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: 554027
Weight: 25.22ct
Size: 16 x 16 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 30.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 721340
Weight: 7.72ct
Size: 17.9 x 15.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 27.79
Item in Stock
More Options & Item Details
Add to Cart
ID: 669582
Weight: 10.32ct
Size: 14.8 x 11.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 61.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 653430
Weight: 6.65ct
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 20.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 721179
Weight: 1.07ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 8.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 678138
Weight: 0.12ct
Size: 2.7 x 2.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 72.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 521226
Weight: 23.22ct
Size: 33.5 x 9.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 16.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 422744
Weight: 0.68ct
Size: 6.6 x 3.8 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 26.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 717965
Weight: 0.08ct (total)
Size: 2.1 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 76.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 554046
Weight: 1.11ct
Size: 6.8 x 4.7 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 29.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 714094
Weight: 1.17ct
Size: 8 x 6 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 63.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 400999
Weight: 7.45ct
Size: 11 x 11 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 24.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 366488
Weight: 1.20ct
Size: 8 x 5.3 mm
Clarity: VVS
Content: 1 pc
Price: $ 168.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 480812
Weight: 5.15ct (total)
Size: 4.6 x 4.5 mm
Clarity: Transparent
Content: 40 pcs
Price: $ 44.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 500813
Weight: 11.38ct
Size: 16 x 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 88.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 393959
Weight: 33.42ct
Size: 36.5 x 22.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 44.11
Item in Stock
More Options & Item Details
Add to Cart
ID: 277585
Weight: 12.85ct (total)
Size: 14 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 67.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 578581
Weight: 12.98ct
Size: 23.2 x 19.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 25.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 712763
Weight: 6.50ct (total)
Size: 14 x 7 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 17.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 533308
Weight: 2.31ct
Size: 9 x 7 mm (calibrated)
Clarity: VS
Price: $ 16.74
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 723008
Weight: 0.60ct
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 18.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 424651
Weight: 0.89ct
Size: 5.8 x 5.1 mm
Clarity: VS
Content: 1 pc
Price: $ 35.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 694481
Weight: 18.76ct
Size: 18 x 18 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 157.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 418309
Weight: 13.00ct (total)
Size: 16.2 x 11.2 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 25.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 685567
Weight: 2.27ct
Size: 8 x 8 mm (calibrated)
Clarity: VVS-VS
Price: $ 21.79
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 723718
Weight: 1.20ct
Size: 7 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 11.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 434477
Weight: 1.89ct
Size: 7 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 49.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 517348
Weight: 1.51ct
Size: 9.9 x 6.4 mm
Clarity: VS
Content: 1 pc
Price: $ 139.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 634136
Weight: 9.38ct
Size: 17.3 x 12.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 49.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 424595
Weight: 0.76ct
Size: 5.4 x 5.2 mm
Clarity: VS
Content: 1 pc
Price: $ 30.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 479080
Weight: 1.83ct (total)
Size: 9.9 x 5 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 19.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 402382
Weight: 2.89ct (total)
Size: 5 mm (calibrated)
Clarity: VS
Content: 4 pcs
Price: $ 118.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 661871
Weight: 5.63ct
Size: 20.2 x 8.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 17.57
Item in Stock
More Options & Item Details
Add to Cart
ID: 706919
Weight: 2.10ct
Size: 8 x 8 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 5.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 390743
Weight: 2.67ct (total)
Size: 6.2 x 4.2 mm
Clarity: VS
Content: 5 pcs
Price: $ 172.49
Item in Stock
More Options & Item Details
Add to Cart
ID: 398109
Weight: 1.19ct
Size: 14 x 3.3 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 34.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 734817
Weight: 4.32ct
Size: 11 x 9 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 25.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 711232
Weight: 1.21ct
Size: 7.3 x 5.9 mm
Clarity: VS
Content: 1 pc
Price: $ 29.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 710037
Weight: 0.90ct
Size: 10.1 x 4.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 7.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 714205
Weight: 1.81ct
Size: 10 x 8 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 144.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 548540
Weight: 0.99ct
Size: 5.8 x 5.5 mm
Clarity: VS
Content: 1 pc
Price: $ 20.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 348646
Weight: 15.42ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 20.35
Item in Stock
More Options & Item Details
Add to Cart
ID: 733125
Weight: 3.45ct
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 31.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 559067
Weight: 2.08ct
Size: 7 x 7 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 42.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 391928
Weight: 2.43ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VS-SI
Content: 2 pcs
Price: $ 64.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 518682
Weight: 18.31ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 21.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 418578
Weight: 6.07ct
Size: 15.7 x 11 mm
Clarity: Translucent
Content: 1 pc
Price: $ 12.01
Item in Stock
More Options & Item Details
Add to Cart
ID: 728224
Weight: 0.04ct
Size: 2 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 16.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 662897
Weight: 0.85ct
Size: 6 x 5.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 5.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 561450
Weight: 6.05ct
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 15.97
Item in Stock
More Options & Item Details
Add to Cart
ID: 619152
Weight: 7.48ct
Size: 13 x 13 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 37.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 494010
Weight: 4.81ct
Size: 13 x 8.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 17.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 431207
Weight: 2.84ct (total)
Size: 6 x 6 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 67.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 297135
Weight: 27.24ct
Size: 25.4 x 20.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 35.95
Item in Stock
More Options & Item Details
Add to Cart
ID: 416363
Weight: 1.20ct
Size: 12.2 x 3.5 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 38.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 401367
Weight: 22.27ct
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 40.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 415992
Weight: 1.11ct
Size: 17.7 x 2.8 mm
Clarity: VS
Content: 1 pc
Price: $ 35.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 346905
Weight: 1.93ct
Size: 15.1 x 4.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 84.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 626899
Weight: 0.93ct
Size: 5.5 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 18.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 537798
Weight: 1.14ct
Size: 9.8 x 3.6 mm
Clarity: VS
Content: 1 pc
Price: $ 103.84
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
147
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

I have ordered from Genselect before and always had a great experience. My go to source!

Posted By Kycaver in October, 2024
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

It was easy and to the point

Posted By Victorius in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good Hoping you will increase your inventory especially in the 6mm Thanks

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Muy serios y muy oportunos para el envo

Posted By Veronica in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Very professional site

Posted By JR in January, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Okay thank you.

Posted By Bepc61 in March, 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 -> 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

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

I have ordered from Genselect before and always had a great experience. My go to source!

Posted By Kycaver in October, 2024
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

It was easy and to the point

Posted By Victorius in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good Hoping you will increase your inventory especially in the 6mm Thanks

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Muy serios y muy oportunos para el envo

Posted By Veronica in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Very professional site

Posted By JR in January, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Okay thank you.

Posted By Bepc61 in March, 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 -> 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

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