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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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0.03ct White Diamond, Round, VVS

0.03ct White Diamond, Round, VVS

2 mm (calibrated)

$ 68.48

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20.77ct Brown Tiger'S Eye, Oval, Opaque

20.77ct Brown Tiger'S Eye, Oval, Opaque

21.7 x 14.9 mm

$ 22.76

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2.15ct Orange Zircon, Round, VVS

2.15ct Orange Zircon, Round, VVS

7 mm (calibrated)

$ 65.95

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6.07ct Yellow Citrine, Round, VVS

6.07ct Yellow Citrine, Round, VVS

12 mm (calibrated)

$ 46.55

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0.71ct Orange Zircon, Oval, VVS

0.71ct Orange Zircon, Oval, VVS

6 x 4 mm (calibrated)

$ 10.61

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3.69ctw Red Pyrope Garnet, Square, VS

3.69ctw Red Pyrope Garnet, Square, VS

3.9 x 3.8 mm

$ 28.29

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1.23ct Purple Spinel, Oval, VVS-VS

1.23ct Purple Spinel, Oval, VVS-VS

7.3 x 6 mm

$ 141.50

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2.03ct Orange Moonstone, Square, Translucent

2.03ct Orange Moonstone, Square, Translucent

7 x 7 mm (calibrated)

$ 4.07

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0.42ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.42ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5.2 x 3.9 mm

$ 69.72

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47.24ct Pink Rose Quartz, Oval, Transparent

47.24ct Pink Rose Quartz, Oval, Transparent

22.6 x 19.9 mm

$ 69.87

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0.53ct Yellow Color-Change Diaspore, Baguette, VS

0.53ct Yellow Color-Change Diaspore, Baguette, VS

6.4 x 3.5 mm

$ 27.98

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5.46ct Blue Chalcedony, Flower Cut, Translucent

5.46ct Blue Chalcedony, Flower Cut, Translucent

13 x 13 mm (calibrated)

$ 5.98

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0.97ct Pink Morganite, Pear Shape, VVS-VS

0.97ct Pink Morganite, Pear Shape, VVS-VS

10 x 5.1 mm

$ 58.46

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1.75ctw Red Pyrope Garnet, Heart, VVS-VS

1.75ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 12.20

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9.31ct Yellow Calcite, Pear Shape, Translucent

9.31ct Yellow Calcite, Pear Shape, Translucent

23.3 x 13.2 mm

$ 6.39

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10.48ct Pink Rose Quartz, Emerald Cut, Transparent

10.48ct Pink Rose Quartz, Emerald Cut, Transparent

14 x 14 mm (calibrated)

$ 57.41

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22.00ct Blue Turquoise, Oval, Opaque
Turquoise Product Video (709317)

22.00ct Blue Turquoise, Oval, Opaque

24.1 x 16.3 mm

$ 65.74

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0.57ct Pink Morganite, Pear Shape, VVS

0.57ct Pink Morganite, Pear Shape, VVS

8.7 x 4.3 mm

$ 34.35

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1.61ctw Multicolor Opal, Oval, Transparent
Opal Product Video (548159)

1.61ctw Multicolor Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 400.89

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0.92ct Yellow Beryl, Oval, VS

0.92ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 22.91

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4.70ctw Violet Amethyst, Fancy, VS

4.70ctw Violet Amethyst, Fancy, VS

9 x 4.7 mm

$ 30.89

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0.35ct Blue Kyanite, Round, SI

0.35ct Blue Kyanite, Round, SI

4.3 mm

$ 8.72

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8.68ct Black Tourmaline, Oval, Opaque

8.68ct Black Tourmaline, Oval, Opaque

13.3 x 11.8 mm

$ 43.23

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4.70ct Yellow Apatite, Emerald Cut, VS-SI
Apatite Product Video (395816)

4.70ct Yellow Apatite, Emerald Cut, VS-SI

9.5 x 9.3 mm

$ 191.14

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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

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 -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 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 -> 9 star ratings

I do enjoy this website and the wide selection. I would like to see more untreated stones. I also wasn't able to see my past order when I logged in.

Posted By Great selection, ok website in July, 2026
Source: Bizrate

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

Very good

Posted By Niska in August, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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