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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

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For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
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Golden Natural Untreated Gemstones
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Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
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Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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6.63ct Blue Hemimorphite Druzy, Fancy, Opaque

6.63ct Blue Hemimorphite Druzy, Fancy, Opaque

14 x 10 mm

$ 108.96

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3.63ct Yellow Citrine, Oval, VVS

3.63ct Yellow Citrine, Oval, VVS

12.3 x 9.1 mm

$ 22.00

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8.37ct Pink Kunzite, Pear Shape, VVS-VS

8.37ct Pink Kunzite, Pear Shape, VVS-VS

14 x 12 mm (calibrated)

$ 208.41

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0.91ct Yellow Zircon, Oval, VVS

0.91ct Yellow Zircon, Oval, VVS

6 x 4.7 mm

$ 13.60

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2.95ct Yellow Cat'S Eye Apatite, Oval, Translucent

2.95ct Yellow Cat'S Eye Apatite, Oval, Translucent

9.8 x 5.9 mm

$ 16.60

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1.36ct Pink Tourmaline, Oval, VVS
Tourmaline Product Video (747448)

1.36ct Pink Tourmaline, Oval, VVS

7.3 x 6.4 mm

$ 203.18

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1.51ct Orange Moonstone, Marquise, Translucent

1.51ct Orange Moonstone, Marquise, Translucent

10 x 5 mm (calibrated)

$ 3.00

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4.61ctw Red Pyrope Garnet, Square, VS

4.61ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 35.36

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29.11ct Multicolor Jasper, Oval, Opaque

29.11ct Multicolor Jasper, Oval, Opaque

33.1 x 21.2 mm

$ 17.54

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8.66ct Multicolor Pietersite, Oval, Opaque

8.66ct Multicolor Pietersite, Oval, Opaque

16.3 x 11.3 mm

$ 20.96

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19.80ct Multicolor Pietersite, Marquise, Opaque

19.80ct Multicolor Pietersite, Marquise, Opaque

37.1 x 11 mm

$ 65.74

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3.30ct Red Almandine Garnet, Pear Shape, VVS-VS

3.30ct Red Almandine Garnet, Pear Shape, VVS-VS

12 x 8 mm (calibrated)

$ 27.39

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2.72ctw Green Chrome Diopside, Marquise, VS
Chrome Diopside Product Video (724782)

2.72ctw Green Chrome Diopside, Marquise, VS

10 x 5 mm (calibrated)

$ 67.73

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1.65ct Blue Kyanite, Oval, VS-SI

1.65ct Blue Kyanite, Oval, VS-SI

8 x 6 mm (calibrated)

$ 36.15

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0.74ct Yellow Color-Change Diaspore, Cushion, VVS-VS

0.74ct Yellow Color-Change Diaspore, Cushion, VVS-VS

6.4 x 4.4 mm

$ 39.06

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2.61ctw Green Peridot, Round, VVS-VS

2.61ctw Green Peridot, Round, VVS-VS

4.5 mm (calibrated)

$ 35.75

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3.87ctw Yellow Citrine, Round, VVS-VS

3.87ctw Yellow Citrine, Round, VVS-VS

8 mm (calibrated)

$ 30.83

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11.61ct Multicolor Agate, Oval, Opaque

11.61ct Multicolor Agate, Oval, Opaque

15.1 x 12.7 mm

$ 19.66

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35.43ct Multicolor Agate Geode, Fancy, Opaque
Agate Geode Product Video (391882)

35.43ct Multicolor Agate Geode, Fancy, Opaque

26.6 x 26.1 mm

$ 38.81

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1.03ct Yellow Citrine, Trillion, VS

1.03ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 7.90

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4.27ctw Yellow Citrine, Oval, VVS-VS

4.27ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 23.40

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0.97ct Purple Rhodolite Garnet, Pear Shape, VS

0.97ct Purple Rhodolite Garnet, Pear Shape, VS

7 x 5 mm (calibrated)

$ 25.76

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12.79ct Purple Ruby-Zoisite, Flower Cut, Opaque

12.79ct Purple Ruby-Zoisite, Flower Cut, Opaque

19.5 x 14 mm

$ 15.54

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1.17ct Yellow Morganite, Oval, VVS-VS

1.17ct Yellow Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 64.09

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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 -> 10 star ratings

It was great! Great photos

Posted By Marcia in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
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 -> 10 star ratings

Easy process.

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