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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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1.48ct Pink Tourmaline, Oval, VVS-VS

1.48ct Pink Tourmaline, Oval, VVS-VS

9.5 x 6.1 mm

$ 176.89

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3.03ct Pink Kunzite, Emerald Cut, VVS-VS

3.03ct Pink Kunzite, Emerald Cut, VVS-VS

9 x 6 mm (calibrated)

$ 83.38

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4.10ct Multicolor Labradorite, Pear Shape, Translucent

4.10ct Multicolor Labradorite, Pear Shape, Translucent

12 x 8 mm (calibrated)

$ 9.06

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2.21ct Red Almandine Garnet, Oval, VS

2.21ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 82.54

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30.80ct Multicolor Jasper, Oval, Opaque

30.80ct Multicolor Jasper, Oval, Opaque

26.2 x 16.1 mm

$ 17.49

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2.36ct Orange Hessonite Garnet, Oval, VS-SI

2.36ct Orange Hessonite Garnet, Oval, VS-SI

9 x 7.4 mm

$ 42.31

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13.30ctw Violet Amethyst, Oval, Transparent

13.30ctw Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 60.71

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9.99ct Green Tsavorite Garnet, Pear Shape, Translucent
Tsavorite Garnet Product Video (521330)

9.99ct Green Tsavorite Garnet, Pear Shape, Translucent

17.9 x 13.6 mm

$ 218.90

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18.74ct Brown Moonstone, Oval, Opaque

18.74ct Brown Moonstone, Oval, Opaque

20 x 15 mm (calibrated)

$ 41.07

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4.13ct Yellow Apatite, Oval, VS
Apatite Product Video (438940)

4.13ct Yellow Apatite, Oval, VS

12.2 x 9.4 mm

$ 212.66

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0.84ct Yellow Beryl, Oval, VVS

0.84ct Yellow Beryl, Oval, VVS

8 x 6 mm (calibrated)

$ 16.04

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2.06ctw Red Pyrope Garnet, Marquise, VVS-VS

2.06ctw Red Pyrope Garnet, Marquise, VVS-VS

9.7 x 4.9 mm

$ 18.06

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0.99ct Brown Color-Change Garnet, Round, VS

0.99ct Brown Color-Change Garnet, Round, VS

6 mm (calibrated)

$ 79.09

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0.72ct Multicolor Opal, Pear Shape, Translucent

0.72ct Multicolor Opal, Pear Shape, Translucent

8 x 6 mm (calibrated)

$ 17.99

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1.24ct Pink Morganite, Round, VS

1.24ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 67.93

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1.01ct Yellow Chrysoberyl, Oval, VVS
Chrysoberyl Product Video (367378)

1.01ct Yellow Chrysoberyl, Oval, VVS

7 x 5 mm (calibrated)

$ 116.99

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3.59ctw Yellow Citrine, Square, VS

3.59ctw Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 24.94

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3.68ctw Brown Smoky Quartz, Round, VS

3.68ctw Brown Smoky Quartz, Round, VS

8 mm (calibrated)

$ 16.13

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0.52ct Violet Amethyst, Emerald Cut, VS-SI

0.52ct Violet Amethyst, Emerald Cut, VS-SI

6 x 4 mm (calibrated)

$ 3.02

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3.03ctw Orange Sunstone, Oval, Translucent

3.03ctw Orange Sunstone, Oval, Translucent

6.1 x 4.2 mm

$ 23.24

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3.88ct Orange Spessartite Garnet, Oval, Transparent
Spessartite Garnet Product Video (749880)

3.88ct Orange Spessartite Garnet, Oval, Transparent

10 x 8 mm (calibrated)

$ 96.61

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2.34ctw Green Prehnite, Oval, Transparent

2.34ctw Green Prehnite, Oval, Transparent

6.7 x 5.5 mm

$ 12.82

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4.73ct Yellow Citrine, Briolette, VVS

4.73ct Yellow Citrine, Briolette, VVS

12 x 8 mm (calibrated)

$ 25.50

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18.98ct Gray Hematite, Emerald Cut, Opaque

18.98ct Gray Hematite, Emerald Cut, Opaque

20.3 x 15.8 mm

$ 20.80

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

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Having purchased gemstones from GemSelect before, I knew what to expect. I did find tracking information difficult to find, but beyond that, the experience was very satisfying and I will visit the website again in future.

Posted By L P in September, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Overall the site is good to use and simple to navigate for what i needed and i liked that they are clear and detailed on the size shape and cut of the stones only input id like is for stones that have a specific refractive quality like moonstone in my case if theyd showcase the cut stones refraction so you know how it looks when buying

Posted By Revenant in August, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

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