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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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0.97ct Yellow Citrine, Cushion, VVS-VS

8 x 6 mm (calibrated)

$ 7.25

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1.21ct Multicolor Opal, Pear Shape, Transparent

10 x 8 mm (calibrated)

$ 29.17

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1.98ct Yellow Citrine, Square, VS

7 x 7 mm (calibrated)

$ 13.75

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2.53ctw Pink Strawberry Quartz, Oval, Translucent

8 x 6 mm (calibrated)

$ 15.47

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1.44ct Multicolor Opal, Oval, Translucent

10 x 8 mm (calibrated)

$ 66.27

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6.97ct Turquoise Hemimorphite Druzy, Fancy, Opaque

14.2 x 11.5 mm

$ 114.55

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2.96ct Red Zircon, Oval, VVS-VS

9.5 x 6.9 mm

$ 129.39

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0.73ct Green Peridot, Oval, VVS-VS

7 x 5 mm (calibrated)

$ 10.18

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8.97ct Pink Rose Quartz, Emerald Cut, Transparent

13 x 13 mm (calibrated)

$ 49.14

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5.13ctw Brown Rutile Topaz, Pear Shape, Transparent

11 x 7.9 mm

$ 106.45

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1.44ct Pink Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 24.68

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2.98ct Yellow Rutile Topaz, Oval, Transparent

12.3 x 6.8 mm

$ 61.84

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1.38ct Green Tourmaline, Emerald Cut, VVS-VS

18.2 x 3.2 mm

$ 33.27

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3.40ct Pink Strawberry Quartz, Oval, Translucent

10 x 8 mm (calibrated)

$ 26.08

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26.42ctw Multicolor Fossil Coral, Oval, Opaque

18.7 x 12.7 mm

$ 34.16

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11.88ct Multicolor Quartz With Marcasite, Oval, Transparent

19.5 x 12.2 mm

$ 78.09

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4.38ct Orange Spessartite Garnet, Oval, Transparent

10 x 8 mm (calibrated)

$ 109.06

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10.24ctw Multicolor Pietersite, Oval, Opaque

17.9 x 13.6 mm

$ 23.96

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1.39ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.17

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3.43ct Multicolor Pietersite, Round, Opaque

12 mm (calibrated)

$ 8.30

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1.71ct Orange Hessonite Garnet, Emerald Cut, VS

7.3 x 5.9 mm

$ 25.43

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3.02ct Yellow Citrine, Pear Shape, VVS-VS

12 x 10 mm (calibrated)

$ 18.96

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1.52ct Green Tourmaline, Emerald Cut, VS

15.5 x 3.5 mm

$ 36.64

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3.29ct Purple Kunzite, Emerald Cut, VVS-VS

8.1 x 6.4 mm

$ 81.92

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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

good navigation and simple interface.

Posted By Dave in April, 2026
Source: Bizrate

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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Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

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

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

Posted By Wayne in July, 2025
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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
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Overall Rating -> 10 star ratings

Good. I ts very user friendly.

Posted By Shalini in June, 2025
Source: Bizrate
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