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: 524011
Weight: 28.55ct
Size: 21.2 x 18.2 mm
Clarity: Transparent
Content: 1 pc
Price: $ 226.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 553726
Weight: 2.38ct
Size: 8.5 x 6.7 mm
Clarity: SI
Content: 1 pc
Price: $ 53.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 505435
Weight: 6.50ct
Size: 12 mm (calibrated)
Clarity: Opaque
Price: $ 89.48
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 492108
Weight: 7.12ct
Size: 19.7 x 9.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 20.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 477047
Weight: 33.92ct
Size: 23 x 15.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 122.11
Item in Stock
More Options & Item Details
Add to Cart
ID: 602278
Weight: 2.53ct
Size: 8 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 83.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 300453
Weight: 28.58ct
Size: 23.1 x 18.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 240.07
Item in Stock
More Options & Item Details
Add to Cart
ID: 382972
Weight: 36.94ct
Size: 27.9 x 22.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 73.14
Item in Stock
More Options & Item Details
Add to Cart
ID: 392193
Weight: 1.31ct
Size: 8 x 5.3 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 69.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 609893
Weight: 8.43ct
Size: 18.4 x 10.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 86.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 690787
Weight: 8.80ct
Size: 13 x 13 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 206.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 635842
Weight: 9.88ct
Size: 18.1 x 10 mm
Clarity: Opaque
Content: 1 pc
Price: $ 28.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 619157
Weight: 6.94ct
Size: 12 x 12 mm (calibrated)
Clarity: VVS
Price: $ 35.09
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 501048
Weight: 5.71ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 52.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 484137
Weight: 8.87ct (total)
Size: 9.1 x 8.6 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 58.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 421890
Weight: 0.88ct
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 90.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 597459
Weight: 2.36ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 155.76
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: 690766
Weight: 1.32ct
Size: 7 x 5 mm (calibrated)
Clarity: I1
Content: 1 pc
Price: $ 79.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 351445
Weight: 10.14ct
Size: 13 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 53.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 712049
Weight: 64.36ct (total)
Size: 25.4 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 142.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 588862
Weight: 83.59ct
Size: 55.2 x 35.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 283.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 407797
Weight: 12.27ct
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 32.39
Item in Stock
More Options & Item Details
Add to Cart
ID: 598291
Weight: 1.28ct
Size: 8.2 x 6.3 mm
Clarity: VS
Content: 1 pc
Price: $ 84.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 669204
Weight: 18.53ct
Size: 29.7 x 11.2 mm
Clarity: Transparent
Content: 1 pc
Price: $ 400.25
Item in Stock
More Options & Item Details
Add to Cart
ID: 603162
Weight: 2.00ct
Size: 8 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 546.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 447905
Weight: 123.42ct
Size: 65.1 x 33.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 162.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 442155
Weight: 3.89ct (total)
Size: 7 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 85.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 669018
Weight: 0.80ct
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 640.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 402579
Weight: 25.82ct
Size: 31.1 x 13.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 109.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 676221
Weight: 19.18ct
Size: 20.9 x 12.9 mm
Clarity: VVS
Content: 1 pc
Price: $ 207.14
Item in Stock
More Options & Item Details
Add to Cart
ID: 512017
Weight: 21.49ct
Size: 26.8 x 15.9 mm
Clarity: Translucent
Content: 1 pc
Price: $ 28.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 545331
Weight: 3.04ct
Size: 11.4 x 6.5 mm
Clarity: SI
Content: 1 pc
Price: $ 209.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 415530
Weight: 7.65ct
Size: 16 x 8.4 mm
Clarity: VS
Content: 1 pc
Price: $ 1,836.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 391975
Weight: 47.80ct
Size: 27 x 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 126.19
Item in Stock
More Options & Item Details
Add to Cart
ID: 564605
Weight: 0.36ct
Size: 4.5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 659.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 485282
Weight: 11.84ct (total)
Size: 13 x 13 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 62.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 600282
Weight: 109.25ct
Size: 46.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 82.20
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: 650425
Weight: 33.12ct
Size: 27.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 19.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 694763
Weight: 9.56ct
Size: 14 x 12 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 286.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 342504
Weight: 46.56ct (total)
Size: 20.3 x 19.1 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 93.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 530667
Weight: 1.74ct
Size: 6.6 x 6.4 mm
Clarity: VS
Content: 1 pc
Price: $ 135.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 348922
Weight: 56.08ct
Size: 36.6 x 33.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 74.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 574760
Weight: 3.29ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 86.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 348362
Weight: 25.96ct
Size: 30 x 22 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 137.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 699764
Weight: 19.20ct
Size: 17.8 x 15.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 18.43
Item in Stock
More Options & Item Details
Add to Cart
ID: 691589
Weight: 114.72ct
Size: 57.9 x 34.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 111.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 526451
Weight: avg. 1.08 ct / each
Size: 8 x 6 mm (calibrated)
Clarity: VS
Price: $ 17.83
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 562611
Weight: 14.93ct
Size: 16 x 10.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 39.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 679161
Weight: 1.17ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 90.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 529058
Weight: 1.88ct
Size: 9 x 7 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 17.38
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: 589843
Weight: 3.95ct (total)
Size: 12.1 x 6 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 69.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 467956
Weight: 1.56ct
Size: 7.9 x 6.6 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 92.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 586137
Weight: 11.48ct
Size: 16 x 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 75.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 475557
Weight: 20.07ct
Size: 29.2 x 18.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 39.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 470657
Weight: 17.33ct
Size: 17.6 x 16.4 mm
Clarity: SI
Content: 1 pc
Price: $ 9,531.50
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: 329090
Weight: 36.10ct
Size: 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 50.83
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
21
Choose Page
1 - 778

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 -> 8 star ratings

great experience

Posted By T in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 2025
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

Overall Rating -> 10 star ratings

I trust this company to deliver exactly what is offered. I have never had to return a selection of Gems. I appreciate the company's detailed description of their product. It helps this customer find mounts before the gems arrive. Any day of the year one can find a wide selection of gems, be it by price, color, cut, lot or single. Pricing does not jump all over the place and stays reasonable. Be assured your items will arrive in perfect condition as the company's shipping department does a great job.

Posted By Miss Sherrie in August, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

The checkout said the my ccv was invalid. i had to use another card.

Posted By Ron in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 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

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 -> 8 star ratings

great experience

Posted By T in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 2025
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

Overall Rating -> 10 star ratings

I trust this company to deliver exactly what is offered. I have never had to return a selection of Gems. I appreciate the company's detailed description of their product. It helps this customer find mounts before the gems arrive. Any day of the year one can find a wide selection of gems, be it by price, color, cut, lot or single. Pricing does not jump all over the place and stays reasonable. Be assured your items will arrive in perfect condition as the company's shipping department does a great job.

Posted By Miss Sherrie in August, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

The checkout said the my ccv was invalid. i had to use another card.

Posted By Ron in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 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

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