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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
Untreated Gemstones Size
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9.44ct Multicolor Fire Agate, Fancy, Opaque

9.44ct Multicolor Fire Agate, Fancy, Opaque

17.6 x 11.1 mm

$ 74.05

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1.09ct White Rainbow Moonstone, Oval, Transparent

1.09ct White Rainbow Moonstone, Oval, Transparent

8 x 6 mm (calibrated)

$ 18.56

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17.02ct Multicolor Jasper, Oval, Opaque

17.02ct Multicolor Jasper, Oval, Opaque

24.4 x 19.8 mm

$ 18.64

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2.24ct Yellow Citrine, Trillion, VVS

2.24ct Yellow Citrine, Trillion, VVS

9 x 9 mm (calibrated)

$ 14.72

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0.87ct Green Peridot, Pear Shape, VVS-VS

0.87ct Green Peridot, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 6.07

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2.94ct Yellow Citrine, Oval, VVS

2.94ct Yellow Citrine, Oval, VVS

11 x 9 mm (calibrated)

$ 16.10

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7.14ct Brown Smoky Quartz, Emerald Cut, VVS

7.14ct Brown Smoky Quartz, Emerald Cut, VVS

12 x 12 mm (calibrated)

$ 27.24

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34.47ctw Multicolor Fossil Coral, Fancy, Opaque

34.47ctw Multicolor Fossil Coral, Fancy, Opaque

23 x 13.3 mm

$ 37.77

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56.13ct Green Uvarovite Garnet Drusy, Fancy, Opaque

56.13ct Green Uvarovite Garnet Drusy, Fancy, Opaque

48.1 x 25.3 mm

$ 83.86

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1.31ct Orange Sunstone, Oval, Translucent

1.31ct Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 21.70

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3.15ctw White Topaz, Cushion, VVS-VS

3.15ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 17.26

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3.27ctw Yellow Citrine, Emerald Cut, VS

3.27ctw Yellow Citrine, Emerald Cut, VS

8 x 6 mm (calibrated)

$ 26.05

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22.62ct Green Jade, Fancy, Translucent

22.62ct Green Jade, Fancy, Translucent

24.9 x 15.8 mm

$ 14.13

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1.94ct Pink Strawberry Quartz, Round, Translucent

1.94ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 14.88

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41.28ct Gray Hematite, Oval, Opaque

41.28ct Gray Hematite, Oval, Opaque

23.4 x 17.2 mm

$ 40.25

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7.96ct Yellow Citrine, Oval, VVS

7.96ct Yellow Citrine, Oval, VVS

15.4 x 11.4 mm

$ 61.05

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4.38ct Turquoise Aquamarine, Emerald Cut, Translucent

4.38ct Turquoise Aquamarine, Emerald Cut, Translucent

11.6 x 8.5 mm

$ 90.89

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0.65ct Yellow Beryl, Oval, VS

0.65ct Yellow Beryl, Oval, VS

7 x 5 mm (calibrated)

$ 12.41

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7.28ct Yellow Apatite, Oval, VS-SI

7.28ct Yellow Apatite, Oval, VS-SI

14.8 x 11.4 mm

$ 239.28

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4.32ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (471973)

4.32ct Turquoise Grandidierite, Oval, Translucent

11.2 x 8.5 mm

$ 301.19

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0.05ct Black Diamond, Round, Opaque

0.05ct Black Diamond, Round, Opaque

2.2 mm (calibrated)

$ 16.28

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26.40ct Multicolor Jasper, Oval, Opaque

26.40ct Multicolor Jasper, Oval, Opaque

44.1 x 13.1 mm

$ 22.27

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1.13ct Purple Spinel, Cushion, VVS
Spinel Product Video (744424)

1.13ct Purple Spinel, Cushion, VVS

7 x 5 mm (calibrated)

$ 112.55

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1.12ct Yellow Sphene, Oval, Transparent

1.12ct Yellow Sphene, Oval, Transparent

6.7 x 5.9 mm

$ 5.58

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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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Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
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Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
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Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
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Overall Rating -> 10 star ratings

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
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Overall Rating -> 10 star ratings

Very pleasant

Posted By Varun in June, 2026
Source: Bizrate
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