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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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1.08ct Brown Color-Change Garnet, Oval, VVS-VS

1.08ct Brown Color-Change Garnet, Oval, VVS-VS

6.4 x 5.5 mm

$ 86.29

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6.34ct Brown Smoky Quartz, Pear Shape, VS

6.34ct Brown Smoky Quartz, Pear Shape, VS

15.1 x 11.1 mm

$ 12.63

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2.76ct Turquoise Grandidierite, Pear Shape, Translucent

2.76ct Turquoise Grandidierite, Pear Shape, Translucent

12.1 x 7.4 mm

$ 137.45

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20.39ct Brown Tiger'S Eye, Fancy, Opaque

20.39ct Brown Tiger'S Eye, Fancy, Opaque

31.5 x 8.9 mm

$ 10.16

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2.27ct Green Tourmaline, Emerald Cut, VVS

2.27ct Green Tourmaline, Emerald Cut, VVS

26.3 x 3.3 mm

$ 56.52

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2.55ct Pink Strawberry Quartz, Oval, Transparent

2.55ct Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 12.70

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18.25ct Violet Amethyst, Cushion, VVS

18.25ct Violet Amethyst, Cushion, VVS

20 x 15 mm (calibrated)

$ 127.24

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1.44ctw Red Pyrope Garnet, Square, VS

1.44ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 11.05

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5.10ct Orange Sunstone, Oval, Translucent

5.10ct Orange Sunstone, Oval, Translucent

12 x 10 mm (calibrated)

$ 30.46

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1.15ct Yellow Beryl, Trillion, VS

1.15ct Yellow Beryl, Trillion, VS

7 x 7 mm (calibrated)

$ 27.49

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24.83ct Green Aventurine, Fancy, Opaque

24.83ct Green Aventurine, Fancy, Opaque

36.8 x 9.9 mm

$ 2.06

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6.93ct Brown Moonstone, Oval, Translucent

6.93ct Brown Moonstone, Oval, Translucent

15.1 x 9.5 mm

$ 14.96

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1.08ct Orange Hessonite Garnet, Square, VS-SI

1.08ct Orange Hessonite Garnet, Square, VS-SI

5 x 5 mm (calibrated)

$ 18.84

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12.05ct Violet Amethyst, Pear Shape, VS-SI

12.05ct Violet Amethyst, Pear Shape, VS-SI

19.7 x 12.8 mm

$ 96.40

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0.62ct Pink Morganite, Pear Shape, VVS

0.62ct Pink Morganite, Pear Shape, VVS

7.4 x 4.7 mm

$ 27.79

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4.22ct Pink Rose Quartz, Emerald Cut, Transparent

4.22ct Pink Rose Quartz, Emerald Cut, Transparent

10 x 10 mm (calibrated)

$ 23.12

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4.27ct Yellow Citrine, Emerald Cut, VVS-VS

4.27ct Yellow Citrine, Emerald Cut, VVS-VS

11 x 9 mm (calibrated)

$ 32.75

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1.20ct Pink Strawberry Quartz, Oval, Translucent

1.20ct Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 15.18

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2.32ct Green Fluorite, Pear Shape, Transparent

2.32ct Green Fluorite, Pear Shape, Transparent

10.6 x 7 mm

$ 9.25

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1.73ct Yellow Citrine, Heart, VVS

1.73ct Yellow Citrine, Heart, VVS

8 x 8 mm (calibrated)

$ 12.06

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12.38ct Multicolor Rainbow Pyrite, Trillion, Opaque

12.38ct Multicolor Rainbow Pyrite, Trillion, Opaque

20.9 x 18.6 mm

$ 32.06

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4.15ct Red Rhodolite Garnet, Heart, VVS-VS
Rhodolite Garnet Product Video (745778)

4.15ct Red Rhodolite Garnet, Heart, VVS-VS

11 x 9 mm (calibrated)

$ 172.23

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2.87ct Purple Rhodolite Garnet, Oval, VVS-VS

2.87ct Purple Rhodolite Garnet, Oval, VVS-VS

8.9 x 7.6 mm

$ 76.94

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1.45ct Orange Moonstone, Marquise, Translucent

1.45ct Orange Moonstone, Marquise, Translucent

10 x 5 mm (calibrated)

$ 2.89

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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

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 -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!

Posted By Matthew K. in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very pleasant

Posted By Varun in June, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate
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