13 x 9 mm (calibrated)

$ 138.98

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15.46ct Violet Amethyst, Flower Cut, Translucent

15.46ct Violet Amethyst, Flower Cut, Translucent

16.2 x 15.2 mm

$ 50.81

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2.28ctw Orange Sunstone, Oval, Translucent

2.28ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 13.94

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9.92ct Multicolor Coral, Oval, Translucent

9.92ct Multicolor Coral, Oval, Translucent

16.4 x 13.1 mm

$ 30.98

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1.95ctw Multicolor Opal, Round, Translucent

1.95ctw Multicolor Opal, Round, Translucent

6 mm (calibrated)

$ 74.78

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1.83ct Turquoise Grandidierite, Pear Shape, Translucent

1.83ct Turquoise Grandidierite, Pear Shape, Translucent

10.1 x 6.2 mm

$ 100.25

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1.77ctw Green Peridot, Oval, VS

1.77ctw Green Peridot, Oval, VS

7 x 5 mm (calibrated)

$ 28.20

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1.40ct Purple Rhodolite Garnet, Oval, VS

1.40ct Purple Rhodolite Garnet, Oval, VS

7.6 x 5.9 mm

$ 57.43

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1.42ct Multicolor Opal, Oval, Translucent

1.42ct Multicolor Opal, Oval, Translucent

9 x 7 mm (calibrated)

$ 40.60

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0.92ct Yellow Color-Change Diaspore, Pear Shape, VS

0.92ct Yellow Color-Change Diaspore, Pear Shape, VS

8.6 x 5.7 mm

$ 49.04

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2.64ct Green Tourmaline, Emerald Cut, VVS

2.64ct Green Tourmaline, Emerald Cut, VVS

22.5 x 3.8 mm

$ 86.77

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3.88ct Yellow Citrine, Emerald Cut, VVS-VS

3.88ct Yellow Citrine, Emerald Cut, VVS-VS

12 x 8 mm (calibrated)

$ 34.92

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

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
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

Overall Rating -> 10 star ratings

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
Source: Bizrate
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