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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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0.83ct Purple Spinel, Cushion, VS

0.83ct Purple Spinel, Cushion, VS

6.6 x 4.7 mm

$ 68.89

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2.71ct Blue Chalcedony, Oval, Transparent

2.71ct Blue Chalcedony, Oval, Transparent

10 x 8 mm (calibrated)

$ 5.40

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6.51ct Green Jadeite, Round, Translucent

6.51ct Green Jadeite, Round, Translucent

10 mm (calibrated)

$ 21.40

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0.38ct Pink Morganite, Oval, VS

0.38ct Pink Morganite, Oval, VS

6 x 4 mm (calibrated)

$ 17.03

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1.51ct Orange Hessonite Garnet, Oval, VVS-VS

1.51ct Orange Hessonite Garnet, Oval, VVS-VS

7.7 x 6.3 mm

$ 23.07

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21.02ct Multicolor Rhodochrosite, Fancy, Translucent

21.02ct Multicolor Rhodochrosite, Fancy, Translucent

32.9 x 10.3 mm

$ 22.82

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4.54ctw Orange Moonstone, Cushion, Translucent

4.54ctw Orange Moonstone, Cushion, Translucent

8 x 8 mm (calibrated)

$ 9.05

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2.19ctw Yellow Beryl, Oval, VS

2.19ctw Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 43.62

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9.12ct Black Tourmaline, Oval, Opaque

9.12ct Black Tourmaline, Oval, Opaque

14 x 12 mm (calibrated)

$ 45.42

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18.44ct Multicolor Agate, Oval, Opaque

18.44ct Multicolor Agate, Oval, Opaque

16.5 x 15.3 mm

$ 15.31

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1.72ct Multicolor Tourmaline, Emerald Cut, VVS-VS
Tourmaline Product Video (744045)

1.72ct Multicolor Tourmaline, Emerald Cut, VVS-VS

8.1 x 5.4 mm

$ 385.45

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87.47ct Green Amazonite, Square, Opaque

87.47ct Green Amazonite, Square, Opaque

25.6 x 25.4 mm

$ 50.82

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0.50ct Yellow Beryl, Oval, VVS-VS

0.50ct Yellow Beryl, Oval, VVS-VS

6.6 x 4.8 mm

$ 9.55

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1.44ct Green Tourmaline, Emerald Cut, VVS-VS

1.44ct Green Tourmaline, Emerald Cut, VVS-VS

11.9 x 3.7 mm

$ 37.86

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1.67ct Yellow Citrine, Emerald Cut, VVS-VS

1.67ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 10.97

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5.92ctw Brown Tiger'S Eye, Oval, Opaque

5.92ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 5.89

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0.59ct Red Pyrope Garnet, Heart, VVS-VS

0.59ct Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 14.69

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6.50ct Blue Larimar, Round, Opaque

6.50ct Blue Larimar, Round, Opaque

12 mm (calibrated)

$ 32.12

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1.23ct Yellow Citrine, Emerald Cut, VVS

1.23ct Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 8.57

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1.42ct Yellow Citrine, Emerald Cut, VVS

1.42ct Yellow Citrine, Emerald Cut, VVS

8 x 6 mm (calibrated)

$ 11.31

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23.48ctw Multicolor Jasper, Oval, Opaque

23.48ctw Multicolor Jasper, Oval, Opaque

18 x 13 mm (calibrated)

$ 25.73

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11.77ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (471780)

11.77ct Turquoise Grandidierite, Oval, Translucent

16.9 x 13.8 mm

$ 902.67

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0.79ct Purple Spinel, Cushion, VVS-VS

0.79ct Purple Spinel, Cushion, VVS-VS

5 x 5 mm (calibrated)

$ 55.08

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5.25ct Black Tourmaline, Emerald Cut, Opaque

5.25ct Black Tourmaline, Emerald Cut, Opaque

14.7 x 7.4 mm

$ 21.79

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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

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
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Love, and have always loved, your website.

Posted By Aberabic in July, 2025
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Overall Rating -> 10 star ratings

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

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I have been very happy with my prior purchases and enjoy the website experience.

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easy site to navigate

Posted By Curt's Cabochons in June, 2025
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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
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