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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
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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1.13ct Purple Spinel, Cushion, VVS-VS
Spinel Product Video (754861)

1.13ct Purple Spinel, Cushion, VVS-VS

6.6 x 5.4 mm

$ 112.55

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3.44ctw Orange Moonstone, Oval, Translucent

3.44ctw Orange Moonstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 6.88

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27.95ct Green Bloodstone, Oval, Opaque

27.95ct Green Bloodstone, Oval, Opaque

22.8 x 18.4 mm

$ 41.77

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5.35ct Multicolor Agate, Round, Opaque

5.35ct Multicolor Agate, Round, Opaque

11 mm (calibrated)

$ 9.06

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25.24ct Green Aventurine, Fancy, Opaque

25.24ct Green Aventurine, Fancy, Opaque

36.6 x 10.6 mm

$ 2.09

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2.29ct Yellow Citrine, Trillion, VVS-VS

2.29ct Yellow Citrine, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 12.39

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2.63ctw Red Pyrope Garnet, Square, VS

2.63ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 20.17

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1.95ct Pink Morganite, Oval, VS

1.95ct Pink Morganite, Oval, VS

9.4 x 7 mm

$ 149.55

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1.15ct Yellow Morganite, Oval, VS

1.15ct Yellow Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 63.00

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3.21ct Yellow Citrine, Oval, VVS

3.21ct Yellow Citrine, Oval, VVS

13 x 9 mm (calibrated)

$ 19.46

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0.78ct Orange Hessonite Garnet, Pear Shape, VS-SI

0.78ct Orange Hessonite Garnet, Pear Shape, VS-SI

6.8 x 4.8 mm

$ 17.09

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5.25ct Pink Morganite, Round, Transparent

5.25ct Pink Morganite, Round, Transparent

11 mm (calibrated)

$ 57.52

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1.33ct Green Sphene, Oval, Transparent

1.33ct Green Sphene, Oval, Transparent

6.4 x 6.3 mm

$ 7.29

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2.04ct Yellow Beryl, Oval, VS

2.04ct Yellow Beryl, Oval, VS

10 x 8 mm (calibrated)

$ 50.80

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4.14ct Yellow Apatite, Oval, VS

4.14ct Yellow Apatite, Oval, VS

12 x 10 mm (calibrated)

$ 136.07

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5.06ct Multicolor Fire Agate, Oval, Opaque

5.06ct Multicolor Fire Agate, Oval, Opaque

10.9 x 10 mm

$ 38.90

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9.62ct Brown Tiger'S Eye, Oval, Opaque

9.62ct Brown Tiger'S Eye, Oval, Opaque

18 x 13 mm (calibrated)

$ 9.58

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1.29ct Multicolor Opal, Pear Shape, Transparent

1.29ct Multicolor Opal, Pear Shape, Transparent

11.8 x 7 mm

$ 49.47

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4.59ct Pink Strawberry Quartz, Oval, Translucent

4.59ct Pink Strawberry Quartz, Oval, Translucent

12 x 10 mm (calibrated)

$ 54.86

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26.09ct Black Tourmaline, Oval, Opaque

26.09ct Black Tourmaline, Oval, Opaque

26.1 x 17.6 mm

$ 129.93

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3.02ct Violet Amethyst, Trillion, VVS-VS

3.02ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 24.06

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0.72ct Yellow Citrine, Trillion, VS

0.72ct Yellow Citrine, Trillion, VS

6 x 6 mm (calibrated)

$ 5.98

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1.51ctw Yellow Citrine, Heart, VVS-VS

1.51ctw Yellow Citrine, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 10.52

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1.72ct Pink Strawberry Quartz, Oval, Translucent

1.72ct Pink Strawberry Quartz, Oval, Translucent

9 x 7 mm (calibrated)

$ 13.19

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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

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

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate

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

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate
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