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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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Yellow Untreated Gemstones
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4.74ct White Dendritic Agate, Pear Shape, Opaque

14.5 x 10.5 mm

$ 3.78

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0.13ct Pink Morganite, Round, VS

3.5 mm (calibrated)

$ 5.40

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3.17ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 23.77

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71.86ct Brown Tiger'S Eye Matrix, Fancy, Opaque

30.7 x 29.9 mm

$ 40.79

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4.81ct Yellow Rutile Quartz, Oval, Transparent

13 x 9 mm (calibrated)

$ 13.16

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3.74ct Multicolor Fire Agate, Oval, Opaque

12.2 x 9.4 mm

$ 31.91

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22.47ct Turquoise Grandidierite, Oval, Translucent

21 x 15.5 mm

$ 1,723.27

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0.81ct Yellow Sphene, Oval, Transparent

5.7 x 5 mm

$ 4.03

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1.26ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 8.37

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25.49ct White Dendritic Agate, Round, Translucent

23.1 mm

$ 50.78

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1.53ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 11.74

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4.40ct Yellow Citrine, Oval, VS

13.2 x 9.7 mm

$ 33.75

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12.39ct Gray Jadeite, Oval, Opaque

17.9 x 11 mm

$ 40.73

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5.83ctw Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 46.46

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2.41ctw Red Pyrope Garnet, Marquise, VVS-VS

10 x 5.2 mm

$ 21.12

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0.82ct Yellow Citrine, Marquise, VVS-VS

9.1 x 5 mm

$ 6.53

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2.27ct Yellow Citrine, Square, VVS-VS

7.7 x 7.7 mm

$ 13.28

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3.82ctw Orange Hessonite Garnet, Oval, VS-SI

8.2 x 6.7 mm

$ 63.69

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2.28ct Green Tourmaline, Emerald Cut, VVS

22.2 x 3.6 mm

$ 62.45

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3.17ct Orange Sunstone, Round, Translucent

9 mm (calibrated)

$ 18.76

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4.76ct Green Prehnite, Fancy, Translucent

14 x 9 mm (calibrated)

$ 7.82

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1.05ct Violet Spinel, Oval, VS-SI

6.7 x 5.6 mm

$ 108.17

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0.59ct Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 14.69

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0.54ctw Blue Kyanite, Round, VS-SI

3.7 mm

$ 9.68

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 -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The site provided lots of detail, factual data, and good photos. I also like the availability of searching by price range as well as by the type of stone.

Posted By SLIntuitive Donna in July, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
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Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
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Overall Rating -> 10 star ratings

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
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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
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