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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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0.48ct Violet Amethyst, Emerald Cut, VS

0.48ct Violet Amethyst, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 2.79

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3.65ctw Pink Strawberry Quartz, Oval, Transparent

3.65ctw Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 19.27

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0.67ct Green Tourmaline, Baguette, VVS

0.67ct Green Tourmaline, Baguette, VVS

11.9 x 2.7 mm

$ 23.36

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33.75ct White Scolecite, Oval, Opaque

33.75ct White Scolecite, Oval, Opaque

34.7 x 25.1 mm

$ 39.94

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9.29ctw Multicolor Labradorite, Round, Translucent

9.29ctw Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 20.36

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1.36ct Pink Morganite, Oval, VS

1.36ct Pink Morganite, Oval, VS

8.4 x 6.2 mm

$ 104.30

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5.97ctw Brown Tiger'S Eye, Oval, Opaque

5.97ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 5.94

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4.86ct Green Jade, Oval, Opaque

4.86ct Green Jade, Oval, Opaque

12 x 10 mm (calibrated)

$ 9.68

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2.53ctw Red Pyrope Garnet, Square, VS

2.53ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 19.41

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1.73ct Yellow Beryl, Trillion, VVS-VS

1.73ct Yellow Beryl, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 41.35

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0.93ct Yellow Beryl, Oval, VVS

0.93ct Yellow Beryl, Oval, VVS

8 x 6 mm (calibrated)

$ 18.53

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1.27ct Yellow Beryl, Trillion, VVS

1.27ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 25.30

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47.77ct Multicolor Jasper, Fancy, Opaque

47.77ct Multicolor Jasper, Fancy, Opaque

41.7 x 30.1 mm

$ 40.30

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1.37ct Multicolor Labradorite, Marquise, Translucent

1.37ct Multicolor Labradorite, Marquise, Translucent

10.1 x 5.3 mm

$ 3.03

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0.69ct Black Diamond, Square, Opaque
Diamond Product Video (677845)

0.69ct Black Diamond, Square, Opaque

4.5 x 4.3 mm

$ 327.56

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1.66ct Orange Hessonite Garnet, Oval, VS-SI

1.66ct Orange Hessonite Garnet, Oval, VS-SI

7.9 x 6.5 mm

$ 36.37

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1.71ct Multicolor Opal, Marquise, Transparent

1.71ct Multicolor Opal, Marquise, Transparent

16.1 x 6.4 mm

$ 65.58

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52.00ct Violet Amethyst, Oval, IF
Amethyst Product Video (506058)

52.00ct Violet Amethyst, Oval, IF

24.9 x 21.3 mm

$ 341.83

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0.66ct Pink Spinel, Oval, VVS

0.66ct Pink Spinel, Oval, VVS

5.7 x 4.3 mm

$ 54.78

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22.27ctw Multicolor Fossil Coral, Oval, Opaque

22.27ctw Multicolor Fossil Coral, Oval, Opaque

20.3 x 12.2 mm

$ 36.60

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3.02ct Yellow Citrine, Oval, VS

3.02ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 19.85

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3.02ctw White Topaz, Cushion, VVS-VS

3.02ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 16.54

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1.75ct White Rainbow Moonstone, Oval, Transparent

1.75ct White Rainbow Moonstone, Oval, Transparent

9 x 7 mm (calibrated)

$ 29.79

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2.46ct Pink Kunzite, Emerald Cut, VS

2.46ct Pink Kunzite, Emerald Cut, VS

6.9 x 6.7 mm

$ 61.25

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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 -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
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

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate
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