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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
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Yellow Untreated Gemstones
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4.60ct Multicolor Rainbow Pyrite, Marquise, Opaque

19.4 x 7.3 mm

$ 11.91

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22.09ct Multicolor Jasper, Pear Shape, Opaque

25.6 x 16.8 mm

$ 12.54

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1.08ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 9.68

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3.43ct Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 23.91

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80.40ctw Gray Hematite, Pear Shape, Opaque

24.8 x 19.5 mm

$ 78.40

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2.29ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 15.97

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2.03ct Orange Hessonite Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 31.02

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2.36ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 6 mm (calibrated)

$ 39.69

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3.58ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 26.85

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0.03ct Black Diamond, Round, Opaque

2 mm (calibrated)

$ 10.27

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1.07ct White Rainbow Moonstone, Oval, Transparent

8 x 6 mm (calibrated)

$ 35.18

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2.18ct Green Tourmaline, Emerald Cut, VVS-VS

15.3 x 4.9 mm

$ 59.71

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1.09ct Black Diamond, Square, Opaque

4.6 x 4.4 mm

$ 620.95

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8.66ct Multicolor Pietersite, Oval, Opaque

16.3 x 11.3 mm

$ 20.96

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4.34ctw Green Tsavorite Garnet, Pear Shape, VS

5 x 3 mm (calibrated)

$ 237.75

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104.98ct Blue Sodalite, Square, Opaque

27.2 x 27.1 mm

$ 87.13

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7.09ct Yellow Citrine, Oval, VVS

15 x 10 mm (calibrated)

$ 46.60

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0.49ct White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 2.24

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6.15ct Black Star Diopside, Oval, Opaque

11 x 9 mm (calibrated)

$ 30.63

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3.09ct Turquoise Grandidierite, Oval, Translucent

9.4 x 8.2 mm

$ 236.98

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5.59ct Yellow Citrine, Round, VVS

12 mm (calibrated)

$ 42.87

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0.56ct Purple Spinel, Cushion, VVS

4.7 x 4.1 mm

$ 27.89

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15.23ct Multicolor Jasper, Cushion, Opaque

23.8 x 14.1 mm

$ 12.59

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1.05ct Yellow Beryl, Emerald Cut, VVS-VS

6.9 x 5.2 mm

$ 23.01

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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

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 am filling a small treasure chest and picked a nice amethyst.

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

So far So good

Posted By VH-1 in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
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Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate
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