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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

Size Explained

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For Example: 6-7
For Example: 8-9
Bi-color Untreated Gemstones
Black Untreated Gemstones
Blue Untreated Gemstones
Brown Untreated Gemstones
Golden Untreated Gemstones
Gray Untreated Gemstones
Green Untreated Gemstones
Multicolor Untreated Gemstones
Orange Untreated Gemstones
Pink Untreated Gemstones
Purple Untreated Gemstones
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Turquoise Untreated Gemstones
Violet Untreated Gemstones
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Yellow Untreated Gemstones
Single
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11.82ct Multicolor Coral, Oval, Translucent

11.82ct Multicolor Coral, Oval, Translucent

22.2 x 12.9 mm

$ 36.65

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51.51ct Multicolor Jasper, Cushion, Opaque

51.51ct Multicolor Jasper, Cushion, Opaque

33 x 30.7 mm

$ 28.23

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78.93ct Multicolor Jasper, Oval, Opaque

78.93ct Multicolor Jasper, Oval, Opaque

51.8 x 26.1 mm

$ 38.91

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1.16ct Pink Tourmaline, Emerald Cut, VS-SI

1.16ct Pink Tourmaline, Emerald Cut, VS-SI

9.4 x 4 mm

$ 87.69

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2.17ct Orange Hessonite Garnet, Cushion, VS

2.17ct Orange Hessonite Garnet, Cushion, VS

8 x 6 mm (calibrated)

$ 32.27

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7.66ct Blue Larimar, Round, Opaque

7.66ct Blue Larimar, Round, Opaque

13 mm (calibrated)

$ 98.44

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15.20ct Green Bloodstone, Oval, Opaque

15.20ct Green Bloodstone, Oval, Opaque

20.1 x 16.3 mm

$ 22.71

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13.27ct Multicolor Rainbow Pyrite, Trillion, Opaque

13.27ct Multicolor Rainbow Pyrite, Trillion, Opaque

22.6 x 18.7 mm

$ 34.36

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13.26ct Pink Aragonite, Pear Shape, Opaque

13.26ct Pink Aragonite, Pear Shape, Opaque

22.2 x 15.5 mm

$ 15.52

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4.33ctw Red Almandine Garnet, Oval, VS

4.33ctw Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 161.73

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3.77ct Pink Morganite, Pear Shape, Transparent

3.77ct Pink Morganite, Pear Shape, Transparent

12 x 9 mm

$ 41.30

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56.03ct Multicolor Jasper, Oval, Opaque

56.03ct Multicolor Jasper, Oval, Opaque

42 x 25.4 mm

$ 61.39

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1.12ct Purple Spinel, Cushion, VVS-VS
Spinel Product Video (742832)

1.12ct Purple Spinel, Cushion, VVS-VS

6.1 x 5.6 mm

$ 185.92

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19.68ct Brown Tiger'S Eye, Oval, Opaque

19.68ct Brown Tiger'S Eye, Oval, Opaque

24.7 x 16.6 mm

$ 43.13

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7.29ct Pink Kunzite, Oval, VS

7.29ct Pink Kunzite, Oval, VS

13.8 x 8.3 mm

$ 181.52

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1.76ctw Multicolor Andalusite, Oval, VS

1.76ctw Multicolor Andalusite, Oval, VS

6 x 4 mm (calibrated)

$ 94.36

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1.16ct Purple Rhodolite Garnet, Oval, VS

1.16ct Purple Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 30.81

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0.61ct Pink Morganite, Round, VS

0.61ct Pink Morganite, Round, VS

5.5 mm (calibrated)

$ 27.34

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2.86ct Violet Amethyst, Trillion, VVS

2.86ct Violet Amethyst, Trillion, VVS

10 x 10 mm (calibrated)

$ 19.94

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4.38ct Multicolor Pietersite, Oval, Opaque

4.38ct Multicolor Pietersite, Oval, Opaque

18.4 x 8.6 mm

$ 13.09

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0.82ctw Green Peridot, Pear Shape, VVS-VS

0.82ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 6.28

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1.76ct Orange Hessonite Garnet, Oval, VS-SI

1.76ct Orange Hessonite Garnet, Oval, VS-SI

8 x 6.7 mm

$ 34.71

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1.89ct Multicolor Labradorite, Pear Shape, Translucent

1.89ct Multicolor Labradorite, Pear Shape, Translucent

9 x 6 mm (calibrated)

$ 4.18

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1.10ct Yellow Citrine, Trillion, VS

1.10ct Yellow Citrine, Trillion, VS

7 x 7 mm (calibrated)

$ 6.87

View Gem
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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

The process was pleasant, I chose to purchase the stone traditional to the month of March as it is the month in which I was born.

Posted By Maharishi in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

Posted By Beman in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

hassle free experience.

Posted By Jhidron in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future

Posted By Liz in June, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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