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: 394031
Weight: 42.59ct
Size: 39.2 x 19.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 56.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 639920
Weight: 15.65ct
Size: 22 x 13.9 mm
Clarity: VS
Content: 1 pc
Price: $ 109.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 692710
Weight: 25.91ct
Size: 20 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 181.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 606003
Weight: 5.81ct
Size: 14 x 10 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 63.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 359625
Weight: 28.75ct
Size: 22.1 x 16.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 75.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 623668
Weight: 7.50ct
Size: 13.8 x 11.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 127.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 380856
Weight: 1.19ct
Size: 9 x 6 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 78.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 409989
Weight: 2.94ct (total)
Size: 7.7 x 5 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 14.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 390557
Weight: 1.69ct (total)
Size: 5 x 3 mm (calibrated)
Clarity: VS
Content: 6 pcs
Price: $ 108.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 491766
Weight: 87.88ct (total)
Size: 23.4 x 19.5 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 103.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 694205
Weight: 19.70ct
Size: 23.3 x 17.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 59.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 619195
Weight: 13.67ct (total)
Size: 14 x 12 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 62.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 513401
Weight: 1.17ct
Size: 5.6 x 5.6 mm
Clarity: VVS
Content: 1 pc
Price: $ 126.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 586702
Weight: 30.25ct
Size: 30.1 x 17.9 mm
Clarity: Transparent
Content: 1 pc
Price: $ 199.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 693332
Weight: 94.13ct
Size: 41.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 65.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 609088
Weight: 2.39ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 78.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 649036
Weight: 2.18ct
Size: 10 x 8 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.53
Item in Stock
More Options & Item Details
Add to Cart
ID: 662091
Weight: 13.61ct
Size: 14 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 32.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 384795
Weight: 10.67ct
Size: 28.1 x 13.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 96.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 471074
Weight: 43.20ct
Size: 33.3 x 22.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 45.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 694301
Weight: 21.94ct
Size: 27 x 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 54.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 686794
Weight: 1.14ct (total)
Size: 6.1 x 4.2 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 24.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 484212
Weight: 11.91ct
Size: 15.5 x 13 mm
Clarity: Opaque
Content: 1 pc
Price: $ 71.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 558507
Weight: 1.82ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 4.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 669279
Weight: 18.77ct (total)
Size: 23 x 8.4 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 405.43
Item in Stock
More Options & Item Details
Add to Cart
ID: 473005
Weight: 12.90ct
Size: 18.9 x 13.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 115.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 660342
Weight: 18.54ct
Size: 16 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 37.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 608352
Weight: 30.85ct
Size: 25.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 48.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 514176
Weight: 27.28ct (total)
Size: 17 x 12.9 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 59.41
Item in Stock
More Options & Item Details
Add to Cart
ID: 366578
Weight: 1.03ct
Size: 8.4 x 5.2 mm
Clarity: VVS
Content: 1 pc
Price: $ 144.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 513160
Weight: avg. 1.00 ct / each
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Price: $ 9.06
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 601906
Weight: 9.22ct
Size: 16 x 13.8 mm
Clarity: VVS
Content: 1 pc
Price: $ 37.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 602229
Weight: 24.26ct (total)
Size: 25.6 x 16.1 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 107.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 492381
Weight: 7.59ct
Size: 15.6 x 13.5 mm
Clarity: Translucent
Content: 1 pc
Price: $ 23.79
Item in Stock
More Options & Item Details
Add to Cart
ID: 645365
Weight: 28.35ct
Size: 22.8 x 17.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 140.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 369577
Weight: 1.68ct
Size: 8.6 x 8.5 mm
Clarity: Transparent/Translucent
Content: 1 pc
Price: $ 59.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 668360
Weight: 38.28ct
Size: 27.8 x 14.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 191.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 693497
Weight: 13.66ct
Size: 16.9 x 10.2 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 452.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 470393
Weight: 94.59ct
Size: 38.2 x 20.4 mm
Clarity: VVS
Content: 1 pc
Price: $ 130.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 669735
Weight: 29.45ct
Size: 24.8 x 21.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 73.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 359778
Weight: 29.74ct
Size: 22 x 16.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 78.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 471618
Weight: 9.14ct
Size: 17.1 x 12.7 mm
Clarity: Translucent
Content: 1 pc
Price: $ 84.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 674917
Weight: 18.52ct
Size: 22.5 x 19.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 16.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 329378
Weight: 0.97ct
Size: 6.8 x 4.2 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 103.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 693346
Weight: 4.96ct
Size: 10.7 x 6.7 mm
Clarity: VS
Content: 1 pc
Price: $ 137.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 526855
Weight: 2.65ct
Size: 8.8 x 7.7 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 192.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 387572
Weight: 7.58ct
Size: 12 x 12 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 488.57
Item in Stock
More Options & Item Details
Add to Cart
ID: 219857
Weight: 9.09ct
Size: 16 x 12 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 53.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 484041
Weight: 65.85ct
Size: 25.7 x 22.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 130.39
Item in Stock
More Options & Item Details
Add to Cart
ID: 390040
Weight: 1.27ct
Size: 12.1 x 3.9 mm
Clarity: SI
Content: 1 pc
Price: $ 82.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 524594
Weight: 1.46ct
Size: 6.3 x 6 mm
Clarity: VS
Content: 1 pc
Price: $ 134.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 696778
Weight: 7.99ct
Size: 18.2 x 7.7 mm
Clarity: SI
Content: 1 pc
Price: $ 639.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 693536
Weight: 0.73ct
Size: 5.8 x 4.9 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 36.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 568864
Weight: 9.80ct
Size: 20 x 13.2 mm
Clarity: SI-I1
Content: 1 pc
Price: $ 530.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 674295
Weight: 9.45ct
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 124.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 545007
Weight: 2.83ct
Size: 8.9 x 6.3 mm
Clarity: SI
Content: 1 pc
Price: $ 214.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 510930
Weight: 41.05ct (total)
Size: 20 x 15.7 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 73.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 668517
Weight: 31.32ct
Size: 25 x 15 mm
Clarity: Opaque
Content: 1 pc
Price: $ 156.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 471438
Weight: 149.36ct
Size: 51.1 x 31.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 164.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 413712
Weight: 10.94ct
Size: 14 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 361.02
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
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

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones. .

Posted By Steven M. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love Gem Select! When you order what you see is what you get. As soon as you make payment that particular gem is taken off the photo album. That way the one you select is a one of that kind.

Posted By Desertchick in March, 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

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

This was a great time as always. The only problem I had was deciding between all the beautiful and affordable stones that met my requirements. I love shopping for sapphires!

Posted By Phoenix in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy and to the point

Posted By Victorius in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

When I need a specific stone, gem select is my go to shop. Always a good experience and a great product.

Posted By LeAnn in April, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Excited to see

Posted By Ss in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I'm happy.

Posted By Ray 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

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones. .

Posted By Steven M. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love Gem Select! When you order what you see is what you get. As soon as you make payment that particular gem is taken off the photo album. That way the one you select is a one of that kind.

Posted By Desertchick in March, 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

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

This was a great time as always. The only problem I had was deciding between all the beautiful and affordable stones that met my requirements. I love shopping for sapphires!

Posted By Phoenix in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy and to the point

Posted By Victorius in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

When I need a specific stone, gem select is my go to shop. Always a good experience and a great product.

Posted By LeAnn in April, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Excited to see

Posted By Ss in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I'm happy.

Posted By Ray 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