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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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45.08ct Multicolor Jasper, Oval, Opaque

45.08ct Multicolor Jasper, Oval, Opaque

30.1 x 25 mm

$ 23.22

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0.74ct Green Tourmaline, Emerald Cut, VVS

0.74ct Green Tourmaline, Emerald Cut, VVS

6.8 x 4.2 mm

$ 36.85

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1.15ct Yellow Morganite, Oval, VS

1.15ct Yellow Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 63.00

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1.72ct Pink Strawberry Quartz, Round, Translucent

1.72ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 13.19

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3.29ct Red Zircon, Oval, VS
Zircon Product Video (337146)

3.29ct Red Zircon, Oval, VS

9 x 7 mm (calibrated)

$ 158.60

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1.08ct Multicolor Labradorite, Pear Shape, Translucent

1.08ct Multicolor Labradorite, Pear Shape, Translucent

8.1 x 5.2 mm

$ 2.39

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12.25ct Brown Smoky Quartz, Emerald Cut, VVS

12.25ct Brown Smoky Quartz, Emerald Cut, VVS

16 x 16 mm (calibrated)

$ 51.40

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1.67ct Red Almandine Garnet, Baguette, VVS

1.67ct Red Almandine Garnet, Baguette, VVS

10 x 5 mm

$ 62.37

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0.83ctw White Rainbow Moonstone, Oval, Transparent

0.83ctw White Rainbow Moonstone, Oval, Transparent

6 x 4 mm (calibrated)

$ 27.29

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2.51ctw Red Pyrope Garnet, Marquise, VVS-VS

2.51ctw Red Pyrope Garnet, Marquise, VVS-VS

10.2 x 5.2 mm

$ 22.00

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2.75ct Orange Moonstone, Cushion, Translucent

2.75ct Orange Moonstone, Cushion, Translucent

9 x 7 mm (calibrated)

$ 5.48

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2.92ctw Multicolor Labradorite, Round, Translucent

2.92ctw Multicolor Labradorite, Round, Translucent

7 mm (calibrated)

$ 7.09

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7.01ct Purple Kunzite, Oval, VVS-VS
Kunzite Product Video (453579)

7.01ct Purple Kunzite, Oval, VVS-VS

14 x 9 mm (calibrated)

$ 160.01

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4.51ct Yellow Citrine, Oval, VVS-VS

4.51ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 27.07

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18.95ct White Howlite, Oval, Opaque

18.95ct White Howlite, Oval, Opaque

25 x 18 mm (calibrated)

$ 9.45

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18.59ct Brown Tiger'S Eye, Baguette, Opaque

18.59ct Brown Tiger'S Eye, Baguette, Opaque

20 x 15 mm (calibrated)

$ 18.52

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0.14ct Black Diamond, Square, Opaque

0.14ct Black Diamond, Square, Opaque

2.5 x 2.3 mm

$ 69.72

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31.03ct Gray Hematite, Pear Shape, Opaque

31.03ct Gray Hematite, Pear Shape, Opaque

24.1 x 17.1 mm

$ 30.26

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0.80ct Blue Kyanite, Round, VS

0.80ct Blue Kyanite, Round, VS

5 mm (calibrated)

$ 13.28

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5.98ct Yellow Citrine, Round, VVS

5.98ct Yellow Citrine, Round, VVS

12 mm (calibrated)

$ 45.87

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1.66ct Purple Tourmaline, Round, Transparent

1.66ct Purple Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 25.33

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1.22ct Purple Sapphire, Cushion, VVS-VS
Sapphire Product Video (448588)

1.22ct Purple Sapphire, Cushion, VVS-VS

6.4 x 5.1 mm

$ 644.25

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1.38ctw Multicolor Labradorite, Round, Translucent

1.38ctw Multicolor Labradorite, Round, Translucent

5.2 mm

$ 2.97

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4.86ct Brown Smoky Quartz, Round, Transparent

4.86ct Brown Smoky Quartz, Round, Transparent

12 mm (calibrated)

$ 20.38

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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

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
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
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
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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