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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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42.75ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

42.75ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

39.2 x 21.2 mm

$ 24.70

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3.09ct Green Sphene, Pear Shape, SI
Sphene Product Video (413839)

3.09ct Green Sphene, Pear Shape, SI

10.5 x 8.1 mm

$ 338.54

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35.32ct Multicolor Jasper, Fancy, Opaque

35.32ct Multicolor Jasper, Fancy, Opaque

27 x 20 mm (calibrated)

$ 38.69

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1.18ct Red Rhodolite Garnet, Oval, VVS-VS
Rhodolite Garnet Product Video (526055)

1.18ct Red Rhodolite Garnet, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 25.85

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2.28ct Orange Hessonite Garnet, Cushion, VS-SI

2.28ct Orange Hessonite Garnet, Cushion, VS-SI

8.6 x 6.5 mm

$ 33.91

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12.38ct Multicolor Cinnabar, Oval, Opaque

12.38ct Multicolor Cinnabar, Oval, Opaque

21.1 x 15 mm

$ 14.49

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2.34ct Violet Sapphire, Oval, VS-SI
Sapphire Product Video (746899)

2.34ct Violet Sapphire, Oval, VS-SI

9.5 x 7.8 mm

$ 936.00

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1.42ct Yellow Beryl, Round, VS

1.42ct Yellow Beryl, Round, VS

7 mm (calibrated)

$ 28.29

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3.03ct Purple Kunzite, Cushion, VVS
Kunzite Product Video (691182)

3.03ct Purple Kunzite, Cushion, VVS

8.7 x 8 mm

$ 83.38

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46.16ct Multicolor Rhodochrosite, Oval, Translucent

46.16ct Multicolor Rhodochrosite, Oval, Translucent

39.1 x 16.4 mm

$ 60.69

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0.23ct Violet Iolite, Baguette, VS

0.23ct Violet Iolite, Baguette, VS

5 x 3 mm (calibrated)

$ 9.16

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7.06ct Yellow Apatite, Oval, VS
Apatite Product Video (385925)

7.06ct Yellow Apatite, Oval, VS

14.7 x 11.7 mm

$ 372.82

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2.09ct Yellow Citrine, Oval, VVS-VS

2.09ct Yellow Citrine, Oval, VVS-VS

10 x 7 mm (calibrated)

$ 16.03

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70.41ctw Gray Hematite, Marquise, Opaque

70.41ctw Gray Hematite, Marquise, Opaque

29.4 x 13.6 mm

$ 68.66

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21.82ct White Howlite, Cushion, Opaque

21.82ct White Howlite, Cushion, Opaque

21.5 x 18.1 mm

$ 10.22

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23.77ctw Multicolor Fossil Coral, Fancy, Opaque

23.77ctw Multicolor Fossil Coral, Fancy, Opaque

20.6 x 12 mm

$ 26.05

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12.52ct Green Prehnite, Fancy, Translucent

12.52ct Green Prehnite, Fancy, Translucent

18.4 x 15.6 mm

$ 20.58

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1.62ct Green Tourmaline, Cushion, VVS
Tourmaline Product Video (747224)

1.62ct Green Tourmaline, Cushion, VVS

7.4 x 6.6 mm

$ 188.24

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3.88ct Yellow Color-Change Diaspore, Cushion, VS
Color-Change Diaspore Product Video (400536)

3.88ct Yellow Color-Change Diaspore, Cushion, VS

21.1 x 4.9 mm

$ 966.12

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2.81ctw Violet Amethyst, Heart, VVS-VS

2.81ctw Violet Amethyst, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 21.56

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1.37ct Green Sphene, Oval, Transparent

1.37ct Green Sphene, Oval, Transparent

6.7 x 6.5 mm

$ 6.82

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12.95ct Multicolor Agate, Oval, Opaque

12.95ct Multicolor Agate, Oval, Opaque

20.9 x 12.1 mm

$ 10.32

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1.75ct Multicolor Opal, Oval, Transparent

1.75ct Multicolor Opal, Oval, Transparent

10.9 x 7.9 mm

$ 78.44

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18.06ct Violet Amethyst, Pear Shape, VVS-VS

18.06ct Violet Amethyst, Pear Shape, VVS-VS

21.2 x 16 mm

$ 125.91

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

I have made many purchases from GemSelect over the years, and I have a beautiful collection of jewelry as a result. My purchases have always been exactly as described, and I have enjoyed doing business with you.

Posted By MMM in July, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
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

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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