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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
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

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Bi-color Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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5.88ctw White Moonstone, Round, Translucent

5.88ctw White Moonstone, Round, Translucent

9 mm (calibrated)

$ 16.10

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0.95ct Yellow Morganite, Cushion, VS

0.95ct Yellow Morganite, Cushion, VS

6 x 6 mm (calibrated)

$ 57.25

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1.64ct Orange Moonstone, Cushion, Translucent

1.64ct Orange Moonstone, Cushion, Translucent

7 x 7 mm (calibrated)

$ 3.27

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3.48ct Blue Aquamarine, Pear Shape, Translucent

3.48ct Blue Aquamarine, Pear Shape, Translucent

13 x 9 mm (calibrated)

$ 72.21

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1.99ct Red Almandine Garnet, Oval, VS

1.99ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 74.33

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25.09ct Multicolor Quartz With Marcasite, Oval, Transparent

25.09ct Multicolor Quartz With Marcasite, Oval, Transparent

25.3 x 17.2 mm

$ 164.93

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0.62ct Purple Spinel, Oval, VVS-VS

0.62ct Purple Spinel, Oval, VVS-VS

5.9 x 4.9 mm

$ 51.46

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0.72ct Orange Zircon, Oval, VVS

0.72ct Orange Zircon, Oval, VVS

6 x 4 mm (calibrated)

$ 10.76

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2.84ct Blue Kyanite, Oval, SI

2.84ct Blue Kyanite, Oval, SI

9.6 x 7.2 mm

$ 70.72

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8.34ct Yellow Apatite, Oval, VS
Apatite Product Video (384551)

8.34ct Yellow Apatite, Oval, VS

14.8 x 12 mm

$ 274.12

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2.45ct Multicolor Labradorite, Pear Shape, Translucent

2.45ct Multicolor Labradorite, Pear Shape, Translucent

10 x 7 mm (calibrated)

$ 5.42

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2.94ct Orange Spessartite Garnet, Oval, Transparent

2.94ct Orange Spessartite Garnet, Oval, Transparent

8.2 x 7 mm

$ 73.21

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2.89ct Violet Amethyst, Trillion, VS

2.89ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 20.15

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1.75ct Yellow Beryl, Oval, VVS

1.75ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 34.86

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0.57ct Yellow Tourmaline, Round, Transparent

0.57ct Yellow Tourmaline, Round, Transparent

5 mm (calibrated)

$ 11.35

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6.76ct Multicolor Coral, Pear Shape, Opaque

6.76ct Multicolor Coral, Pear Shape, Opaque

16.6 x 11.2 mm

$ 14.81

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1.97ct Brown Tiger'S Eye, Round, Opaque

1.97ct Brown Tiger'S Eye, Round, Opaque

8 mm (calibrated)

$ 1.96

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10.61ct Yellow Calcite, Pear Shape, Translucent

10.61ct Yellow Calcite, Pear Shape, Translucent

20.7 x 12.1 mm

$ 7.29

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8.83ct Brown Tiger'S Eye, Oval, Opaque

8.83ct Brown Tiger'S Eye, Oval, Opaque

14 x 10 mm (calibrated)

$ 8.80

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10.21ctw Yellow Citrine, Oval, VVS-VS

10.21ctw Yellow Citrine, Oval, VVS-VS

12.5 x 10.2 mm

$ 78.30

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46.95ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

46.95ct Multicolor Tiger'S Eye Matrix, Oval, Opaque

33.1 x 20.9 mm

$ 46.76

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1.13ct Purple Spinel, Cushion, VVS-VS

1.13ct Purple Spinel, Cushion, VVS-VS

6.4 x 6.1 mm

$ 85.17

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3.44ctw White Rainbow Moonstone, Square, Transparent

3.44ctw White Rainbow Moonstone, Square, Transparent

3.2 x 3 mm

$ 49.39

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98.28ct Green Moss Agate, Square, Opaque
Moss Agate Product Video (753221)

98.28ct Green Moss Agate, Square, Opaque

26.8 x 26.7 mm

$ 81.57

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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

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

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
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

Ita's a pretty good and simple way to find gems that youa're looking for amazing selection

Posted By Amman in May, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate

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
Source: Bizrate
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