90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
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

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Untreated Gemstones
Black Untreated Gemstones
Blue Untreated Gemstones
Brown Untreated Gemstones
Golden Untreated Gemstones
Gray Untreated Gemstones
Green Untreated Gemstones
Multicolor Untreated Gemstones
Orange Untreated Gemstones
Pink Untreated Gemstones
Purple Untreated Gemstones
Red Untreated Gemstones
Turquoise Untreated Gemstones
Violet Untreated Gemstones
White Untreated Gemstones
Yellow Untreated Gemstones
Single
Pairs
Lots
Faceted
Cabochons
Clear All
7.92ct Yellow Apatite, Cushion, VS-SI
Apatite Product Video (385928)

7.92ct Yellow Apatite, Cushion, VS-SI

15.2 x 11.7 mm

$ 418.23

View Gem
1.10ct Orange Hessonite Garnet, Oval, VVS-VS

1.10ct Orange Hessonite Garnet, Oval, VVS-VS

7 x 5.7 mm

$ 16.80

View Gem
9.65ctw Multicolor Pietersite, Oval, Opaque

9.65ctw Multicolor Pietersite, Oval, Opaque

16 x 12 mm (calibrated)

$ 36.42

View Gem
0.22ct Pink Morganite, Round, VVS-VS

0.22ct Pink Morganite, Round, VVS-VS

4.2 mm

$ 9.13

View Gem
28.11ct Multicolor Labradorite, Round, Translucent

28.11ct Multicolor Labradorite, Round, Translucent

25.3 mm

$ 62.15

View Gem
77.89ctw Multicolor Rhodochrosite, Sphere / Ball, Opaque
Rhodochrosite Product Video (447524)

77.89ctw Multicolor Rhodochrosite, Sphere / Ball, Opaque

16.2 mm

$ 170.67

View Gem
3.26ctw Yellow Citrine, Oval, VVS

3.26ctw Yellow Citrine, Oval, VVS

9 x 7 mm (calibrated)

$ 17.86

View Gem
1.34ctw White Rainbow Moonstone, Heart, Transparent

1.34ctw White Rainbow Moonstone, Heart, Transparent

6 x 6 mm (calibrated)

$ 44.06

View Gem
0.03ct White Diamond, Round, VVS

0.03ct White Diamond, Round, VVS

2 mm (calibrated)

$ 68.48

View Gem
4.85ct Green Prehnite, Oval, Transparent

4.85ct Green Prehnite, Oval, Transparent

12 x 10 mm (calibrated)

$ 100.64

View Gem
0.20ctw White Diamond, Round, VVS-VS

0.20ctw White Diamond, Round, VVS-VS

2.9 mm (calibrated)

$ 363.37

View Gem
2.02ct Green Tourmaline, Emerald Cut, VS

2.02ct Green Tourmaline, Emerald Cut, VS

15.1 x 4.4 mm

$ 100.60

View Gem
20.87ctw Multicolor Fossil Coral, Oval, Opaque

20.87ctw Multicolor Fossil Coral, Oval, Opaque

19.9 x 12.1 mm

$ 26.98

View Gem
18.92ct Violet Amethyst, Cushion, VVS

18.92ct Violet Amethyst, Cushion, VVS

18 x 18 mm (calibrated)

$ 150.75

View Gem
52.80ct Multicolor Chrysocolla, Pear Shape, Opaque
Chrysocolla Product Video (658698)

52.80ct Multicolor Chrysocolla, Pear Shape, Opaque

26.8 x 25.2 mm

$ 89.93

View Gem
0.56ct Orange Citrine, Marquise, VVS-VS

0.56ct Orange Citrine, Marquise, VVS-VS

8 x 4 mm (calibrated)

$ 3.90

View Gem
1.83ct Orange Hessonite Garnet, Oval, VS-SI

1.83ct Orange Hessonite Garnet, Oval, VS-SI

8.1 x 6.8 mm

$ 36.45

View Gem
1.52ct Orange Zircon, Round, VVS-VS

1.52ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 36.25

View Gem
7.30ct Violet Amethyst, Pear Shape, VVS

7.30ct Violet Amethyst, Pear Shape, VVS

16.7 x 12.2 mm

$ 50.90

View Gem
4.38ct Brown Smoky Quartz, Flower Cut, Transparent

4.38ct Brown Smoky Quartz, Flower Cut, Transparent

11 x 11 mm (calibrated)

$ 18.38

View Gem
1.70ctw Yellow Citrine, Marquise, VS

1.70ctw Yellow Citrine, Marquise, VS

9 x 5.1 mm

$ 13.55

View Gem
0.12ct Black Diamond, Round, Opaque

0.12ct Black Diamond, Round, Opaque

3 mm (calibrated)

$ 57.09

View Gem
16.78ct Multicolor Jasper, Fancy, Opaque

16.78ct Multicolor Jasper, Fancy, Opaque

24.5 x 16.7 mm

$ 27.58

View Gem
52.92ct Multicolor Jasper, Oval, Opaque

52.92ct Multicolor Jasper, Oval, Opaque

36.3 x 29.5 mm

$ 43.48

View Gem
1 2 3
...
537
Choose Page
1 - 1896

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 to use website

Posted By Mel in February, 2026
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

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate

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 -> 10 star ratings

I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image