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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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12.34ct Brown Smoky Quartz, Emerald Cut, VS

12.34ct Brown Smoky Quartz, Emerald Cut, VS

14 x 14 mm (calibrated)

$ 33.81

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12.53ct Multicolor Labradorite, Oval, Translucent

12.53ct Multicolor Labradorite, Oval, Translucent

18 x 13 mm (calibrated)

$ 27.71

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0.88ct Green Tourmaline, Emerald Cut, VVS-VS

0.88ct Green Tourmaline, Emerald Cut, VVS-VS

7.7 x 4.1 mm

$ 43.82

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0.40ct Pink Morganite, Round, VS

0.40ct Pink Morganite, Round, VS

5 mm (calibrated)

$ 17.93

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0.84ctw Green Peridot, Pear Shape, VVS-VS

0.84ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.36

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2.51ctw Red Pyrope Garnet, Marquise, VVS-VS

2.51ctw Red Pyrope Garnet, Marquise, VVS-VS

10.2 x 5.2 mm

$ 22.00

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10.66ctw Brown Moonstone, Flower Cut, Translucent
Moonstone Product Video (485276)

10.66ctw Brown Moonstone, Flower Cut, Translucent

13 x 13 mm (calibrated)

$ 46.71

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1.13ct Yellow Beryl, Cushion, VS

1.13ct Yellow Beryl, Cushion, VS

8 x 6 mm (calibrated)

$ 27.01

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13.90ct Brown Smoky Quartz, Round, VVS-VS

13.90ct Brown Smoky Quartz, Round, VVS-VS

17 mm (calibrated)

$ 16.90

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1.75ct Green Sphene, Oval, Transparent

1.75ct Green Sphene, Oval, Transparent

7.5 x 6.1 mm

$ 8.72

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2.32ct Red Almandine Garnet, Oval, VVS-VS

2.32ct Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 86.65

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18.30ct Violet Amethyst, Cushion, VVS-VS

18.30ct Violet Amethyst, Cushion, VVS-VS

20 x 15 mm (calibrated)

$ 127.59

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1.32ct Yellow Beryl, Trillion, VVS

1.32ct Yellow Beryl, Trillion, VVS

8 x 7.6 mm

$ 26.29

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8.30ct Multicolor Quartz With Marcasite, Pear Shape, Transparent

8.30ct Multicolor Quartz With Marcasite, Pear Shape, Transparent

18 x 13 mm (calibrated)

$ 53.10

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4.73ct Pink Rose Quartz, Emerald Cut, Transparent

4.73ct Pink Rose Quartz, Emerald Cut, Transparent

10 x 10 mm (calibrated)

$ 23.56

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9.90ct White Rose Quartz, Flower Cut, Transparent

9.90ct White Rose Quartz, Flower Cut, Transparent

19 x 18.9 mm

$ 21.70

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3.98ctw Red Pyrope Garnet, Marquise, VVS-VS

3.98ctw Red Pyrope Garnet, Marquise, VVS-VS

12 x 6 mm

$ 34.88

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17.31ctw Multicolor Labradorite, Round, Translucent

17.31ctw Multicolor Labradorite, Round, Translucent

16 mm (calibrated)

$ 37.93

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1.30ct Pink Morganite, Pear Shape, VVS-VS

1.30ct Pink Morganite, Pear Shape, VVS-VS

10.7 x 5.7 mm

$ 99.70

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1.75ct Brown Smoky Quartz, Pear Shape, VVS

1.75ct Brown Smoky Quartz, Pear Shape, VVS

15.2 x 5.1 mm

$ 8.72

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1.06ct Yellow Citrine, Trillion, VS

1.06ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 6.62

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1.18ct White Rainbow Moonstone, Oval, Translucent

1.18ct White Rainbow Moonstone, Oval, Translucent

6.9 x 5.9 mm

$ 23.12

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16.18ct Multicolor Jasper, Marquise, Opaque

16.18ct Multicolor Jasper, Marquise, Opaque

31.4 x 13.8 mm

$ 28.19

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17.22ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

17.22ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

19.2 x 13.4 mm

$ 7.89

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 -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was all good

Posted By Debsarabs in February, 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 -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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