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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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Yellow Untreated Gemstones
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0.55ct Yellow Citrine, Heart, VVS

5.9 x 5.7 mm

$ 4.38

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1.75ct Green Tourmaline, Emerald Cut, VVS-VS

17.7 x 3.8 mm

$ 31.96

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11.37ct Pink Rose Quartz, Emerald Cut, Transparent

14 x 14 mm (calibrated)

$ 62.29

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6.44ct Brown Rutile Quartz, Oval, Transparent

13.3 x 9.4 mm

$ 17.64

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4.64ct Orange Sunstone, Oval, Translucent

12 x 10 mm (calibrated)

$ 28.13

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1.63ct Brown Smoky Quartz, Round, VVS-VS

7.5 mm (calibrated)

$ 7.14

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9.19ct Multicolor Agate, Oval, Translucent

14 x 12 mm (calibrated)

$ 18.31

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23.31ct Multicolor Labradorite, Oval, Opaque

24.6 x 19.3 mm

$ 20.90

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3.98ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 18.17

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1.01ct Purple Spinel, Cushion, VS

5.7 x 5.7 mm

$ 120.72

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0.64ct Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 5.10

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1.89ctw Yellow Zircon, Oval, VVS-VS

6 x 5 mm

$ 47.06

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2.23ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 13.63

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0.87ctw Green Peridot, Oval, Transparent

6.2 x 4.2 mm

$ 15.60

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5.51ct Multicolor Pietersite, Marquise, Opaque

19.1 x 7.9 mm

$ 13.50

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6.95ct Black Nuummite, Oval, Opaque

13.4 x 11.6 mm

$ 30.67

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1.96ct Yellow Citrine, Round, VVS-VS

8 mm (calibrated)

$ 15.62

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19.58ct Multicolor Jasper, Pear Shape, Opaque

35.5 x 14.1 mm

$ 21.46

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0.57ct Yellow Color-Change Diaspore, Cushion, VVS

5.3 x 5 mm

$ 30.09

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2.21ct Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 4.89

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12.84ct Bi-Color Ametrine, Oval, VVS-VS

19 x 12.6 mm

$ 84.40

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0.97ct Yellow Citrine, Square, VS

6 x 6 mm (calibrated)

$ 6.76

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0.94ct Yellow Morganite, Oval, VS

8 x 6 mm (calibrated)

$ 51.49

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12.53ctw Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 13.73

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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

Had a great experience and the prices are great

Posted By BuBx99 in November, 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
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Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
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Overall Rating -> 10 star ratings

It was good. There was a large selection at prices I could afford.

Posted By Zorah in February, 2026
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Overall Rating -> 9 star ratings

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
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Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
Source: Bizrate
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