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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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1.96ct Green Tourmaline, Emerald Cut, VS

1.96ct Green Tourmaline, Emerald Cut, VS

17.8 x 3.7 mm

$ 47.24

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3.19ct Yellow Rutile Topaz, Pear Shape, Transparent

3.19ct Yellow Rutile Topaz, Pear Shape, Transparent

12.4 x 7.3 mm

$ 66.19

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1.93ct Orange Hessonite Garnet, Round, VS

1.93ct Orange Hessonite Garnet, Round, VS

7.5 mm (calibrated)

$ 42.29

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2.39ctw Multicolor Labradorite, Oval, Translucent

2.39ctw Multicolor Labradorite, Oval, Translucent

7 x 7 mm (calibrated)

$ 3.97

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13.09ct Green Maw-Sit-Sit, Oval, Opaque

13.09ct Green Maw-Sit-Sit, Oval, Opaque

15.9 x 13.3 mm

$ 43.03

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5.58ct Brown Smoky Quartz, Round, VVS

5.58ct Brown Smoky Quartz, Round, VVS

12 mm (calibrated)

$ 30.57

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2.72ct Green Prehnite, Oval, Transparent/Translucent

2.72ct Green Prehnite, Oval, Transparent/Translucent

8.8 x 7.7 mm

$ 14.62

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1.23ct Yellow Citrine, Round, VVS

1.23ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 8.17

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1.82ct Orange Fire Opal, Oval, Transparent
Fire Opal Product Video (370282)

1.82ct Orange Fire Opal, Oval, Transparent

10 x 8 mm (calibrated)

$ 89.73

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4.80ct Black Star Diopside, Round, Opaque

4.80ct Black Star Diopside, Round, Opaque

9 mm (calibrated)

$ 23.90

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3.34ct Pink Strawberry Quartz, Oval, Translucent

3.34ct Pink Strawberry Quartz, Oval, Translucent

10 x 8 mm (calibrated)

$ 25.61

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33.61ct Green Amazonite, Pear Shape, Opaque

33.61ct Green Amazonite, Pear Shape, Opaque

29.8 x 25.8 mm

$ 26.78

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2.74ctw White Topaz, Cushion, VVS-VS

2.74ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 15.01

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1.39ctw Yellow Citrine, Pear Shape, VVS-VS

1.39ctw Yellow Citrine, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 9.13

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13.43ct Turquoise Larimar, Oval, Opaque
Larimar Product Video (673936)

13.43ct Turquoise Larimar, Oval, Opaque

20 x 15 mm (calibrated)

$ 160.35

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2.44ctw Red Pyrope Garnet, Marquise, VVS-VS

2.44ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5.1 mm

$ 21.38

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0.55ct Purple Spinel, Cushion, VVS-VS

0.55ct Purple Spinel, Cushion, VVS-VS

5.2 x 4.6 mm

$ 45.65

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1.75ct Orange Moonstone, Square, Translucent

1.75ct Orange Moonstone, Square, Translucent

6.3 x 6.2 mm

$ 3.50

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2.33ct Yellow Citrine, Square, VVS-VS

2.33ct Yellow Citrine, Square, VVS-VS

8 x 8 mm (calibrated)

$ 13.63

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14.02ct Green Maw-Sit-Sit, Oval, Opaque

14.02ct Green Maw-Sit-Sit, Oval, Opaque

15.6 x 13.3 mm

$ 46.08

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0.78ct Yellow Color-Change Diaspore, Square, VVS-VS

0.78ct Yellow Color-Change Diaspore, Square, VVS-VS

5.3 x 5.1 mm

$ 32.22

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17.96ctw Multicolor Jasper, Pear Shape, Opaque

17.96ctw Multicolor Jasper, Pear Shape, Opaque

19.5 x 14.1 mm

$ 10.20

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1.24ct Green Tourmaline, Round, Transparent

1.24ct Green Tourmaline, Round, Transparent

6 mm (calibrated)

$ 20.55

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0.51ct Green Tourmaline, Baguette, VVS

0.51ct Green Tourmaline, Baguette, VVS

12 x 2.3 mm

$ 17.78

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

Great selection of gems at a reasonable price

Posted By Curt in July, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
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Overall Rating -> 10 star ratings

I had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

Posted By Mattick in May, 2026
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Overall Rating -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
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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 -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate
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