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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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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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33.08ct Multicolor Labradorite, Round, Translucent

33.08ct Multicolor Labradorite, Round, Translucent

25.2 mm

$ 60.96

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16.47ct Green Amazonite, Oval, Opaque

16.47ct Green Amazonite, Oval, Opaque

20 x 15 mm (calibrated)

$ 16.73

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3.45ct Violet Amethyst, Pear Shape, VS

3.45ct Violet Amethyst, Pear Shape, VS

13 x 9 mm (calibrated)

$ 26.46

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1.75ct Orange Zircon, Oval, VVS-VS

1.75ct Orange Zircon, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 38.25

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2.17ct Orange Moonstone, Square, Translucent

2.17ct Orange Moonstone, Square, Translucent

7 x 7 mm (calibrated)

$ 4.34

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3.75ct Yellow Citrine, Square, VS

3.75ct Yellow Citrine, Square, VS

9 x 9 mm (calibrated)

$ 28.77

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4.80ct Pink Kunzite, Cushion, VS

4.80ct Pink Kunzite, Cushion, VS

10 x 8 mm (calibrated)

$ 119.52

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1.12ct Yellow Beryl, Cushion, VVS

1.12ct Yellow Beryl, Cushion, VVS

8.6 x 6.5 mm

$ 26.78

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2.64ct Pink Strawberry Quartz, Oval, Transparent

2.64ct Pink Strawberry Quartz, Oval, Transparent

9 x 7 mm (calibrated)

$ 13.15

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3.27ct Brown Rutile Quartz, Round, Transparent

3.27ct Brown Rutile Quartz, Round, Transparent

9 mm (calibrated)

$ 10.75

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2.39ctw Red Pyrope Garnet, Marquise, VVS-VS

2.39ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5 mm

$ 20.95

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2.58ct Yellow Citrine, Pear Shape, VS-SI

2.58ct Yellow Citrine, Pear Shape, VS-SI

11.1 x 8.2 mm

$ 19.79

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3.03ctw Yellow Sillimanite, Oval, VVS-VS

3.03ctw Yellow Sillimanite, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 116.19

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0.91ct Yellow Color-Change Diaspore, Emerald Cut, VS

0.91ct Yellow Color-Change Diaspore, Emerald Cut, VS

7.1 x 4 mm

$ 44.87

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28.65ctw Blue Lazulite, Fancy, Opaque

28.65ctw Blue Lazulite, Fancy, Opaque

27.5 x 17.7 mm

$ 28.06

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1.83ctw Green Peridot, Round, VS

1.83ctw Green Peridot, Round, VS

4 mm (calibrated)

$ 20.05

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2.18ctw Red Pyrope Garnet, Marquise, VVS-VS

2.18ctw Red Pyrope Garnet, Marquise, VVS-VS

10.2 x 5.1 mm

$ 19.11

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38.00ct Red Star Garnet, Oval, Opaque

38.00ct Red Star Garnet, Oval, Opaque

20 x 15 mm (calibrated)

$ 37.47

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16.79ct White Rainbow Moonstone, Oval, Transparent

16.79ct White Rainbow Moonstone, Oval, Transparent

18.7 x 14.1 mm

$ 250.84

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40.19ct Green Maw-Sit-Sit, Square, Opaque
Maw-Sit-Sit Product Video (476852)

40.19ct Green Maw-Sit-Sit, Square, Opaque

17 x 17 mm (calibrated)

$ 132.10

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2.78ct Yellow Citrine, Square, VS

2.78ct Yellow Citrine, Square, VS

8.5 x 8.4 mm

$ 15.23

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5.06ctw Yellow Citrine, Heart, VS

5.06ctw Yellow Citrine, Heart, VS

7 x 7 mm (calibrated)

$ 33.27

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6.37ct Black Tourmaline, Emerald Cut, Opaque

6.37ct Black Tourmaline, Emerald Cut, Opaque

12.9 x 8.5 mm

$ 31.72

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7.85ctw Violet Amethyst, Oval, Transparent

7.85ctw Violet Amethyst, Oval, Transparent

11 x 9 mm (calibrated)

$ 31.04

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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

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 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

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

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate
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