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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: 6-7
For Example: 8-9
Bi-color Untreated Gemstones
Black Untreated Gemstones
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Green Untreated Gemstones
Multicolor Untreated Gemstones
Orange Untreated Gemstones
Pink Untreated Gemstones
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Yellow Untreated Gemstones
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10.12ct Brown Tiger'S Eye, Baguette, Opaque

10.12ct Brown Tiger'S Eye, Baguette, Opaque

16 x 12 mm (calibrated)

$ 13.11

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7.00ctw White Topaz, Round, VVS-VS
Topaz Product Video (389200)

7.00ctw White Topaz, Round, VVS-VS

9 mm (calibrated)

$ 33.37

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26.69ct Violet Lepidolite, Fancy, Opaque

26.69ct Violet Lepidolite, Fancy, Opaque

39.1 x 9.3 mm

$ 7.98

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1.25ct Green Sphene, Oval, Transparent

1.25ct Green Sphene, Oval, Transparent

7 x 7.6 mm

$ 6.86

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0.58ct Pink Spinel, Cushion, VS

0.58ct Pink Spinel, Cushion, VS

5 x 5 mm (calibrated)

$ 20.73

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11.16ct Black Tourmaline, Emerald Cut, Opaque

11.16ct Black Tourmaline, Emerald Cut, Opaque

23.6 x 7.4 mm

$ 55.58

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1.63ct White Topaz, Marquise, VVS-VS

1.63ct White Topaz, Marquise, VVS-VS

12 x 5 mm

$ 9.47

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109.78ct Multicolor Jasper, Oval, Opaque
Jasper Product Video (486606)

109.78ct Multicolor Jasper, Oval, Opaque

55.4 x 43.4 mm

$ 92.61

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5.39ct Turquoise Hemimorphite Druzy, Fancy, Opaque

5.39ct Turquoise Hemimorphite Druzy, Fancy, Opaque

13.7 x 9.9 mm

$ 88.59

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1.40ct Pink Tourmaline, Oval, Transparent

1.40ct Pink Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 55.78

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2.22ct Orange Hessonite Garnet, Cushion, VS-SI

2.22ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 41.64

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30.61ct Gray Hematite, Pear Shape, Opaque

30.61ct Gray Hematite, Pear Shape, Opaque

25 x 18 mm (calibrated)

$ 30.86

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0.45ct Multicolor Opal, Pear Shape, Transparent

0.45ct Multicolor Opal, Pear Shape, Transparent

7.7 x 4.9 mm

$ 11.21

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12.84ct White Rainbow Moonstone, Pear Shape, Transparent

12.84ct White Rainbow Moonstone, Pear Shape, Transparent

16 x 16 mm (calibrated)

$ 102.31

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1.02ct Pink Morganite, Round, VS

1.02ct Pink Morganite, Round, VS

6.5 mm (calibrated)

$ 39.62

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2.32ct White Topaz, Square, Transparent

2.32ct White Topaz, Square, Transparent

7 x 7 mm (calibrated)

$ 11.55

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23.68ct Multicolor Jasper, Oval, Opaque

23.68ct Multicolor Jasper, Oval, Opaque

27 x 20 mm (calibrated)

$ 18.87

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1.54ct Multicolor Opal, Oval, Transparent

1.54ct Multicolor Opal, Oval, Transparent

9 x 7 mm (calibrated)

$ 46.02

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4.43ct Green Druzy Variscite, Fancy, Opaque

4.43ct Green Druzy Variscite, Fancy, Opaque

17.6 x 11 mm

$ 20.92

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0.49ct Blue Kyanite, Round, SI

0.49ct Blue Kyanite, Round, SI

4.2 mm

$ 12.20

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62.45ct Violet Charoite, Oval, Opaque
Charoite Product Video (435141)

62.45ct Violet Charoite, Oval, Opaque

40.8 x 29.5 mm

$ 102.64

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13.07ct Brown Smoky Quartz, Flower Cut, Transparent

13.07ct Brown Smoky Quartz, Flower Cut, Transparent

15 x 15 mm (calibrated)

$ 35.81

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3.02ct White Moonstone, Oval, Translucent

3.02ct White Moonstone, Oval, Translucent

10 x 8 mm (calibrated)

$ 26.48

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7.84ct Green Druzy Variscite, Fancy, Opaque

7.84ct Green Druzy Variscite, Fancy, Opaque

20 x 19.4 mm

$ 8.05

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 -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
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

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
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

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate
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