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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
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

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For Example: 8-9
Bi-color Untreated Gemstones
Black Untreated Gemstones
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Green Untreated Gemstones
Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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4.53ct Yellow Citrine, Round, VVS

4.53ct Yellow Citrine, Round, VVS

11 mm (calibrated)

$ 29.78

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1.23ct Orange Hessonite Garnet, Oval, VS

1.23ct Orange Hessonite Garnet, Oval, VS

7.4 x 5.8 mm

$ 18.79

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50.01ct Multicolor Tiger'S Eye Matrix, Baguette, Opaque

50.01ct Multicolor Tiger'S Eye Matrix, Baguette, Opaque

32.8 x 19.9 mm

$ 22.41

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1.44ct Yellow Tourmaline, Round, Transparent

1.44ct Yellow Tourmaline, Round, Transparent

7 mm (calibrated)

$ 20.14

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1.27ct Green Sphene, Oval, Transparent

1.27ct Green Sphene, Oval, Transparent

6.6 x 5.2 mm

$ 6.32

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1.50ct Green Tourmaline, Oval, Transparent

1.50ct Green Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 27.39

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23.40ct Multicolor Pietersite, Oval, Opaque
Pietersite Product Video (447785)

23.40ct Multicolor Pietersite, Oval, Opaque

30 x 22 mm (calibrated)

$ 76.91

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3.42ctw Multicolor Labradorite, Round, Translucent

3.42ctw Multicolor Labradorite, Round, Translucent

7 mm (calibrated)

$ 8.31

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23.04ct Black Nuummite, Oval, Opaque

23.04ct Black Nuummite, Oval, Opaque

23.6 x 13.9 mm

$ 100.21

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19.01ct Yellow Rutile Quartz, Oval, Translucent

19.01ct Yellow Rutile Quartz, Oval, Translucent

25 x 15.8 mm

$ 20.82

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2.22ct Yellow Citrine, Oval, VVS

2.22ct Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 17.02

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1.50ctw Yellow Citrine, Trillion, VVS-VS

1.50ctw Yellow Citrine, Trillion, VVS-VS

6 x 6 mm (calibrated)

$ 10.46

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3.43ct Yellow Citrine, Oval, VVS-VS

3.43ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 18.79

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2.18ct Multicolor Spectrolite, Oval, Opaque

2.18ct Multicolor Spectrolite, Oval, Opaque

10 x 8 mm (calibrated)

$ 9.97

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17.13ct Multicolor Agate, Oval, Opaque

17.13ct Multicolor Agate, Oval, Opaque

16.9 x 15.3 mm

$ 16.20

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4.17ctw White Topaz, Square, VVS-VS

4.17ctw White Topaz, Square, VVS-VS

4 x 4 mm (calibrated)

$ 33.58

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2.96ct Pink Kunzite, Emerald Cut, VVS-VS

2.96ct Pink Kunzite, Emerald Cut, VVS-VS

8.3 x 6.7 mm

$ 81.46

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2.24ct Orange Hessonite Garnet, Cushion, VS

2.24ct Orange Hessonite Garnet, Cushion, VS

7 x 7 mm (calibrated)

$ 44.17

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37.96ct Brown Tiger'S Eye Matrix, Round, Opaque

37.96ct Brown Tiger'S Eye Matrix, Round, Opaque

25.2 mm

$ 21.56

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23.62ct Green Aventurine, Oval, Translucent

23.62ct Green Aventurine, Oval, Translucent

29.3 x 18.9 mm

$ 23.52

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4.03ct Multicolor Fire Agate, Fancy, Translucent

4.03ct Multicolor Fire Agate, Fancy, Translucent

11 x 9 mm (calibrated)

$ 34.13

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15.79ct Brown Tiger'S Eye, Oval, Opaque

15.79ct Brown Tiger'S Eye, Oval, Opaque

20.8 x 15.5 mm

$ 12.27

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29.96ct White Jadeite, Fancy, Translucent

29.96ct White Jadeite, Fancy, Translucent

43.2 x 14.7 mm

$ 54.48

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11.44ct Blue Color-Change Fluorite, Round, VS
Color-Change Fluorite Product Video (413729)

11.44ct Blue Color-Change Fluorite, Round, VS

14 mm (calibrated)

$ 284.86

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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 -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection of gems at a reasonable price

Posted By Curt in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

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