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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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1.75ct Orange Moonstone, Marquise, Translucent

10.2 x 5.5 mm

$ 3.49

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4.63ct Yellow Citrine, Emerald Cut, VVS-VS

12 x 8 mm (calibrated)

$ 35.51

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1.52ct Pink Morganite, Round, VS

7.5 mm (calibrated)

$ 83.27

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2.79ctw Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 17.06

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1.64ctw Multicolor Opal, Oval, Transparent

7 x 5 mm (calibrated)

$ 59.89

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1.69ct Orange Hessonite Garnet, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 33.66

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2.98ct Turquoise Grandidierite, Oval, Translucent

10 x 7.4 mm

$ 148.40

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2.15ctw Orange Spessartite Garnet, Round, VS

4.5 mm (calibrated)

$ 73.02

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1.34ct Green Tourmaline, Emerald Cut, VVS-VS

17.7 x 3.1 mm

$ 28.34

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2.81ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 12.31

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45.93ct Multicolor Agate, Oval, Opaque

23.4 x 20.2 mm

$ 45.75

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1.98ct Orange Hessonite Garnet, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 35.50

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1.08ct Yellow Citrine, Trillion, VVS-VS

7 x 7 mm (calibrated)

$ 8.28

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12.69ct Multicolor Agate, Round, Opaque

13 mm (calibrated)

$ 12.64

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52.74ct Multicolor Rhodochrosite, Oval, Translucent

34 x 23.5 mm

$ 69.34

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8.14ctw Violet Amethyst, Oval, Transparent

12 x 8 mm (calibrated)

$ 44.59

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16.81ct Multicolor Jasper, Fancy, Opaque

18.2 x 18.7 mm

$ 14.18

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3.68ct Pink Strawberry Quartz, Oval, Translucent

13.1 x 9.5 mm

$ 22.10

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1.57ct Orange Hessonite Garnet, Emerald Cut, VS-SI

6 x 6 mm (calibrated)

$ 30.97

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18.63ct Green Maw-Sit-Sit, Oval, Opaque

20 x 14.4 mm

$ 61.24

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1.05ct Pink Morganite, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 69.02

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3.55ct Pink Strawberry Quartz, Round, Translucent

11 mm (calibrated)

$ 27.23

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1.05ct Brown Kornerupine, Pear Shape, VVS-VS

8 x 5 mm (calibrated)

$ 57.52

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1.20ct Green Chrysoprase, Pear Shape, Translucent

8 x 6 mm (calibrated)

$ 9.96

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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 -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate

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 -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

hassle free experience.

Posted By Jhidron in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

It was fine

Posted By Na in April, 2026
Source: Bizrate
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