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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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Yellow Untreated Gemstones
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4.80ct Yellow Citrine, Oval, VVS

4.80ct Yellow Citrine, Oval, VVS

12.6 x 10.3 mm

$ 33.47

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57.87ct Yellow Druzy Citrine, Oval, Opaque

57.87ct Yellow Druzy Citrine, Oval, Opaque

28.8 x 19.5 mm

$ 54.78

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1.32ct Pink Morganite, Round, VVS-VS

1.32ct Pink Morganite, Round, VVS-VS

7 mm (calibrated)

$ 51.28

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0.55ct Pink Morganite, Pear Shape, VVS-VS

0.55ct Pink Morganite, Pear Shape, VVS-VS

8 x 4.6 mm

$ 33.15

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0.68ct Yellow Citrine, Pear Shape, VVS

0.68ct Yellow Citrine, Pear Shape, VVS

7.7 x 5.1 mm

$ 3.39

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77.16ctw Bi-Color Tourmaline, Flower Cut, Transparent
Tourmaline Product Video (521272)

77.16ctw Bi-Color Tourmaline, Flower Cut, Transparent

33.6 x 33.3 mm

$ 771.60

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1.52ct Green Chrysoprase, Oval, Translucent

1.52ct Green Chrysoprase, Oval, Translucent

7.5 x 6.2 mm

$ 12.62

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0.86ct Yellow Color-Change Diaspore, Baguette, VVS-VS

0.86ct Yellow Color-Change Diaspore, Baguette, VVS-VS

7 x 4.3 mm

$ 45.40

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14.46ct Green Aventurine, Oval, Translucent

14.46ct Green Aventurine, Oval, Translucent

22.4 x 14 mm

$ 14.40

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1.53ct Blue Cavansite, Fancy, Opaque

1.53ct Blue Cavansite, Fancy, Opaque

9.4 x 8.9 mm

$ 8.89

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2.24ct Orange Hessonite Garnet, Emerald Cut, VS-SI

2.24ct Orange Hessonite Garnet, Emerald Cut, VS-SI

8.3 x 6.3 mm

$ 36.95

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2.81ct Yellow Citrine, Fancy, VVS-VS

2.81ct Yellow Citrine, Fancy, VVS-VS

8 x 6.9 mm

$ 21.56

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7.07ct Brown Smoky Quartz, Round, VVS-VS

7.07ct Brown Smoky Quartz, Round, VVS-VS

13 mm (calibrated)

$ 11.62

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3.80ctw Pink Rose Quartz, Emerald Cut, Transparent

3.80ctw Pink Rose Quartz, Emerald Cut, Transparent

7.6 x 7.5 mm

$ 20.82

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1.14ct Gray Sillimanite Cat'S Eye, Oval, Transparent

1.14ct Gray Sillimanite Cat'S Eye, Oval, Transparent

7 x 4.5 mm

$ 3.74

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5.13ct Brown Moonstone, Round, Translucent

5.13ct Brown Moonstone, Round, Translucent

11 mm (calibrated)

$ 11.30

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1.73ctw Red Pyrope Garnet, Square, VS

1.73ctw Red Pyrope Garnet, Square, VS

4.8 x 4.7 mm

$ 13.26

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2.92ctw Multicolor Labradorite, Round, Translucent

2.92ctw Multicolor Labradorite, Round, Translucent

7 mm (calibrated)

$ 7.09

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6.40ct Brown Smoky Quartz, Round, VVS-VS

6.40ct Brown Smoky Quartz, Round, VVS-VS

13 mm (calibrated)

$ 10.52

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2.81ct Violet Amethyst, Trillion, VS

2.81ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 19.59

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19.54ct Violet Amethyst, Cushion, VVS

19.54ct Violet Amethyst, Cushion, VVS

18 x 18 mm (calibrated)

$ 136.24

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0.92ct Yellow Citrine, Trillion, VVS-VS

0.92ct Yellow Citrine, Trillion, VVS-VS

7 x 7 mm (calibrated)

$ 6.04

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1.33ctw Yellow Citrine, Trillion, VS

1.33ctw Yellow Citrine, Trillion, VS

6 x 6 mm (calibrated)

$ 10.60

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3.75ct Yellow Citrine, Oval, VS

3.75ct Yellow Citrine, Oval, VS

12.4 x 8.9 mm

$ 28.77

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

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

Posted By Love it! in February, 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

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
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
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