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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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6.73ct Multicolor Boulder Opal, Oval, Opaque

6.73ct Multicolor Boulder Opal, Oval, Opaque

18.2 x 11.7 mm

$ 27.93

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2.82ct Multicolor Opal, Oval, Transparent

2.82ct Multicolor Opal, Oval, Transparent

12.5 x 9.5 mm

$ 70.22

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1.98ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

1.98ct Orange Hessonite Garnet, Emerald Cut, VVS-VS

6.6 x 6.4 mm

$ 33.30

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4.24ctw Red Pyrope Garnet, Square, VVS-VS

4.24ctw Red Pyrope Garnet, Square, VVS-VS

7 x 7 mm (calibrated)

$ 37.16

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2.93ct Green Sphene, Oval, Translucent

2.93ct Green Sphene, Oval, Translucent

8.3 x 7.6 mm

$ 16.05

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33.07ct Multicolor Jasper, Pear Shape, Opaque

33.07ct Multicolor Jasper, Pear Shape, Opaque

27.6 x 21.9 mm

$ 36.24

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49.05ct Multicolor Jasper, Oval, Opaque

49.05ct Multicolor Jasper, Oval, Opaque

37.4 x 21.7 mm

$ 53.74

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12.70ctw Violet Amethyst, Oval, Transparent

12.70ctw Violet Amethyst, Oval, Transparent

14 x 10 mm (calibrated)

$ 50.24

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1.63ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.63ct Gray Sillimanite Cat'S Eye, Oval, Transparent

7.6 x 5.6 mm

$ 5.36

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1.67ct Multicolor Opal, Oval, Transparent

1.67ct Multicolor Opal, Oval, Transparent

11.1 x 8.5 mm

$ 41.58

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1.59ct Purple Kunzite, Fancy, VVS-VS

1.59ct Purple Kunzite, Fancy, VVS-VS

6.6 x 6.4 mm

$ 39.59

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1.36ct Green Tourmaline, Emerald Cut, VVS-VS

1.36ct Green Tourmaline, Emerald Cut, VVS-VS

17.9 x 3.1 mm

$ 32.78

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8.74ct Turquoise Larimar, Pear Shape, Opaque
Larimar Product Video (391509)

8.74ct Turquoise Larimar, Pear Shape, Opaque

21.8 x 13.2 mm

$ 114.91

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4.49ctw White Topaz, Cushion, VS

4.49ctw White Topaz, Cushion, VS

4.6 x 4.5 mm

$ 24.60

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11.65ctw Multicolor Labradorite, Round, Translucent

11.65ctw Multicolor Labradorite, Round, Translucent

14 mm (calibrated)

$ 12.77

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3.61ct Pink Tourmaline, Emerald Cut, VS

3.61ct Pink Tourmaline, Emerald Cut, VS

10.9 x 7 mm

$ 177.99

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1.32ct Yellow Sphene, Oval, VS-SI

1.32ct Yellow Sphene, Oval, VS-SI

7.3 x 5.3 mm

$ 93.13

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1.81ct Red Almandine Garnet, Marquise, VVS

1.81ct Red Almandine Garnet, Marquise, VVS

12 x 6 mm (calibrated)

$ 67.60

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29.07ct Violet Amethyst, Cushion, VVS

29.07ct Violet Amethyst, Cushion, VVS

19.9 x 19.1 mm

$ 241.28

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3.40ct Brown Rutile Quartz, Round, Transparent

3.40ct Brown Rutile Quartz, Round, Transparent

11 mm (calibrated)

$ 8.53

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0.87ct Green Peridot, Pear Shape, VVS-VS

0.87ct Green Peridot, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 6.07

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3.23ctw Yellow Beryl, Oval, VVS-VS

3.23ctw Yellow Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 64.34

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1.57ct Pink Tourmaline, Oval, VVS-VS
Tourmaline Product Video (525283)

1.57ct Pink Tourmaline, Oval, VVS-VS

7.5 x 6.9 mm

$ 240.82

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9.93ct Multicolor Labradorite, Pear Shape, Translucent

9.93ct Multicolor Labradorite, Pear Shape, Translucent

21.9 x 16 mm

$ 21.76

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

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

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