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: 539858
Weight: 0.89ct
Size: 5.4 x 5.2 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 17.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 513487
Weight: 4.24ct (total)
Size: 7 x 7 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 44.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 485387
Weight: 10.07ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Translucent
Content: 3 pcs
Price: $ 24.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 711775
Weight: 14.43ct
Size: 20 x 15 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 38.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 396079
Weight: 3.64ct
Size: 8.5 x 8.4 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 96.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 721764
Weight: 0.56ct
Size: 5 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 26.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 698769
Weight: 2.11ct (total)
Size: 6.1 x 5.4 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 12.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 437774
Weight: 1.58ct
Size: 16.3 x 3.4 mm
Clarity: VS
Content: 1 pc
Price: $ 52.14
Item in Stock
More Options & Item Details
Add to Cart
ID: 682527
Weight: 11.26ct
Size: 15.8 x 11.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 67.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 371838
Weight: 16.26ct (total)
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 85.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 695897
Weight: 6.04ct
Size: 13.4 x 9.7 mm
Clarity: VS
Content: 1 pc
Price: $ 181.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 486217
Weight: 5.91ct
Size: 13.1 x 10.5 mm
Clarity: Translucent
Content: 1 pc
Price: $ 49.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 604667
Weight: 3.36ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 97.57
Item in Stock
More Options & Item Details
Add to Cart
ID: 490559
Weight: 5.89ct
Size: 14 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 42.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 682162
Weight: 3.67ct
Size: 14 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 4.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 721358
Weight: 10.42ct
Size: 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 708018
Weight: 3.65ct
Size: 13 x 9 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 3.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 687081
Weight: 13.99ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 16.79
Item in Stock
More Options & Item Details
Add to Cart
ID: 544462
Weight: 0.90ct
Size: 5.2 x 5.2 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 40.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 658243
Weight: 24.39ct
Size: 24.9 x 14.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 35.71
Item in Stock
More Options & Item Details
Add to Cart
ID: 710368
Weight: 8.84ct
Size: 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 25.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 716129
Weight: 4.02ct (total)
Size: 8 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 38.59
Item in Stock
More Options & Item Details
Add to Cart
ID: 439671
Weight: 2.95ct (total)
Size: 5 x 3 mm (calibrated)
Clarity: VS
Content: 9 pcs
Price: $ 38.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 445709
Weight: 4.13ct
Size: 11 x 9 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 38.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 728371
Weight: 31.67ct
Size: 44.7 x 19.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 64.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 391419
Weight: 30.47ct
Size: 28.9 x 23.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 40.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 571145
Weight: 3.74ct
Size: 11 x 9 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 27.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 692984
Weight: 27.45ct
Size: 42.6 x 9.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 9.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 562906
Weight: 4.34ct
Size: 12 x 10 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 40.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 699019
Weight: 3.11ct
Size: 11 x 9 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 26.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 732597
Weight: 0.66ct
Size: 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 25.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 711553
Weight: 1.12ct
Size: 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 22.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 472651
Weight: 26.64ct
Size: 31.4 x 21.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 35.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 382951
Weight: 13.83ct
Size: 20 x 12.4 mm
Clarity: Translucent
Content: 1 pc
Price: $ 54.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 718318
Weight: 1.23ct (total)
Size: 5.3 x 4 mm
Clarity: VVS
Content: 2 pcs
Price: $ 36.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 477455
Weight: 2.70ct (total)
Size: 6.5 mm (calibrated)
Clarity: Translucent
Content: 4 pcs
Price: $ 75.95
Item in Stock
More Options & Item Details
Add to Cart
ID: 693784
Weight: 23.38ct
Size: 34.8 x 20.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 16.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 422740
Weight: 0.68ct
Size: 7 x 3.8 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 26.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 606513
Weight: 2.43ct
Size: 8 x 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 6.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 659278
Weight: 31.64ct
Size: 35.6 x 22.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 75.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 657910
Weight: 0.76ct
Size: 6.5 x 4.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 3.65
Item in Stock
More Options & Item Details
Add to Cart
ID: 636187
Weight: 1.74ct
Size: 9 x 7 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 50.11
Item in Stock
More Options & Item Details
Add to Cart
ID: 696873
Weight: 10.79ct (total)
Size: 15.2 x 9.1 mm
Clarity: VS
Content: 2 pcs
Price: $ 77.69
Item in Stock
More Options & Item Details
Add to Cart
ID: 414947
Weight: 6.14ct
Size: 11 x 11 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 40.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 649045
Weight: 2.28ct
Size: 10 x 8 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 13.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 698555
Weight: 1.34ct
Size: 6.3 x 5.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 8.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 681724
Weight: 0.87ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 15.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 431646
Weight: 1.53ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 16.13
Item in Stock
More Options & Item Details
Add to Cart
ID: 498316
Weight: 4.41ct (total)
Size: 10.1 x 5.1 mm
Clarity: VVS-VS
Content: 4 pcs
Price: $ 46.57
Item in Stock
More Options & Item Details
Add to Cart
ID: 692635
Weight: 102.56ct
Size: 29.1 x 28.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 43.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 699716
Weight: 0.59ct
Size: 5 x 5 mm (calibrated)
Clarity: VVS
Price: $ 5.66
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 593620
Weight: 2.53ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 18.71
Item in Stock
More Options & Item Details
Add to Cart
ID: 642160
Weight: 3.61ct
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 25.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 349010
Weight: 2.56ct
Size: 27.8 x 3.5 mm
Clarity: VVS
Content: 1 pc
Price: $ 107.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 723295
Weight: 1.54ct
Size: 7.5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 14.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 635469
Weight: 1.06ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 30.53
Item in Stock
More Options & Item Details
Add to Cart
ID: 729948
Weight: 35.81ct
Size: 31.1 x 21.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 34.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 584136
Weight: 3.51ct
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 23.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 460869
Weight: 3.24ct
Size: 10 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 29.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 669019
Weight: 0.91ct
Size: 5.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 829.92
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
664
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

Great for buying gemstones, came with authenticity certs. Will buy again someday!

Posted By Uggadugga in May, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Loved the lot buy options

Posted By BDG in October, 2024
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 -> 9 star ratings

I am very pleased with the ways you can filter your searches on this site, finding exactly what I want with little knowledge of what I am looking for is surprisingly easy!

Posted By Leo in March, 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 -> 8 star ratings

Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use

Posted By DrD in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I enjoy doing buisness with GemSelect. It is always a pleasure and you get what you ordered!

Posted By Ballpark in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Im not a jeweler, I buy for my personal use. My dad was a jewelry maker and I love gemstones.

Posted By Andie in September, 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

Always excellent quality and service from GemSelect

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

Overall Rating -> 10 star ratings

Great for buying gemstones, came with authenticity certs. Will buy again someday!

Posted By Uggadugga in May, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Loved the lot buy options

Posted By BDG in October, 2024
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 -> 9 star ratings

I am very pleased with the ways you can filter your searches on this site, finding exactly what I want with little knowledge of what I am looking for is surprisingly easy!

Posted By Leo in March, 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 -> 8 star ratings

Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use

Posted By DrD in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I enjoy doing buisness with GemSelect. It is always a pleasure and you get what you ordered!

Posted By Ballpark in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Im not a jeweler, I buy for my personal use. My dad was a jewelry maker and I love gemstones.

Posted By Andie in September, 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