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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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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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10.19ctw Multicolor Ruby In Fuchsite, Marquise, Translucent
Ruby in Fuchsite Product Video (385555)

10.19ctw Multicolor Ruby In Fuchsite, Marquise, Translucent

20.2 x 9.9 mm

$ 75.14

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4.06ct Orange Sunstone, Round, Translucent

4.06ct Orange Sunstone, Round, Translucent

11 mm (calibrated)

$ 37.07

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45.71ct Multicolor Labradorite, Oval, Opaque

45.71ct Multicolor Labradorite, Oval, Opaque

31.9 x 23 mm

$ 40.98

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6.17ct Yellow Citrine, Oval, VVS-VS

6.17ct Yellow Citrine, Oval, VVS-VS

13 x 11 mm (calibrated)

$ 39.43

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1.71ct Yellow Sillimanite Cat'S Eye, Oval, Transparent

1.71ct Yellow Sillimanite Cat'S Eye, Oval, Transparent

7.3 x 5.3 mm

$ 5.62

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2.48ct Orange Hessonite Garnet, Cushion, SI

2.48ct Orange Hessonite Garnet, Cushion, SI

7 x 7 mm (calibrated)

$ 46.52

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75.10ct Multicolor Quartz With Marcasite, Round, Transparent
Quartz With Marcasite Product Video (617897)

75.10ct Multicolor Quartz With Marcasite, Round, Transparent

22.5 mm

$ 411.40

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1.74ct Orange Hessonite Garnet, Cushion, VVS-VS
Hessonite Garnet Product Video (644360)

1.74ct Orange Hessonite Garnet, Cushion, VVS-VS

7.7 x 7.3 mm

$ 86.65

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0.31ct Green Kornerupine, Oval, VS-SI

0.31ct Green Kornerupine, Oval, VS-SI

4.7 x 3.7 mm

$ 26.55

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37.43ct Multicolor Labradorite, Oval, Opaque

37.43ct Multicolor Labradorite, Oval, Opaque

32.8 x 22.3 mm

$ 33.56

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12.80ct Pink Rose Quartz, Emerald Cut, Transparent

12.80ct Pink Rose Quartz, Emerald Cut, Transparent

14 x 14 mm (calibrated)

$ 58.43

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5.38ctw Orange Hessonite Garnet, Cushion, VS-SI

5.38ctw Orange Hessonite Garnet, Cushion, VS-SI

9 x 7 mm (calibrated)

$ 89.31

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22.34ct White Howlite, Pear Shape, Opaque

22.34ct White Howlite, Pear Shape, Opaque

30.1 x 18.6 mm

$ 11.12

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80.06ct Multicolor Jasper, Pear Shape, Opaque

80.06ct Multicolor Jasper, Pear Shape, Opaque

43.8 x 20.3 mm

$ 49.11

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6.35ct Brown Smoky Quartz, Marquise, VVS

6.35ct Brown Smoky Quartz, Marquise, VVS

25.3 x 9.1 mm

$ 44.27

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12.36ct Pink Morganite, Trillion, Translucent
Morganite Product Video (594889)

12.36ct Pink Morganite, Trillion, Translucent

15 x 15 mm (calibrated)

$ 112.85

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6.98ct White Rainbow Moonstone, Baguette, Transparent

6.98ct White Rainbow Moonstone, Baguette, Transparent

18.9 x 6.7 mm

$ 104.28

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56.79ct Multicolor Rainbow Pyrite, Fancy, Opaque
Rainbow Pyrite Product Video (645836)

56.79ct Multicolor Rainbow Pyrite, Fancy, Opaque

34.8 x 17.6 mm

$ 147.06

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11.87ct Blue Aquamarine, Emerald Cut, VVS
Aquamarine Product Video (450371)

11.87ct Blue Aquamarine, Emerald Cut, VVS

17.4 x 10 mm

$ 2,955.63

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8.39ct Multicolor Ruby In Fuchsite, Marquise, Translucent

8.39ct Multicolor Ruby In Fuchsite, Marquise, Translucent

23.7 x 11.5 mm

$ 62.69

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13.86ct Yellow Rutile Quartz, Pear Shape, Transparent

13.86ct Yellow Rutile Quartz, Pear Shape, Transparent

21.7 x 15.2 mm

$ 48.75

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5.81ct Pink Morganite, Pear Shape, Transparent

5.81ct Pink Morganite, Pear Shape, Transparent

14 x 10 mm (calibrated)

$ 53.05

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15.37ct Blue Aquamarine, Emerald Cut, VVS
Aquamarine Product Video (450370)

15.37ct Blue Aquamarine, Emerald Cut, VVS

23.7 x 9.2 mm

$ 2,551.42

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21.74ct Pink Kunzite, Pear Shape, VS
Kunzite Product Video (437944)

21.74ct Pink Kunzite, Pear Shape, VS

23.6 x 11.7 mm

$ 476.37

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

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

Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.

Posted By Darkstar in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Fast and reliable service.

Posted By Zæck in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate
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