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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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1.24ct Orange Hessonite Garnet, Emerald Cut, VS-SI

1.24ct Orange Hessonite Garnet, Emerald Cut, VS-SI

6 x 6 mm (calibrated)

$ 23.10

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3.31ct Red Almandine Garnet, Pear Shape, VVS

3.31ct Red Almandine Garnet, Pear Shape, VVS

12 x 8 mm (calibrated)

$ 123.63

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15.17ct White Rainbow Moonstone, Baguette, Transparent

15.17ct White Rainbow Moonstone, Baguette, Transparent

23.8 x 10.7 mm

$ 120.87

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6.04ct Yellow Rutile Quartz, Pear Shape, Transparent

6.04ct Yellow Rutile Quartz, Pear Shape, Transparent

15.2 x 11 mm

$ 14.92

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4.85ct Yellow Rutile Topaz, Oval, Transparent

4.85ct Yellow Rutile Topaz, Oval, Transparent

11.5 x 9.4 mm

$ 100.64

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0.90ct Yellow Beryl, Oval, VS

0.90ct Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 17.18

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32.26ctw Multicolor Fossil Coral, Cushion, Opaque

32.26ctw Multicolor Fossil Coral, Cushion, Opaque

20.1 x 12.3 mm

$ 36.76

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2.52ctw Violet Amethyst, Oval, VVS-VS

2.52ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 13.80

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0.94ctw Orange Citrine, Marquise, VS

0.94ctw Orange Citrine, Marquise, VS

7.9 x 4.1 mm

$ 5.15

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0.95ctw Red Pyrope Garnet, Square, VVS-VS

0.95ctw Red Pyrope Garnet, Square, VVS-VS

4.2 x 4.1 mm

$ 7.29

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49.22ct Multicolor Jasper, Fancy, Opaque

49.22ct Multicolor Jasper, Fancy, Opaque

34.8 x 23.5 mm

$ 24.61

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1.03ct Purple Spinel, Oval, VVS-VS
Spinel Product Video (752653)

1.03ct Purple Spinel, Oval, VVS-VS

6.9 x 5.4 mm

$ 512.94

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31.13ct Multicolor Jasper, Cushion, Opaque

31.13ct Multicolor Jasper, Cushion, Opaque

30 x 22 mm (calibrated)

$ 22.86

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2.65ctw Violet Amethyst, Heart, VVS-VS

2.65ctw Violet Amethyst, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 20.33

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1.07ct Multicolor Opal, Oval, Transparent

1.07ct Multicolor Opal, Oval, Transparent

9 x 7 mm (calibrated)

$ 33.66

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28.03ctw Multicolor Fossil Coral, Trillion, Opaque

28.03ctw Multicolor Fossil Coral, Trillion, Opaque

22.2 x 13.9 mm

$ 61.42

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1.86ct Orange Zircon, Oval, VVS

1.86ct Orange Zircon, Oval, VVS

8.3 x 5.7 mm

$ 40.97

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2.62ct Brown Tiger'S Eye, Oval, Opaque

2.62ct Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 2.61

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0.69ct Orange Fire Opal, Oval, Translucent

0.69ct Orange Fire Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 15.75

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10.83ct Green Opal, Oval, Opaque

10.83ct Green Opal, Oval, Opaque

21.3 x 13.6 mm

$ 23.19

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4.18ct Violet Amethyst, Pear Shape, VVS

4.18ct Violet Amethyst, Pear Shape, VVS

13 x 9 mm (calibrated)

$ 32.06

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7.17ct Yellow Citrine, Round, VVS-VS

7.17ct Yellow Citrine, Round, VVS-VS

13 mm (calibrated)

$ 54.99

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0.88ct Yellow Morganite, Pear Shape, VVS

0.88ct Yellow Morganite, Pear Shape, VVS

8 x 6 mm (calibrated)

$ 38.56

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4.43ctw Red Pyrope Garnet, Marquise, VVS-VS

4.43ctw Red Pyrope Garnet, Marquise, VVS-VS

12.1 x 6.1 mm

$ 43.82

View Gem
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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

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

Posted By Beman in September, 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
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Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
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Love, and have always loved, your website.

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Overall Rating -> 10 star ratings

Easy process.

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

Very good.

Posted By Tommy in December, 2025
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