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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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1.75ct Pink Strawberry Quartz, Round, Translucent

1.75ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 13.43

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0.82ct Yellow Color-Change Diaspore, Cushion, VS

0.82ct Yellow Color-Change Diaspore, Cushion, VS

7.1 x 4.4 mm

$ 26.95

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2.05ct White Rainbow Moonstone, Oval, Transparent

2.05ct White Rainbow Moonstone, Oval, Transparent

9 x 7 mm (calibrated)

$ 34.89

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3.44ctw Yellow Citrine, Emerald Cut, VS

3.44ctw Yellow Citrine, Emerald Cut, VS

8 x 6 mm (calibrated)

$ 26.39

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1.69ctw Yellow Citrine, Marquise, VS

1.69ctw Yellow Citrine, Marquise, VS

9.2 x 5 mm

$ 13.46

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5.78ctw Brown Tiger'S Eye, Oval, Opaque

5.78ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 5.76

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46.73ct Violet Charoite, Fancy, Opaque
Charoite Product Video (472236)

46.73ct Violet Charoite, Fancy, Opaque

31 x 25 mm

$ 75.26

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3.33ct Yellow Citrine, Square, VVS-VS
Citrine Product Video (508371)

3.33ct Yellow Citrine, Square, VVS-VS

9 x 9 mm (calibrated)

$ 21.31

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5.40ctw Yellow Citrine, Oval, VVS

5.40ctw Yellow Citrine, Oval, VVS

10 x 8 mm (calibrated)

$ 29.58

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0.06ct Black Diamond, Round, Opaque

0.06ct Black Diamond, Round, Opaque

2.5 mm (calibrated)

$ 29.03

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1.14ct Yellow Citrine, Round, VVS

1.14ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 9.08

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2.60ct Yellow Rutile Topaz, Pear Shape, Transparent

2.60ct Yellow Rutile Topaz, Pear Shape, Transparent

11.7 x 7.3 mm

$ 53.95

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1.09ct Brown Color-Change Garnet, Marquise, VS-SI

1.09ct Brown Color-Change Garnet, Marquise, VS-SI

8.7 x 4.5 mm

$ 87.08

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1.63ct Yellow Citrine, Trillion, VVS

1.63ct Yellow Citrine, Trillion, VVS

8 x 8 mm (calibrated)

$ 11.36

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1.40ct Orange Hessonite Garnet, Oval, VVS-VS

1.40ct Orange Hessonite Garnet, Oval, VVS-VS

7.5 x 6 mm

$ 21.40

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2.28ctw White Rainbow Moonstone, Square, Transparent

2.28ctw White Rainbow Moonstone, Square, Transparent

2.9 x 2.8 mm

$ 42.47

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68.00ct Green Jade, Fancy, Translucent

68.00ct Green Jade, Fancy, Translucent

42.6 x 19.2 mm

$ 38.60

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1.35ct Orange Zircon, Round, VS

1.35ct Orange Zircon, Round, VS

6 mm (calibrated)

$ 29.58

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37.05ct Yellow Obsidian, Oval, Opaque

37.05ct Yellow Obsidian, Oval, Opaque

40.1 x 21.2 mm

$ 40.60

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1.53ct Yellow Citrine, Round, VVS

1.53ct Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 12.19

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1.39ct Orange Hessonite Garnet, Oval, VS

1.39ct Orange Hessonite Garnet, Oval, VS

7.3 x 5.9 mm

$ 27.69

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8.84ctw Violet Amethyst, Oval, Transparent

8.84ctw Violet Amethyst, Oval, Transparent

12 x 8 mm (calibrated)

$ 48.42

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26.63ct Violet Lepidolite, Fancy, Opaque

26.63ct Violet Lepidolite, Fancy, Opaque

37.9 x 9.5 mm

$ 2.65

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60.15ctw Multicolor Labradorite, Round, Translucent

60.15ctw Multicolor Labradorite, Round, Translucent

25.3 mm

$ 78.43

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 -> 9 star ratings

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman 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

Overall Rating -> 10 star ratings

Easy to conduct search, good amount of stock to select from along with variety of prices.

Posted By Que in June, 2025
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Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate
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