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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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Bi-color Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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1.43ct Yellow Beryl, Round, VVS

1.43ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 28.49

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1.98ct Yellow Citrine, Trillion, VVS-VS

1.98ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 10.72

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7.08ct Turquoise Fluorite, Oval, Transparent

7.08ct Turquoise Fluorite, Oval, Transparent

12 x 10 mm (calibrated)

$ 27.67

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33.22ct Violet Amethyst, Round, VVS
Amethyst Product Video (734716)

33.22ct Violet Amethyst, Round, VVS

23.1 mm

$ 220.58

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1.11ct Brown Color-Change Garnet, Round, VS

1.11ct Brown Color-Change Garnet, Round, VS

6 mm (calibrated)

$ 88.68

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2.07ct Turquoise Fluorite, Pear Shape, Transparent

2.07ct Turquoise Fluorite, Pear Shape, Transparent

9.3 x 6.4 mm

$ 8.25

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4.03ct Multicolor Fire Agate, Trillion, Translucent

4.03ct Multicolor Fire Agate, Trillion, Translucent

12.5 x 10.9 mm

$ 35.06

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23.98ct Violet Lepidolite, Fancy, Opaque

23.98ct Violet Lepidolite, Fancy, Opaque

39.3 x 8.5 mm

$ 2.39

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1.76ct Pink Strawberry Quartz, Round, Translucent

1.76ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 13.50

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8.41ct Brown Smoky Quartz, Emerald Cut, VVS

8.41ct Brown Smoky Quartz, Emerald Cut, VVS

12 x 12 mm (calibrated)

$ 10.41

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1.73ct Green Prehnite, Oval, Transparent

1.73ct Green Prehnite, Oval, Transparent

8.5 x 7.1 mm

$ 9.48

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0.95ctw Multicolor Opal, Oval, Transparent

0.95ctw Multicolor Opal, Oval, Transparent

7 x 5 mm (calibrated)

$ 236.55

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6.17ct Brown Tiger'S Eye, Baguette, Opaque

6.17ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 3.38

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11.73ct Blue Color-Change Fluorite, Round, VS

11.73ct Blue Color-Change Fluorite, Round, VS

14 mm (calibrated)

$ 257.03

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0.21ct Red Spinel, Square, VS

0.21ct Red Spinel, Square, VS

3.3 x 3.1 mm

$ 17.43

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0.53ct Yellow Citrine, Marquise, VVS

0.53ct Yellow Citrine, Marquise, VVS

8 x 4 mm (calibrated)

$ 3.69

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5.34ct Pink Rose Quartz, Emerald Cut, Transparent

5.34ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 29.25

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1.56ct Pink Tourmaline, Emerald Cut, VVS
Tourmaline Product Video (518933)

1.56ct Pink Tourmaline, Emerald Cut, VVS

10.9 x 4.3 mm

$ 102.55

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29.41ctw Multicolor Fossil Coral, Cushion, Opaque

29.41ctw Multicolor Fossil Coral, Cushion, Opaque

20.1 x 14.1 mm

$ 32.22

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1.74ct Yellow Beryl, Oval, VVS

1.74ct Yellow Beryl, Oval, VVS

9.4 x 7 mm

$ 43.33

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1.13ct Orange Moonstone, Cushion, Translucent

1.13ct Orange Moonstone, Cushion, Translucent

6 x 6 mm (calibrated)

$ 2.25

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57.19ct Multicolor Jasper, Oval, Opaque

57.19ct Multicolor Jasper, Oval, Opaque

32.8 x 24.8 mm

$ 41.98

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20.29ct White Rainbow Moonstone, Pear Shape, Transparent

20.29ct White Rainbow Moonstone, Pear Shape, Transparent

21.3 x 15.9 mm

$ 161.67

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2.71ctw Yellow Citrine, Pear Shape, VVS-VS
Citrine Product Video (317784)

2.71ctw Yellow Citrine, Pear Shape, VVS-VS

8 x 5 mm (calibrated)

$ 17.15

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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

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate
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