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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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0.64ct Orange Citrine, Oval, VVS-VS

0.64ct Orange Citrine, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 6.37

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0.92ct Orange Hessonite Garnet, Round, VS

0.92ct Orange Hessonite Garnet, Round, VS

5.5 mm (calibrated)

$ 14.05

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4.43ctw Yellow Citrine, Oval, VVS-VS

4.43ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 29.12

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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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1.22ct Purple Sapphire, Cushion, VS
Sapphire Product Video (447791)

1.22ct Purple Sapphire, Cushion, VS

6.7 x 5.3 mm

$ 643.37

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1.81ct Violet Amethyst, Emerald Cut, VS

1.81ct Violet Amethyst, Emerald Cut, VS

9 x 7 mm (calibrated)

$ 10.89

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17.37ctw Green Aventurine, Pear Shape, Translucent

17.37ctw Green Aventurine, Pear Shape, Translucent

19.4 x 12.7 mm

$ 38.06

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0.44ct Green Peridot, Oval, VVS-VS

0.44ct Green Peridot, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 7.89

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4.82ct Violet Amethyst, Oval, Transparent

4.82ct Violet Amethyst, Oval, Transparent

13.2 x 10.3 mm

$ 33.61

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0.65ct Yellow Color-Change Diaspore, Emerald Cut, VS

0.65ct Yellow Color-Change Diaspore, Emerald Cut, VS

5.7 x 4.5 mm

$ 20.68

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2.32ctw Pink Tourmaline, Round, Transparent

2.32ctw Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 38.45

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0.90ctw Yellow Citrine, Heart, VVS

0.90ctw Yellow Citrine, Heart, VVS

5 x 5 mm (calibrated)

$ 7.17

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3.16ct Yellow Citrine, Square, VS

3.16ct Yellow Citrine, Square, VS

9 x 9 mm (calibrated)

$ 17.31

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2.71ctw Gray Sillimanite Cat'S Eye, Oval, Transparent

2.71ctw Gray Sillimanite Cat'S Eye, Oval, Transparent

7.6 x 5.6 mm

$ 8.55

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0.50ct Orange Spessartite Garnet, Pear Shape, VS

0.50ct Orange Spessartite Garnet, Pear Shape, VS

5 x 4 mm (calibrated)

$ 17.43

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3.38ct Pink Strawberry Quartz, Oval, Transparent

3.38ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 25.35

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0.25ct Green Kornerupine, Oval, VVS

0.25ct Green Kornerupine, Oval, VVS

3 x 3 mm (calibrated)

$ 7.12

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1.74ct Orange Hessonite Garnet, Oval, VVS-VS

1.74ct Orange Hessonite Garnet, Oval, VVS-VS

8.4 x 6.4 mm

$ 26.58

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0.76ct Yellow Morganite, Pear Shape, VVS-VS

0.76ct Yellow Morganite, Pear Shape, VVS-VS

8 x 5.7 mm

$ 33.31

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10.50ct Multicolor Pietersite, Pear Shape, Opaque

10.50ct Multicolor Pietersite, Pear Shape, Opaque

20.2 x 12.3 mm

$ 25.73

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5.58ct Multicolor Quartz With Marcasite, Oval, Transparent

5.58ct Multicolor Quartz With Marcasite, Oval, Transparent

14.8 x 10.6 mm

$ 35.71

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5.63ct Turquoise Hemimorphite Druzy, Fancy, Translucent
Hemimorphite Druzy Product Video (439515)

5.63ct Turquoise Hemimorphite Druzy, Fancy, Translucent

14.8 x 9.1 mm

$ 92.53

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4.84ctw Yellow Citrine, Oval, VVS-VS

4.84ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 31.81

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0.65ct Yellow Zircon, Oval, VVS

0.65ct Yellow Zircon, Oval, VVS

5.2 x 4 mm

$ 9.71

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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

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

Posted By Elansary in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to conduct search, good amount of stock to select from along with variety of prices.

Posted By Que in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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