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Untreated Gemstones

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

Untreated Gemstones Weight
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Yellow Untreated Gemstones
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1.95ct Yellow Rutile Topaz, Oval, Transparent

1.95ct Yellow Rutile Topaz, Oval, Transparent

8.9 x 6.6 mm

$ 40.46

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5.18ct Yellow Citrine, Oval, VVS-VS

5.18ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 31.11

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2.76ct Yellow Citrine, Oval, Transparent

2.76ct Yellow Citrine, Oval, Transparent

10 x 8 mm (calibrated)

$ 21.17

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32.94ct Multicolor Tiger'S Eye Matrix, Baguette, Opaque

32.94ct Multicolor Tiger'S Eye Matrix, Baguette, Opaque

26.6 x 16.6 mm

$ 32.81

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4.82ct Green Jade, Oval, Opaque

4.82ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 9.60

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1.38ct Yellow Golden Beryl, Oval, VS

1.38ct Yellow Golden Beryl, Oval, VS

9 x 7 mm (calibrated)

$ 33.27

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0.42ct Black Diamond, Square, Opaque

0.42ct Black Diamond, Square, Opaque

3.6 x 3.4 mm

$ 209.16

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2.40ct Yellow Citrine, Oval, VS

2.40ct Yellow Citrine, Oval, VS

9.9 x 7.7 mm

$ 13.15

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16.83ct Multicolor Labradorite, Pear Shape, Transparent/Translucent

16.83ct Multicolor Labradorite, Pear Shape, Transparent/Translucent

20 x 15 mm (calibrated)

$ 37.21

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32.11ct Multicolor Ruby-Zoisite, Square, Opaque
Ruby-Zoisite Product Video (334924)

32.11ct Multicolor Ruby-Zoisite, Square, Opaque

16 x 16 mm (calibrated)

$ 70.36

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5.79ct Pink Strawberry Quartz, Oval, Translucent

5.79ct Pink Strawberry Quartz, Oval, Translucent

14 x 10 mm (calibrated)

$ 34.90

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4.24ct Purple Rhodolite Garnet, Heart, VS

4.24ct Purple Rhodolite Garnet, Heart, VS

9.4 x 8.9 mm

$ 175.96

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3.80ctw Orange Moonstone, Trillion, Translucent

3.80ctw Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 7.57

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25.99ct Green Serpentine, Oval, Translucent

25.99ct Green Serpentine, Oval, Translucent

31.8 x 19.2 mm

$ 55.66

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4.83ct Pink Kunzite, Pear Shape, VVS

4.83ct Pink Kunzite, Pear Shape, VVS

11 x 9 mm (calibrated)

$ 110.76

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3.98ctw Red Pyrope Garnet, Square, VS

3.98ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 30.53

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1.18ct Yellow Chrysoberyl, Pear Shape, VVS-VS
Chrysoberyl Product Video (366665)

1.18ct Yellow Chrysoberyl, Pear Shape, VVS-VS

7.4 x 5.5 mm

$ 114.60

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0.53ct Green Tourmaline, Emerald Cut, VS

0.53ct Green Tourmaline, Emerald Cut, VS

4.7 x 4.1 mm

$ 26.39

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6.75ct Multicolor Fire Agate, Fancy, Opaque

6.75ct Multicolor Fire Agate, Fancy, Opaque

13 x 10.7 mm

$ 52.73

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1.28ct Pink Tourmaline, Emerald Cut, VS

1.28ct Pink Tourmaline, Emerald Cut, VS

10.8 x 4 mm

$ 96.76

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4.34ct Blue Chalcedony, Cushion, Translucent

4.34ct Blue Chalcedony, Cushion, Translucent

12 x 12 mm (calibrated)

$ 16.22

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0.61ct Red Pyrope Garnet, Heart, VVS

0.61ct Red Pyrope Garnet, Heart, VVS

5 x 5 mm (calibrated)

$ 4.86

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9.48ct Green Malachite, Oval, Opaque

9.48ct Green Malachite, Oval, Opaque

15.6 x 11.4 mm

$ 9.45

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5.76ctw Brown Tiger'S Eye, Oval, Opaque

5.76ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 8.61

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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

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The site provided lots of detail, factual data, and good photos. I also like the availability of searching by price range as well as by the type of stone.

Posted By SLIntuitive Donna in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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