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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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Yellow Untreated Gemstones
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0.51ct Yellow Sphalerite, Round, SI-I1

0.51ct Yellow Sphalerite, Round, SI-I1

4.5 mm (calibrated)

$ 25.40

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4.22ctw Red Pyrope Garnet, Marquise, VVS-VS

4.22ctw Red Pyrope Garnet, Marquise, VVS-VS

12.2 x 6.1 mm

$ 36.99

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18.54ct Multicolor Agate, Oval, Opaque

18.54ct Multicolor Agate, Oval, Opaque

20 x 17.4 mm

$ 18.47

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7.52ct Yellow Citrine, Emerald Cut, VVS

7.52ct Yellow Citrine, Emerald Cut, VVS

14 x 10 mm (calibrated)

$ 57.67

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33.81ct Multicolor Jasper, Pear Shape, Opaque

33.81ct Multicolor Jasper, Pear Shape, Opaque

29.1 x 25.1 mm

$ 20.73

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0.66ct Yellow Color-Change Diaspore, Square, VVS-VS

0.66ct Yellow Color-Change Diaspore, Square, VVS-VS

5.5 x 5.4 mm

$ 23.17

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2.84ctw Brown Color-Change Garnet, Oval, VVS-VS
Color-Change Garnet Product Video (720601)

2.84ctw Brown Color-Change Garnet, Oval, VVS-VS

7.2 x 5.3 mm

$ 226.89

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0.80ct Yellow Color-Change Diaspore, Oval, VVS-VS

0.80ct Yellow Color-Change Diaspore, Oval, VVS-VS

5.6 x 4.9 mm

$ 28.08

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0.49ct Orange Spessartite Garnet, Oval, VS

0.49ct Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 17.08

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1.04ct Yellow Chrysoberyl, Oval, VS
Chrysoberyl Product Video (366385)

1.04ct Yellow Chrysoberyl, Oval, VS

6.7 x 5.6 mm

$ 101.06

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7.07ctw Yellow Citrine, Oval, VVS-VS

7.07ctw Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 49.29

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5.35ct Pink Rose Quartz, Emerald Cut, Transparent

5.35ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 29.32

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2.67ctw Red Pyrope Garnet, Square, VS

2.67ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 20.48

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2.17ct Orange Sphalerite, Oval, SI-I1

2.17ct Orange Sphalerite, Oval, SI-I1

8 x 6.4 mm

$ 108.07

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10.79ctw Pink Morganite, Oval, Translucent

10.79ctw Pink Morganite, Oval, Translucent

14 x 10 mm (calibrated)

$ 118.22

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2.79ct Violet Amethyst, Trillion, VS

2.79ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 20.91

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2.22ct Orange Moonstone, Square, Translucent

2.22ct Orange Moonstone, Square, Translucent

7 x 7 mm (calibrated)

$ 4.44

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1.86ct Orange Moonstone, Trillion, Translucent

1.86ct Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 3.70

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25.84ct Gray Hematite, Baguette, Opaque

25.84ct Gray Hematite, Baguette, Opaque

18.8 x 13.4 mm

$ 25.20

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2.59ct White Moonstone, Oval, Translucent
Moonstone Product Video (528125)

2.59ct White Moonstone, Oval, Translucent

10 x 8 mm (calibrated)

$ 22.70

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5.68ct Yellow Citrine, Emerald Cut, VVS-VS

5.68ct Yellow Citrine, Emerald Cut, VVS-VS

12 x 8 mm (calibrated)

$ 43.57

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18.64ct Green Amazonite, Square, Opaque

18.64ct Green Amazonite, Square, Opaque

19 x 19 mm (calibrated)

$ 18.93

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37.59ct Multicolor Rhodochrosite, Oval, Opaque

37.59ct Multicolor Rhodochrosite, Oval, Opaque

31.7 x 16.2 mm

$ 99.25

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4.40ctw Red Pyrope Garnet, Square, VS

4.40ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 33.75

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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 site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate

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

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername 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

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

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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