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Home › Gemstones › Untreated Gemstones

Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
Untreated Gemstones Size
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Untreated Gemstones Treatment

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Yellow Untreated Gemstones
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2.17ct Yellow Citrine, Square, VVS-VS

2.17ct Yellow Citrine, Square, VVS-VS

7.7 x 7.6 mm

$ 12.70

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2.28ct Multicolor Spectrolite, Round, Opaque

2.28ct Multicolor Spectrolite, Round, Opaque

9 mm (calibrated)

$ 10.47

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19.64ct Multicolor Ruby-Zoisite, Pear Shape, Opaque

19.64ct Multicolor Ruby-Zoisite, Pear Shape, Opaque

20.2 x 14.1 mm

$ 59.17

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34.75ct Multicolor Jasper, Pear Shape, Opaque

34.75ct Multicolor Jasper, Pear Shape, Opaque

34.4 x 25.1 mm

$ 19.04

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32.92ct Multicolor Jasper, Oval, Opaque

32.92ct Multicolor Jasper, Oval, Opaque

32.4 x 23.3 mm

$ 22.36

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0.44ct Pink Morganite, Oval, VS

0.44ct Pink Morganite, Oval, VS

5.8 x 4.3 mm

$ 19.72

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1.96ct Pink Strawberry Quartz, Round, Translucent

1.96ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 15.03

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11.40ctw Yellow Citrine, Oval, VVS-VS

11.40ctw Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 68.44

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0.89ctw Red Pyrope Garnet, Square, VS
Pyrope Garnet Product Video (571170)

0.89ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 6.82

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6.62ct Pink Morganite, Pear Shape, Transparent
Morganite Product Video (737626)

6.62ct Pink Morganite, Pear Shape, Transparent

11 x 11 mm (calibrated)

$ 27.47

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1.18ct Green Tourmaline, Baguette, VVS-VS

1.18ct Green Tourmaline, Baguette, VVS-VS

14.8 x 3 mm

$ 41.13

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1.05ct Brown Axinite, Pear Shape, SI

1.05ct Brown Axinite, Pear Shape, SI

8.4 x 5.6 mm

$ 30.74

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25.60ct White Rainbow Moonstone, Oval, Translucent

25.60ct White Rainbow Moonstone, Oval, Translucent

26.6 x 14.4 mm

$ 25.50

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2.01ct Yellow Citrine, Square, VS

2.01ct Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 13.21

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3.65ctw Yellow Citrine, Square, VS

3.65ctw Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 25.35

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2.04ct Red Coral, Oval, Opaque
Coral Product Video (499207)

2.04ct Red Coral, Oval, Opaque

11.9 x 5.4 mm

$ 304.78

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13.22ct Multicolor Pietersite, Pear Shape, Opaque

13.22ct Multicolor Pietersite, Pear Shape, Opaque

22.1 x 15.6 mm

$ 43.89

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22.70ctw Multicolor Jasper, Pear Shape, Opaque

22.70ctw Multicolor Jasper, Pear Shape, Opaque

26.6 x 14.8 mm

$ 13.34

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1.37ct Orange Hessonite Garnet, Cushion, VS

1.37ct Orange Hessonite Garnet, Cushion, VS

7 x 5 mm (calibrated)

$ 27.29

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33.78ct Brown Tiger'S Eye, Fancy, Opaque

33.78ct Brown Tiger'S Eye, Fancy, Opaque

38 x 10.6 mm

$ 3.37

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5.85ct Violet Amethyst, Heart, Transparent

5.85ct Violet Amethyst, Heart, Transparent

12.8 x 11.8 mm

$ 29.13

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4.65ct Multicolor Fire Agate, Oval, Opaque

4.65ct Multicolor Fire Agate, Oval, Opaque

14 x 10 mm (calibrated)

$ 39.68

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2.10ct Yellow Citrine, Trillion, VVS-VS

2.10ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 11.36

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8.22ct Multicolor Labradorite, Marquise, Translucent

8.22ct Multicolor Labradorite, Marquise, Translucent

22.2 x 11.1 mm

$ 9.99

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Why Buy Untreated Gemstones from GemSelect?

Natural Untreated Gemstones

Our untreated gemstones are completely natural and have not undergone any enhancement processes. These gems display their original color and clarity as formed in nature, making them highly valued by collectors, jewelers, and gemstone enthusiasts.

Buy Untreated Gemstones Online

At GemSelect you can easily shop untreated gemstones online with confidence. Our inventory includes carefully sourced loose gemstones from around the world, with full transparency regarding treatments and gem origins.

Natural Untreated Loose Gemstones

Why Choose Untreated Gems?

Untreated gems are prized because they remain exactly as nature created them. Without heat or chemical treatments, these stones offer rarity and authenticity that many collectors and jewelry designers prefer.

Unheated Sapphire and Ruby

Some of the most sought-after untreated gemstones include unheated sapphire and ruby. These rare stones retain their natural color and are highly valued due to the absence of heat treatment commonly used to enhance corundum.

Gemstone Authenticity and Transparency

Every gemstone at GemSelect comes with clear treatment disclosure. When purchasing untreated stones, buyers can be confident they are receiving authentic gems that have not been altered by heat or other enhancement methods.

Untreated Gems for Custom Jewelry

Natural untreated gemstones are perfect for custom jewelry pieces. Their unique appearance ensures every ring, pendant, or pair of earrings features a one-of-a-kind gemstone created by nature.

Rare and Collectible Gemstones

Because many gemstones are routinely treated, truly untreated examples can be relatively rare. Collectors often seek untreated stones because they represent the most natural state of a gemstone.

Learn more about gemstone treatments and natural gem formation on our Gemstone Treatment Guide.

FAQs

What are untreated gemstones?

Untreated gemstones are natural gems that have not been enhanced with heat, chemicals, irradiation, or other treatments. They retain their original appearance as formed in nature.

Are untreated gemstones more valuable?

In many cases untreated gemstones are more valuable because they are rarer than treated stones. Natural color without enhancement is highly prized by collectors and investors.

How can I tell if a gemstone is untreated?

Gemstone treatment is typically determined through gemological testing. Reputable sellers like GemSelect clearly disclose whether a stone is untreated or has received any enhancements.

Which gemstones are commonly untreated?

Some gemstones frequently found untreated include garnet, spinel, peridot, and certain sapphires. However, many gem types may be treated depending on their origin and quality.

Are untreated gemstones suitable for jewelry?

Yes, untreated gemstones can be excellent for jewelry depending on their hardness and durability. Popular choices include sapphire, ruby, spinel, and garnet.

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

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 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 love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate
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