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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
Black Untreated Gemstones
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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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77.09ct Multicolor Chrysocolla, Oval, Opaque
Chrysocolla Product Video (658617)

77.09ct Multicolor Chrysocolla, Oval, Opaque

42 x 33.4 mm

$ 131.29

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15.26ct Multicolor Jasper, Oval, Opaque

15.26ct Multicolor Jasper, Oval, Opaque

20 x 15 mm (calibrated)

$ 25.08

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1.60ct Pink Tourmaline, Oval, VVS
Tourmaline Product Video (747425)

1.60ct Pink Tourmaline, Oval, VVS

7.4 x 6.2 mm

$ 239.04

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0.54ct Pink Tourmaline, Round, Transparent

0.54ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 17.93

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2.00ct White Rainbow Moonstone, Oval, VS

2.00ct White Rainbow Moonstone, Oval, VS

8.2 x 6.9 mm

$ 208.79

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1.26ct Multicolor Opal, Trillion, Transparent

1.26ct Multicolor Opal, Trillion, Transparent

8 x 8 mm (calibrated)

$ 32.21

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39.04ct Violet Amethyst, Oval, IF
Amethyst Product Video (506052)

39.04ct Violet Amethyst, Oval, IF

23.7 x 17.6 mm

$ 256.63

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2.53ct Orange Hessonite Garnet, Cushion, VS-SI

2.53ct Orange Hessonite Garnet, Cushion, VS-SI

8 x 8 mm (calibrated)

$ 55.44

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5.04ctw Yellow Citrine, Oval, VVS-VS

5.04ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 27.61

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7.83ct Pink Rose Quartz, Emerald Cut, Transparent

7.83ct Pink Rose Quartz, Emerald Cut, Transparent

12 x 12 mm (calibrated)

$ 42.89

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1.71ct Yellow Beryl, Round, VVS

1.71ct Yellow Beryl, Round, VVS

8 mm (calibrated)

$ 34.06

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6.01ct Orange Imperial Topaz, Pear Shape, VVS
Imperial Topaz Product Video (346642)

6.01ct Orange Imperial Topaz, Pear Shape, VVS

19.9 x 7.8 mm

$ 3,352.14

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10.07ct Violet Amethyst, Cushion, VVS

10.07ct Violet Amethyst, Cushion, VVS

15.6 x 13.6 mm

$ 70.21

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2.99ct Violet Amethyst, Trillion, VVS-VS

2.99ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 20.85

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1.10ct Multicolor Opal, Oval, Translucent

1.10ct Multicolor Opal, Oval, Translucent

10 x 8 mm (calibrated)

$ 42.62

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20.60ct Yellow Aventurine, Fancy, Opaque

20.60ct Yellow Aventurine, Fancy, Opaque

31.2 x 9.3 mm

$ 6.16

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0.63ct Green Peridot, Oval, VVS-VS

0.63ct Green Peridot, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 11.30

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3.40ct White Moonstone, Oval, Translucent

3.40ct White Moonstone, Oval, Translucent

11.2 x 8.2 mm

$ 31.04

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9.41ct Violet Amethyst, Heart, Transparent

9.41ct Violet Amethyst, Heart, Transparent

16.1 x 12.5 mm

$ 46.86

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49.60ct Multicolor Moss Agate, Pear Shape, Translucent
Moss Agate Product Video (695017)

49.60ct Multicolor Moss Agate, Pear Shape, Translucent

37.3 x 31.5 mm

$ 49.40

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1.22ct Green Tourmaline, Emerald Cut, VS

1.22ct Green Tourmaline, Emerald Cut, VS

15.3 x 3.4 mm

$ 26.66

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77.61ct Green Maw-Sit-Sit, Baguette, Opaque
Maw-Sit-Sit Product Video (474138)

77.61ct Green Maw-Sit-Sit, Baguette, Opaque

23.2 x 16.5 mm

$ 255.08

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0.83ct Orange Sphalerite, Round, VS-SI

0.83ct Orange Sphalerite, Round, VS-SI

5.5 mm (calibrated)

$ 41.33

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1.41ct White Rainbow Moonstone, Round, Transparent

1.41ct White Rainbow Moonstone, Round, Transparent

7 mm (calibrated)

$ 24.00

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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

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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