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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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2.43ct Green Tourmaline, Fancy, Translucent
Tourmaline Product Video (474710)

2.43ct Green Tourmaline, Fancy, Translucent

11.4 x 7.1 mm

$ 26.63

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16.98ct Multicolor Jasper, Oval, Opaque

16.98ct Multicolor Jasper, Oval, Opaque

31.2 x 20 mm

$ 13.95

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2.82ctw Pink Strawberry Quartz, Oval, Translucent

2.82ctw Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 17.45

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5.34ct Pink Rose Quartz, Emerald Cut, Transparent

5.34ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 29.25

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0.51ct Red Pyrope Garnet, Heart, VVS-VS

0.51ct Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 12.70

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2.34ctw Yellow Golden Beryl, Oval, VS

2.34ctw Yellow Golden Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 58.27

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1.04ctw Green Peridot, Marquise, VVS-VS

1.04ctw Green Peridot, Marquise, VVS-VS

8.1 x 4 mm

$ 9.11

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4.41ct Pink Rose Quartz, Emerald Cut, Transparent

4.41ct Pink Rose Quartz, Emerald Cut, Transparent

9.5 x 9.5 mm

$ 24.16

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2.65ctw White Rainbow Moonstone, Square, Transparent
Rainbow Moonstone Product Video (312018)

2.65ctw White Rainbow Moonstone, Square, Transparent

3 x 3 mm (calibrated)

$ 37.39

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1.20ct Blue Kyanite, Oval, VS-SI

1.20ct Blue Kyanite, Oval, VS-SI

7 x 5 mm (calibrated)

$ 26.29

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0.92ctw Green Peridot, Pear Shape, VVS-VS

0.92ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 8.07

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10.04ct Brown Tiger'S Eye, Oval, Opaque

10.04ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 5.89

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1.13ctw White Rainbow Moonstone, Oval, Transparent

1.13ctw White Rainbow Moonstone, Oval, Transparent

7 x 5 mm (calibrated)

$ 19.13

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0.80ct Orange Zircon, Oval, VVS

0.80ct Orange Zircon, Oval, VVS

6 x 4 mm (calibrated)

$ 11.95

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0.80ct Orange Sphalerite, Round, SI

0.80ct Orange Sphalerite, Round, SI

5.5 mm (calibrated)

$ 39.84

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4.79ctw Yellow Citrine, Pear Shape, VS

4.79ctw Yellow Citrine, Pear Shape, VS

8 x 5 mm (calibrated)

$ 26.24

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1.24ct Multicolor Opal, Oval, Transparent

1.24ct Multicolor Opal, Oval, Transparent

9 x 7 mm (calibrated)

$ 35.46

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18.15ctw Multicolor Labradorite, Pear Shape, Translucent

18.15ctw Multicolor Labradorite, Pear Shape, Translucent

20 x 15 mm (calibrated)

$ 39.77

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14.10ctw Black Spinel, Round, Opaque

14.10ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 43.87

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62.57ct Multicolor Jasper, Cushion, Opaque

62.57ct Multicolor Jasper, Cushion, Opaque

33.9 x 21.8 mm

$ 39.08

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5.04ct Pink Strawberry Quartz, Oval, Translucent

5.04ct Pink Strawberry Quartz, Oval, Translucent

11 x 9 mm (calibrated)

$ 38.65

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6.05ct Brown Tiger'S Eye, Baguette, Opaque

6.05ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 6.03

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17.93ct Violet Amethyst, Flower Cut, Transparent/Translucent

17.93ct Violet Amethyst, Flower Cut, Transparent/Translucent

17.3 x 17.2 mm

$ 53.58

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3.25ctw Orange Zircon, Emerald Cut, VS

3.25ctw Orange Zircon, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 53.42

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 -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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