X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

Loose Untreated Gemstones: Certified Natural Gems for Collectors and Jewelry, Wholesale Untreated Stones

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
  • Actual Product Photos
  • Reliable Quality
  • Full Transparency
  • Large Selection
  • Affordable Prices
  • Fast, Secure Global Shipping
ID: 455699
Weight: 1.43ct
Size: 9.8 x 5 mm
Clarity: VS
Content: 1 pc
Price: $ 13.21
Item in Stock
More Options & Item Details
Add to Cart
ID: 446059
Weight: 4.24ct
Size: 13.4 x 10 mm
Clarity: VVS
Content: 1 pc
Price: $ 30.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 713418
Weight: 0.96ct
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 16.13
Item in Stock
More Options & Item Details
Add to Cart
ID: 640079
Weight: 2.16ct
Size: 8.6 x 6.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 12.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 716127
Weight: 12.30ct
Size: 18 x 13 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 118.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 490281
Weight: 1.27ct
Size: 6.7 x 6.3 mm
Clarity: VVS
Content: 1 pc
Price: $ 96.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 718038
Weight: 20.09ct
Size: 24.1 x 19.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 72.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 451103
Weight: 1.81ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 16.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 572145
Weight: 12.81ct (total)
Size: 15.1 x 11 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 50.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 488725
Weight: 4.76ct
Size: 10.7 x 9.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 48.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 384617
Weight: 24.90ct
Size: 22.9 x 17 mm
Clarity: Translucent
Content: 1 pc
Price: $ 49.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 484124
Weight: 5.16ct
Size: 11 x 8.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 34.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 707861
Weight: 5.74ct
Size: 13.5 x 10.4 mm
Clarity: Transparent
Content: 1 pc
Price: $ 41.33
Item in Stock
More Options & Item Details
Add to Cart
ID: 456459
Weight: 2.99ct
Size: 12.1 x 8.9 mm
Clarity: VS
Content: 1 pc
Price: $ 27.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 691770
Weight: 0.47ct (total)
Size: 3.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 17.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 458415
Weight: 4.84ct
Size: 15 x 10 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 40.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 685498
Weight: 20.28ct
Size: 19.1 x 16 mm
Clarity: Opaque
Content: 1 pc
Price: $ 86.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 485286
Weight: 3.99ct (total)
Size: 7.6 x 7.5 mm
Clarity: Translucent
Content: 4 pcs
Price: $ 21.07
Item in Stock
More Options & Item Details
Add to Cart
ID: 305963
Weight: 5.44ct (total)
Size: 11.2 x 7.3 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 35.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 714466
Weight: 0.48ct
Size: 5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 14.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 572447
Weight: 2.78ct
Size: 10 x 10 mm (calibrated)
Clarity: VS
Price: $ 25.69
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 283425
Weight: 1.16ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 104.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 478841
Weight: 0.48ct
Size: 8 x 3.8 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 34.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 348661
Weight: 4.20ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 10 pcs
Price: $ 38.81
Item in Stock
More Options & Item Details
Add to Cart
ID: 667938
Weight: 19.38ct
Size: 23 x 16.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 69.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 674152
Weight: 1.28ct
Size: 9.5 x 7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 53.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 524600
Weight: 1.49ct
Size: 6 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 127.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 710998
Weight: 11.20ct
Size: 16 x 12 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 29.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 512373
Weight: 12.08ct
Size: 18 x 13 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 79.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 499831
Weight: 4.18ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 10 pcs
Price: $ 38.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 479363
Weight: 0.71ct (total)
Size: 4.1 x 3.2 mm
Clarity: VS-SI
Content: 3 pcs
Price: $ 93.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 697431
Weight: 7.87ct
Size: 18.2 x 9.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 56.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 390907
Weight: 9.06ct (total)
Size: 14 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 17.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 694388
Weight: 57.97ct
Size: 31.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 52.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 464251
Weight: 4.20ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VS
Content: 10 pcs
Price: $ 38.81
Item in Stock
More Options & Item Details
Add to Cart
ID: 707971
Weight: 2.72ct
Size: 9 x 7 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 4.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 698773
Weight: 2.65ct (total)
Size: 6.7 x 6.1 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 15.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 484741
Weight: 34.54ct
Size: 30 x 22 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 33.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 563788
Weight: 0.99ct
Size: 7.5 x 5.8 mm
Clarity: Translucent
Content: 1 pc
Price: $ 15.07
Item in Stock
More Options & Item Details
Add to Cart
ID: 490911
Weight: 4.18ct (total)
Size: 5.7 mm
Clarity: VS
Content: 5 pcs
Price: $ 49.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 494415
Weight: 1.48ct
Size: 12 x 5.9 mm
Clarity: VS
Price: $ 11.72
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 655762
Weight: 1.69ct (total)
Size: 6 x 6 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 14.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 699115
Weight: 2.58ct
Size: 11 x 9 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 21.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 718209
Weight: 0.02ct
Size: 2 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 16.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 472305
Weight: 18.29ct
Size: 21.5 x 13.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 72.43
Item in Stock
More Options & Item Details
Add to Cart
ID: 717377
Weight: 1.28ct
Size: 8.6 x 4.9 mm
Clarity: VVS
Content: 1 pc
Price: $ 414.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 533395
Weight: 1.60ct
Size: 8 x 8 mm (calibrated)
Clarity: VVS-VS
Price: $ 12.74
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 689341
Weight: 1.45ct (total)
Size: 6 x 6 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 13.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 696584
Weight: 44.34ct
Size: 37.3 x 12.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 5.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 582941
Weight: 1.11ct
Size: 7.6 x 6 mm
Clarity: VS
Content: 1 pc
Price: $ 58.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 557739
Weight: 6.99ct (total)
Size: 12 x 10 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 52.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 385861
Weight: 2.79ct (total)
Size: 4.6 x 4.6 mm
Clarity: VVS-VS
Content: 6 pcs
Price: $ 18.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 714025
Weight: 0.42ct
Size: 5.7 x 4.5 mm
Clarity: VS
Content: 1 pc
Price: $ 22.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 389054
Weight: 1.22ct
Size: 7 x 5 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 78.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 346229
Weight: 2.54ct (total)
Size: 2.4 x 2.4 mm
Clarity: VVS-VS
Content: 30 pcs
Price: $ 284.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 719936
Weight: 2.82ct
Size: 8.6 x 7.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 84.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 631715
Weight: 4.68ct
Size: 12 x 10 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 56.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 620772
Weight: 0.76ct
Size: 6 x 6 mm (calibrated)
Clarity: VVS-VS
Price: $ 6.38
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 490369
Weight: 5.83ct
Size: 14 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 42.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 664620
Weight: 2.60ct
Size: 9 x 7 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 56.16
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
549
Choose Page
1 - 780

FAQs

What are loose untreated gemstones?

Loose untreated gemstones are natural stones that have not undergone any artificial treatments or enhancements. Examples include unheated sapphires, untreated rubies, and unenhanced diamonds, which maintain their natural beauty and originality.

Why should I choose untreated gemstones over treated ones?

Untreated gemstones, such as unheated topaz and virgin untreated stones, are valued for their authenticity and rarity. These certified untreated gems are perfect for collectors and those seeking ethically sourced, natural stones for unique jewelry designs.

Are untreated gemstones suitable for engagement rings?

Yes, untreated gemstones like GIA-certified natural gems, unenhanced diamonds, and untreated rubies are excellent choices for engagement rings. They offer timeless elegance and are ideal for creating one-of-a-kind designs that reflect personal style.

What makes rare untreated gems valuable for collectors?

Rare untreated gems for collectors, such as authentic untreated crystals and unheated and untreated stones, are prized for their natural appearance and limited availability. Their untouched state makes them highly desirable and a great investment.

How can I ensure the quality of loose untreated gemstones?

Always choose certified untreated gems, like GIA-certified natural gems, to guarantee authenticity and quality. These stones undergo thorough evaluation to ensure they meet the highest standards, making them ideal for both personal collections and jewelry projects.

What types of untreated gemstones are available?

Our collection includes a variety of untreated gemstones such as unheated sapphires, untreated rubies, unenhanced diamonds, and unheated topaz. Each stone is carefully selected to offer unmatched quality and natural beauty.

Are untreated gemstones more expensive than treated ones?

In many cases, untreated gemstones, like precious untreated gemstones and virgin untreated stones, can be more valuable due to their rarity and natural state. Their unique characteristics make them highly sought after by collectors and jewelry enthusiasts.

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

Always excellent quality and service from GemSelect

Posted By Mike B. in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring

Posted By Desertchick in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, no hassle, easy check out and found everything I needed quickly

Posted By Chris in September, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

Easy website to navigate, lots of different varieties and options to choose from.

Posted By Brian in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I searched for the size, dimensions and quality of the stones I was looking for and then compared and ordered.

Posted By Tim in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was very good and concise.

Posted By Whydothey in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I was looking for

Posted By Lincolnpremier in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I like the way your website shows us what stone were buying as well the easy way to navigate the site. also knowing the stones are real...

Posted By RED in January, 2025
Source: Bizrate

Why Choose Loose Untreated Gemstones?

Selecting loose untreated gemstones ensures you’re investing in authentic, natural beauty. Gems like unheated sapphires, untreated rubies, and unenhanced diamonds retain their original allure, free from artificial enhancements. These certified untreated gems are ideal for those seeking unique, ethical, and high-quality stones for custom jewelry or collections.

Perfect for Engagement Rings and Collectors

Our untreated gemstones, including GIA-certified natural gems, are highly sought after for engagement rings and collector’s pieces. With options like unheated topaz and virgin untreated stones, you can create a timeless design that reflects your individual style. Each gem is carefully selected for its purity and brilliance.

Rare and Exquisite Natural Gems

From authentic untreated crystals to precious untreated gemstones, our collection offers something for every taste. These rare untreated gems for collectors are perfect for showcasing the natural beauty of stones like unheated and untreated stones that remain untouched by enhancements, preserving their natural value and appeal.

Quality Assurance You Can Trust

Every stone in our selection of loose untreated gemstones is thoroughly inspected to meet the highest standards. Whether you’re looking for untreated gemstones for engagement rings or certified untreated gems for a special project, our collection ensures authenticity and unparalleled quality.

Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Always excellent quality and service from GemSelect

Posted By Mike B. in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring

Posted By Desertchick in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, no hassle, easy check out and found everything I needed quickly

Posted By Chris in September, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

Easy website to navigate, lots of different varieties and options to choose from.

Posted By Brian in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I searched for the size, dimensions and quality of the stones I was looking for and then compared and ordered.

Posted By Tim in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was very good and concise.

Posted By Whydothey in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I was looking for

Posted By Lincolnpremier in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I like the way your website shows us what stone were buying as well the easy way to navigate the site. also knowing the stones are real...

Posted By RED in January, 2025
Source: Bizrate

FAQ's

What are loose untreated gemstones?

Loose untreated gemstones are natural stones that have not undergone any artificial treatments or enhancements. Examples include unheated sapphires, untreated rubies, and unenhanced diamonds, which maintain their natural beauty and originality.

Why should I choose untreated gemstones over treated ones?

Untreated gemstones, such as unheated topaz and virgin untreated stones, are valued for their authenticity and rarity. These certified untreated gems are perfect for collectors and those seeking ethically sourced, natural stones for unique jewelry designs.

Are untreated gemstones suitable for engagement rings?

Yes, untreated gemstones like GIA-certified natural gems, unenhanced diamonds, and untreated rubies are excellent choices for engagement rings. They offer timeless elegance and are ideal for creating one-of-a-kind designs that reflect personal style.

What makes rare untreated gems valuable for collectors?

Rare untreated gems for collectors, such as authentic untreated crystals and unheated and untreated stones, are prized for their natural appearance and limited availability. Their untouched state makes them highly desirable and a great investment.

How can I ensure the quality of loose untreated gemstones?

Always choose certified untreated gems, like GIA-certified natural gems, to guarantee authenticity and quality. These stones undergo thorough evaluation to ensure they meet the highest standards, making them ideal for both personal collections and jewelry projects.

What types of untreated gemstones are available?

Our collection includes a variety of untreated gemstones such as unheated sapphires, untreated rubies, unenhanced diamonds, and unheated topaz. Each stone is carefully selected to offer unmatched quality and natural beauty.

Are untreated gemstones more expensive than treated ones?

In many cases, untreated gemstones, like precious untreated gemstones and virgin untreated stones, can be more valuable due to their rarity and natural state. Their unique characteristics make them highly sought after by collectors and jewelry enthusiasts.

Enlarged Gemstone Image