X
Gemstone Search
90,000+ Happy Customers
20+ Years In Business
Call Us Mon–Fri 8am–5pm

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

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
7.25ct Green Prehnite, Fancy, Translucent

7.25ct Green Prehnite, Fancy, Translucent

15.9 x 10.2 mm

$ 11.92

View Gem
3.31ctw Pink Strawberry Quartz, Oval, Translucent

3.31ctw Pink Strawberry Quartz, Oval, Translucent

8.2 x 6.3 mm

$ 16.53

View Gem
1.42ct Orange Zircon, Round, VVS-VS

1.42ct Orange Zircon, Round, VVS-VS

6.5 mm (calibrated)

$ 33.86

View Gem
0.94ct Pink Morganite, Pear Shape, VVS-VS
Morganite Product Video (473789)

0.94ct Pink Morganite, Pear Shape, VVS-VS

9.6 x 5 mm

$ 56.64

View Gem
0.57ct Green Peridot, Emerald Cut, VS

0.57ct Green Peridot, Emerald Cut, VS

6 x 4 mm (calibrated)

$ 8.52

View Gem
1.14ctw Green Demantoid Garnet, Oval, VS

1.14ctw Green Demantoid Garnet, Oval, VS

4.3 x 3.4 mm

$ 124.90

View Gem
11.53ct Multicolor Agate, Sphere / Ball, Opaque
Agate Product Video (700576)

11.53ct Multicolor Agate, Sphere / Ball, Opaque

11 mm (calibrated)

$ 9.18

View Gem
1.76ct Orange Moonstone, Trillion, Translucent

1.76ct Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 3.50

View Gem
4.11ctw Violet Amethyst, Oval, VVS-VS

4.11ctw Violet Amethyst, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 22.52

View Gem
2.18ct Red Almandine Garnet, Oval, VVS

2.18ct Red Almandine Garnet, Oval, VVS

9 x 7 mm (calibrated)

$ 81.42

View Gem
1.51ct White Opal, Oval, Translucent

1.51ct White Opal, Oval, Translucent

10 x 7 mm (calibrated)

$ 37.60

View Gem
12.22ct Multicolor Pietersite, Round, Opaque

12.22ct Multicolor Pietersite, Round, Opaque

19 mm (calibrated)

$ 24.95

View Gem
1.50ct Pink Tourmaline, Cushion, VS-SI

1.50ct Pink Tourmaline, Cushion, VS-SI

7.1 x 6.7 mm

$ 224.10

View Gem
1.45ct Orange Hessonite Garnet, Oval, VVS-VS

1.45ct Orange Hessonite Garnet, Oval, VVS-VS

7.8 x 6.3 mm

$ 28.88

View Gem
2.13ct Orange Hessonite Garnet, Oval, VS-SI

2.13ct Orange Hessonite Garnet, Oval, VS-SI

9 x 7 mm (calibrated)

$ 30.34

View Gem
0.91ct Red Rhodolite Garnet, Oval, VS

0.91ct Red Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 33.99

View Gem
43.55ct Green Jade, Fancy, Translucent

43.55ct Green Jade, Fancy, Translucent

33.1 x 17.8 mm

$ 27.19

View Gem
23.45ctw Multicolor Labradorite, Oval, Translucent

23.45ctw Multicolor Labradorite, Oval, Translucent

22.3 x 16.3 mm

$ 51.39

View Gem
0.85ct Yellow Citrine, Marquise, VS

0.85ct Yellow Citrine, Marquise, VS

9.2 x 5 mm

$ 6.77

View Gem
6.62ct Brown Tiger'S Eye, Baguette, Opaque

6.62ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 6.59

View Gem
2.15ctw Yellow Citrine, Square, VS

2.15ctw Yellow Citrine, Square, VS

6 x 6 mm (calibrated)

$ 14.99

View Gem
0.43ct Orange Citrine, Marquise, VS

0.43ct Orange Citrine, Marquise, VS

8 x 4 mm (calibrated)

$ 3.21

View Gem
0.82ctw Green Peridot, Pear Shape, VVS-VS

0.82ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 7.19

View Gem
1.13ct Purple Spinel, Cushion, VVS-VS

1.13ct Purple Spinel, Cushion, VVS-VS

6.4 x 6.1 mm

$ 85.17

View Gem
1 2 3
...
1504
Choose Page
1 - 1895

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

It was all good

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 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 -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image