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: 411628
Weight: 3.27ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 151.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 619974
Weight: 13.00ct
Size: 16 x 16 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 65.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 529689
Weight: 15.70ct
Size: 18.6 x 15.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 49.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 462924
Weight: 2.37ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 65.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 206879
Weight: 2.37ct (total)
Size: 4 mm (calibrated)
Clarity: VS-SI
Content: 9 pcs
Price: $ 140.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 237441
Weight: 31.44ct
Size: 34.2 x 16.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 103.75
Item in Stock
More Options & Item Details
Add to Cart
ID: 470042
Weight: 46.72ct (total)
Size: 15 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 29.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 623881
Weight: 57.73ct
Size: 39.3 x 27.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 70.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 503095
Weight: 6.08ct
Size: 15 x 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 822.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 437944
Weight: 21.74ct
Size: 23.6 x 11.7 mm
Clarity: VS
Content: 1 pc
Price: $ 573.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 692347
Weight: 24.65ct
Size: 20 x 15 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 172.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 612073
Weight: 12.95ct
Size: 16 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 51.29
Item in Stock
More Options & Item Details
Add to Cart
ID: 371476
Weight: 30.02ct
Size: 30 x 22 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 158.51
Item in Stock
More Options & Item Details
Add to Cart
ID: 608860
Weight: 9.62ct (total)
Size: 12 x 10 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 177.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 675212
Weight: 13.00ct
Size: 19.4 x 13.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 33.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 694482
Weight: 19.52ct
Size: 18 x 18 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 136.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 618058
Weight: 31.65ct (total)
Size: 25 x 18 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 75.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 492113
Weight: 6.39ct
Size: 17.8 x 9.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 18.47
Item in Stock
More Options & Item Details
Add to Cart
ID: 521325
Weight: 12.84ct
Size: 22.1 x 11.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 338.98
Item in Stock
More Options & Item Details
Add to Cart
ID: 413697
Weight: 15.10ct
Size: 15 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 498.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 674986
Weight: 29.24ct
Size: 28.5 x 19.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 26.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 589779
Weight: 3.06ct
Size: 10 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 76.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 378646
Weight: 1.67ct
Size: 7.5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 4,342.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 678331
Weight: 2.17ct
Size: 7.6 x 7.2 mm
Clarity: VS
Content: 1 pc
Price: $ 78.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 448563
Weight: 1.13ct
Size: 7.9 x 5.3 mm
Clarity: VVS
Content: 1 pc
Price: $ 544.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 522410
Weight: 20.80ct
Size: 32.3 x 16.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 137.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 584122
Weight: 9.86ct
Size: 16.9 x 12.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 93.19
Item in Stock
More Options & Item Details
Add to Cart
ID: 471800
Weight: 2.61ct (total)
Size: 7.5 x 5.3 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 10.33
Item in Stock
More Options & Item Details
Add to Cart
ID: 586518
Weight: 27.02ct
Size: 26.7 x 23.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 178.33
Item in Stock
More Options & Item Details
Add to Cart
ID: 520174
Weight: 2.29ct
Size: 8 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 15.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 521477
Weight: 153.32ct
Size: 36.6 x 29.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 404.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 690882
Weight: 0.41ct (total)
Size: 3.6 x 3.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 15.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 583671
Weight: 1.44ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 38.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 564689
Weight: 30.59ct (total)
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 69.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 552032
Weight: 11.09ct
Size: 17 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 29.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 671072
Weight: 25.58ct
Size: 30.6 x 16.9 mm
Clarity: Translucent
Content: 1 pc
Price: $ 66.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 472832
Weight: 4.17ct
Size: 14.3 x 10.4 mm
Clarity: Transparent
Content: 1 pc
Price: $ 57.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 543902
Weight: 0.17ct
Size: 3.5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 369.49
Item in Stock
More Options & Item Details
Add to Cart
ID: 693325
Weight: 136.79ct
Size: 49.5 x 33.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 95.21
Item in Stock
More Options & Item Details
Add to Cart
ID: 670624
Weight: 1.33ct
Size: 7.1 x 4.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 39.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 645621
Weight: 23.73ct
Size: 23.8 x 15.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 97.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 587110
Weight: 2.90ct
Size: 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 76.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 555885
Weight: 7.67ct
Size: 14.9 x 11.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 58.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 685584
Weight: 42.68ct
Size: 30 x 22 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 42.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 470842
Weight: 10.69ct
Size: 11.7 x 11.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 448.98
Item in Stock
More Options & Item Details
Add to Cart
ID: 693545
Weight: 43.66ct
Size: 43.3 x 22.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 26.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 696120
Weight: 34.44ct
Size: 36.2 x 25 mm
Clarity: Opaque
Content: 1 pc
Price: $ 23.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 513269
Weight: 1.41ct
Size: 6.7 x 5.4 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 142.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 394691
Weight: 8.77ct
Size: 12 x 12 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 57.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 522985
Weight: 41.37ct
Size: 30 x 22 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 273.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 522378
Weight: 24.38ct (total)
Size: 19.2 x 17.3 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 439.01
Item in Stock
More Options & Item Details
Add to Cart
ID: 674628
Weight: 18.73ct
Size: 23.3 x 12.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 40.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 645828
Weight: 25.96ct
Size: 40 x 14 mm
Clarity: Opaque
Content: 1 pc
Price: $ 81.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 645910
Weight: 11.14ct
Size: 18.9 x 12.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 34.75
Item in Stock
More Options & Item Details
Add to Cart
ID: 639274
Weight: 81.18ct
Size: 27.8 x 25.3 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 681.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 486785
Weight: 45.71ct
Size: 37.9 x 18.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 66.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 256350
Weight: 19.58ct
Size: 18.2 x 16.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 344.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 553148
Weight: 2.48ct
Size: 7 x 7 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 56.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 691704
Weight: 1.04ct
Size: 7 x 5 mm (calibrated)
Clarity: SI-I1
Content: 1 pc
Price: $ 62.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 344438
Weight: 236.30ct
Size: 38.2 x 36.2 mm
Clarity: Transparent/Translucent
Content: 1 pc
Price: $ 649.83
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
13
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 -> 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

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 -> 9 star ratings

I wish there were options for jewelry settings

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

everything was fine

Posted By Marc in January, 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 -> 10 star ratings

Good products

Posted By Brave in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have bought many stones from GemsSelect and have been very satisfied with all!I will continue to buy and recommend this site!

Posted By DG in July, 2024
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 -> 10 star ratings

It was very good and concise.

Posted By Whydothey 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 -> 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

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 -> 9 star ratings

I wish there were options for jewelry settings

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

everything was fine

Posted By Marc in January, 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 -> 10 star ratings

Good products

Posted By Brave in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have bought many stones from GemsSelect and have been very satisfied with all!I will continue to buy and recommend this site!

Posted By DG in July, 2024
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 -> 10 star ratings

It was very good and concise.

Posted By Whydothey 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