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: 655969
Weight: 12.85ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 20.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 394832
Weight: 12.26ct
Size: 15 x 15 mm (calibrated)
Clarity: VVS-VS
Price: $ 48.55
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 492517
Weight: 3.20ct
Size: 12.8 x 9.5 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 23.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 539173
Weight: 5.74ct (total)
Size: 9 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 15.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 548408
Weight: 1.21ct
Size: 9 x 6.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 399.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 734757
Weight: 3.32ct
Size: 10 x 8 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 139.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 406592
Weight: 2.77ct
Size: 9 x 7 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 170.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 500855
Weight: 8.50ct
Size: 14 x 10 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 65.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 642678
Weight: 0.64ct
Size: 7 x 5 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 13.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 603176
Weight: 3.12ct
Size: 10 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 41.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 314626
Weight: 3.65ct (total)
Size: 3 x 3 mm (calibrated)
Clarity: Transparent
Content: 20 pcs
Price: $ 81.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 476731
Weight: 38.77ct
Size: 28.5 x 17.6 mm
Clarity: Translucent
Content: 1 pc
Price: $ 153.53
Item in Stock
More Options & Item Details
Add to Cart
ID: 691137
Weight: 0.36ct
Size: 3.9 x 3.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 13.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 685882
Weight: 1.37ct
Size: 7.2 x 5.7 mm
Clarity: VS
Content: 1 pc
Price: $ 25.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 450963
Weight: 1.79ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 16.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 693812
Weight: 6.32ct
Size: 14 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 22.75
Item in Stock
More Options & Item Details
Add to Cart
ID: 480230
Weight: 4.25ct (total)
Size: 5.5 x 5 mm
Clarity: Transparent
Content: 10 pcs
Price: $ 8.98
Item in Stock
More Options & Item Details
Add to Cart
ID: 554049
Weight: 1.50ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 39.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 390585
Weight: 1.94ct (total)
Size: 4.2 x 3.2 mm
Clarity: VS
Content: 9 pcs
Price: $ 124.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 733756
Weight: 3.86ct
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 34.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 701023
Weight: 0.81ct
Size: 5.5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 48.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 724715
Weight: 0.67ct
Size: 7 x 5 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 20.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 393250
Weight: 2.19ct (total)
Size: 4 x 1.9 mm
Clarity: VS
Content: 20 pcs
Price: $ 159.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 706507
Weight: 14.08ct
Size: 16.1 x 13.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 28.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 460538
Weight: 4.79ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 63.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 395824
Weight: 2.38ct
Size: 7.6 x 7.6 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 62.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 414568
Weight: 9.15ct
Size: 12 x 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 60.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 635155
Weight: 1.86ct
Size: 9 x 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 40.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 464126
Weight: 6.45ct
Size: 13 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 12.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 690289
Weight: 32.77ct
Size: 28 x 16.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 50.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 492610
Weight: 5.31ct
Size: 14 x 10 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 38.41
Item in Stock
More Options & Item Details
Add to Cart
ID: 655357
Weight: 0.84ct
Size: 6 x 6 mm (calibrated)
Clarity: Transparent
Price: $ 7.06
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 385179
Weight: 10.32ct
Size: 20.9 x 12.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 92.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 505927
Weight: 2.54ct
Size: 10 x 7.5 mm
Clarity: VS
Content: 1 pc
Price: $ 167.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 322521
Weight: 8.93ct (total)
Size: 8.5 x 7.2 mm
Clarity: Transparent/Translucent
Content: 4 pcs
Price: $ 58.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 687111
Weight: 12.22ct
Size: 19 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 30.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 409674
Weight: 6.89ct (total)
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 32.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 721355
Weight: 14.32ct
Size: 15.2 x 13.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 17.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 707156
Weight: 1.34ct
Size: 9.7 x 5.4 mm
Clarity: Translucent
Content: 1 pc
Price: $ 3.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 346224
Weight: 2.67ct (total)
Size: 2.3 x 2.3 mm
Clarity: VVS-VS
Content: 30 pcs
Price: $ 299.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 436074
Weight: 3.58ct
Size: 14.3 x 7.2 mm
Clarity: Transparent
Content: 1 pc
Price: $ 11.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 710492
Weight: 6.29ct
Size: 12 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 4.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 708246
Weight: 0.88ct
Size: 6.5 x 5.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 18.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 643489
Weight: 1.45ct
Size: 7.7 x 6.3 mm
Clarity: VS
Content: 1 pc
Price: $ 34.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 409878
Weight: 8.83ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 4 pcs
Price: $ 58.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 413707
Weight: 13.41ct
Size: 15 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 442.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 719381
Weight: 0.75ct
Size: 6 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 13.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 715465
Weight: 3.47ct
Size: 12 x 10 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 33.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 725732
Weight: 0.42ct
Size: 5 x 5 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 4.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 306911
Weight: 3.70ct (total)
Size: 3.2 x 3.2 mm
Clarity: Transparent
Content: 20 pcs
Price: $ 83.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 392233
Weight: 8.17ct (total)
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 53.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 662836
Weight: 1.03ct
Size: 6.5 x 5.5 mm
Clarity: Transparent
Content: 1 pc
Price: $ 6.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 396018
Weight: 11.12ct
Size: 14 x 14 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 23.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 469753
Weight: 11.58ct
Size: 16 x 12 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 24.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 517234
Weight: 9.29ct
Size: 17 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 35.45
Item in Stock
More Options & Item Details
Add to Cart
ID: 465917
Weight: 4.33ct (total)
Size: 11.8 x 6 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 45.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 732593
Weight: 1.07ct
Size: 8 x 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 41.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 735084
Weight: 10.45ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 50.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 722808
Weight: 0.64ct
Size: 5.3 x 5.1 mm
Clarity: VS
Content: 1 pc
Price: $ 19.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 445140
Weight: 13.26ct
Size: 15 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 438.98
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
263
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

Loved everything. High quality, quick shipping, and authentication included.

Posted By Chris in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

went well

Posted By Doug in May, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It is a good experience, it is easy to view the item, and easy to check out.

Posted By Neo in November, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Always find more niche sizes/shapes as my unconventional designs require from this website. Recommending to fellow designers in the creative atmosphere on the usual, specially due to the quality and certification of gems.

Posted By Sina in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.

Posted By Razormane in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the quality, presentation and the price of the stones. I love the identification card - report they send with each stone.

Posted By Dia in March, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

The website was nice and I bought some gems

Posted By Jay in December, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

great experience

Posted By T in December, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

Site is easy to navigate - details on cut, polish, and finish work and techniques were helpful. 3d view or wireframe diagram of stones would be nice.

Posted By Tb in August, 2024
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

Loved everything. High quality, quick shipping, and authentication included.

Posted By Chris in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

went well

Posted By Doug in May, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It is a good experience, it is easy to view the item, and easy to check out.

Posted By Neo in November, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Always find more niche sizes/shapes as my unconventional designs require from this website. Recommending to fellow designers in the creative atmosphere on the usual, specially due to the quality and certification of gems.

Posted By Sina in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.

Posted By Razormane in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the quality, presentation and the price of the stones. I love the identification card - report they send with each stone.

Posted By Dia in March, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

The website was nice and I bought some gems

Posted By Jay in December, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

great experience

Posted By T in December, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

Site is easy to navigate - details on cut, polish, and finish work and techniques were helpful. 3d view or wireframe diagram of stones would be nice.

Posted By Tb in August, 2024
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