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

2.03ct Orange Hessonite Garnet, Cushion, VS-SI

7 x 7 mm (calibrated)

$ 32.88

View Gem

3.73ct Green Druzy Variscite, Fancy, Opaque

16.8 x 9.1 mm

$ 17.61

View Gem

3.57ct Yellow Citrine, Pear Shape, VVS-VS

12 x 10 mm (calibrated)

$ 22.42

View Gem

1.93ct Orange Hessonite Garnet, Oval, VS

8.5 x 6.7 mm

$ 35.95

View Gem

2.89ctw Yellow Golden Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 69.66

View Gem

2.10ctw Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 57.52

View Gem

37.55ct Brown Jasper, Cushion, Opaque

25.4 x 25.4 mm

$ 57.60

View Gem

0.86ct Yellow Morganite, Pear Shape, VS

8 x 6 mm (calibrated)

$ 47.11

View Gem

8.39ct Multicolor Agate, Fancy, Opaque

13.9 x 7.7 mm

$ 14.69

View Gem

2.91ct Yellow Apatite, Pear Shape, VS

12 x 8 mm (calibrated)

$ 79.71

View Gem

34.89ct Yellow Citrine, Cushion, VVS

24.6 x 16.3 mm

$ 231.67

View Gem

7.42ct Yellow Rutile Topaz, Pear Shape, Transparent

16.4 x 10.4 mm

$ 153.97

View Gem

1.93ct Yellow Citrine, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 12.69

View Gem

3.06ctw Brown Moonstone, Flower Cut, Translucent

8 x 8 mm (calibrated)

$ 13.40

View Gem

2.20ct Red Almandine Garnet, Oval, VVS

9 x 7 mm (calibrated)

$ 82.17

View Gem

5.46ct Yellow Rutile Topaz, Pear Shape, Transparent

12 x 12 mm (calibrated)

$ 113.30

View Gem

1.12ctw Green Peridot, Oval, Transparent

6.1 x 4.2 mm

$ 20.08

View Gem

5.46ct Pink Kunzite, Emerald Cut, VVS-VS

11 x 7.6 mm

$ 150.25

View Gem

8.90ct Multicolor Ruby-Zoisite, Round, Opaque

12 mm (calibrated)

$ 21.63

View Gem

1.51ctw Multicolor Opal, Oval, Transparent

7 x 5 mm (calibrated)

$ 66.18

View Gem

20.74ct Brown Tiger'S Eye, Oval, Opaque

24.7 x 16.5 mm

$ 41.32

View Gem

0.47ct Yellow Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 14.04

View Gem

41.61ct Violet Amethyst, Pear Shape, VVS

32.7 x 19.6 mm

$ 331.55

View Gem

9.05ct Multicolor Pietersite, Marquise, Opaque

21.1 x 10.1 mm

$ 22.17

View Gem
1 2 3
...
60
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 -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
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

Very food

Posted By Keeto in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
Source: Bizrate
Enlarged Gemstone Image