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Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
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0.51ct Blue Kyanite, Round, SI

0.51ct Blue Kyanite, Round, SI

4.2 mm

$ 12.70

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1.13ct Orange Moonstone, Cushion, Translucent

1.13ct Orange Moonstone, Cushion, Translucent

6 x 6 mm (calibrated)

$ 2.25

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1.17ct Red Rhodolite Garnet, Emerald Cut, VS

1.17ct Red Rhodolite Garnet, Emerald Cut, VS

6.1 x 4.9 mm

$ 43.70

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9.66ctw Yellow Citrine, Oval, VVS-VS

9.66ctw Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 74.09

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21.79ct Green Bloodstone, Oval, Opaque

21.79ct Green Bloodstone, Oval, Opaque

21.7 x 16.1 mm

$ 32.56

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1.34ct Purple Rhodolite Garnet, Oval, VS

1.34ct Purple Rhodolite Garnet, Oval, VS

8 x 5.4 mm

$ 46.71

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1.57ct Purple Tourmaline, Oval, Transparent

1.57ct Purple Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 51.60

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1.82ct Green Tourmaline, Oval, VVS-VS
Tourmaline Product Video (747782)

1.82ct Green Tourmaline, Oval, VVS-VS

7.3 x 6.7 mm

$ 211.48

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4.29ctw Red Pyrope Garnet, Square, VVS-VS

4.29ctw Red Pyrope Garnet, Square, VVS-VS

7 x 7 mm (calibrated)

$ 31.33

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1.03ct Green Tourmaline, Emerald Cut, VVS

1.03ct Green Tourmaline, Emerald Cut, VVS

13.9 x 2.9 mm

$ 28.22

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26.88ct Violet Amethyst, Oval, IF

26.88ct Violet Amethyst, Oval, IF

20.1 x 17.2 mm

$ 206.16

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24.43ct Violet Amethyst, Pear Shape, VVS
Amethyst Product Video (508962)

24.43ct Violet Amethyst, Pear Shape, VVS

21.8 x 16 mm

$ 187.36

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2.79ct Violet Amethyst, Trillion, VS

2.79ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 22.23

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2.41ct Orange Hessonite Garnet, Oval, VS

2.41ct Orange Hessonite Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 48.01

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5.38ct Multicolor Labradorite, Marquise, Translucent

5.38ct Multicolor Labradorite, Marquise, Translucent

16 x 8 mm (calibrated)

$ 11.89

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22.29ct Multicolor Peanut Wood, Oval, Opaque

22.29ct Multicolor Peanut Wood, Oval, Opaque

29.1 x 18.5 mm

$ 13.31

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0.58ct Green Peridot, Marquise, VS

0.58ct Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 8.67

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0.88ctw Green Peridot, Pear Shape, VVS-VS

0.88ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.71

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0.88ct Orange Zircon, Oval, VS

0.88ct Orange Zircon, Oval, VS

5.9 x 4.8 mm

$ 13.15

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4.89ct Yellow Rutile Quartz, Round, Transparent

4.89ct Yellow Rutile Quartz, Round, Transparent

11 mm (calibrated)

$ 13.35

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30.35ct Multicolor Jasper, Cushion, Opaque

30.35ct Multicolor Jasper, Cushion, Opaque

30 x 22 mm (calibrated)

$ 22.27

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1.74ct Green Sphene, Oval, Transparent

1.74ct Green Sphene, Oval, Transparent

7.3 x 6 mm

$ 8.67

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2.30ctw Red Rhodolite Garnet, Square, VS

2.30ctw Red Rhodolite Garnet, Square, VS

4.7 x 4.6 mm

$ 20.14

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17.31ctw Multicolor Labradorite, Round, Translucent

17.31ctw Multicolor Labradorite, Round, Translucent

16 mm (calibrated)

$ 37.93

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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!

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It's mostly good, only some item's are easier to find through the search than the menu

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I was able to find what I've been looking for.

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Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

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Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 2025
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