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: 725728
Weight: 0.39ct
Size: 5 x 5 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 3.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 432835
Weight: 42.24ct
Size: 28.9 x 27.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 35.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 693464
Weight: 2.42ct
Size: 7 x 6.5 mm
Clarity: VS
Content: 1 pc
Price: $ 80.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 685177
Weight: 9.76ct
Size: 17.7 x 9.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 10.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 713391
Weight: 17.64ct
Size: 20 x 15 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 148.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 693887
Weight: 67.41ct
Size: 46.5 x 29 mm
Clarity: Opaque
Content: 1 pc
Price: $ 46.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 726186
Weight: 0.80ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 31.69
Item in Stock
More Options & Item Details
Add to Cart
ID: 727945
Weight: 0.77ct
Size: 6.1 x 4.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 4.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 462007
Weight: 3.52ct (total)
Size: 12 x 6 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 41.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 400232
Weight: 6.12ct (total)
Size: 9 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 20.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 577343
Weight: 5.58ct
Size: 14.8 x 10.6 mm
Clarity: Transparent
Content: 1 pc
Price: $ 43.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 673216
Weight: 1.21ct
Size: 7.1 x 5.9 mm
Clarity: VS
Content: 1 pc
Price: $ 29.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 337585
Weight: 6.70ct (total)
Size: 4.5 mm (calibrated)
Clarity: Transparent
Content: 10 pcs
Price: $ 61.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 567455
Weight: 0.20ct (total)
Size: 3 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 430.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 255624
Weight: 0.83ct (total)
Size: 4 mm (calibrated)
Clarity: VS
Content: 5 pcs
Price: $ 172.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 718451
Weight: 0.09ct (total)
Size: 2.1 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 86.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 542798
Weight: 1.57ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 12.43
Item in Stock
More Options & Item Details
Add to Cart
ID: 550593
Weight: 26.93ct (total)
Size: 20.4 x 14.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 40.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 674643
Weight: 1.02ct (total)
Size: 8 x 4 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 7.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 676333
Weight: 9.74ct
Size: 17 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 27.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 699660
Weight: 1.07ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 10.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 602218
Weight: 3.42ct
Size: 12 x 10 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 31.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 712238
Weight: 2.85ct (total)
Size: 10.1 x 5.3 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 7.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 673070
Weight: 6.28ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 17.71
Item in Stock
More Options & Item Details
Add to Cart
ID: 480920
Weight: 1.99ct (total)
Size: 5.6 x 3.8 mm
Clarity: VS
Content: 4 pcs
Price: $ 16.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 712239
Weight: 1.94ct
Size: 8.1 x 6.6 mm
Clarity: VS
Content: 1 pc
Price: $ 46.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 410076
Weight: 2.27ct (total)
Size: 7.2 x 5.3 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 10.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 545581
Weight: 1.39ct
Size: 8 x 8 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 10.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 420744
Weight: 12.87ct
Size: 21 x 10 mm
Clarity: Opaque
Content: 1 pc
Price: $ 101.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 539702
Weight: 2.06ct
Size: 7 x 7 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 40.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 414284
Weight: 10.68ct
Size: 14 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 70.49
Item in Stock
More Options & Item Details
Add to Cart
ID: 656301
Weight: 6.21ct
Size: 13.6 x 10.7 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 52.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 464476
Weight: 4.17ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VS
Content: 10 pcs
Price: $ 38.53
Item in Stock
More Options & Item Details
Add to Cart
ID: 410268
Weight: 6.65ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 43.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 714786
Weight: 0.80ct
Size: 5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 24.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 689363
Weight: 4.39ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 24.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 518167
Weight: 15.23ct
Size: 25.2 x 15.5 mm
Clarity: Translucent
Content: 1 pc
Price: $ 58.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 411813
Weight: 2.78ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 3 pcs
Price: $ 128.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 567464
Weight: 0.19ct (total)
Size: 2.9 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 409.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 634906
Weight: 3.63ct
Size: 10.4 x 7.5 mm
Clarity: Transparent
Content: 1 pc
Price: $ 18.65
Item in Stock
More Options & Item Details
Add to Cart
ID: 476878
Weight: 33.08ct
Size: 18.3 x 15.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 130.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 547617
Weight: 2.06ct
Size: 6.3 x 6.3 mm
Clarity: VS
Content: 1 pc
Price: $ 41.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 739119
Weight: 1.07ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 9.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 485359
Weight: 7.28ct
Size: 15 x 15 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 17.47
Item in Stock
More Options & Item Details
Add to Cart
ID: 689348
Weight: 0.18ct
Size: 3.8 x 2.8 mm
Clarity: VS
Content: 1 pc
Price: $ 10.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 534178
Weight: 2.13ct
Size: 9 x 9 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 13.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 706422
Weight: 8.14ct
Size: 12.9 x 11.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 16.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 409587
Weight: 12.78ct (total)
Size: 14 x 10 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 84.35
Item in Stock
More Options & Item Details
Add to Cart
ID: 710768
Weight: 2.21ct
Size: 12 x 6 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 5.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 725875
Weight: 0.70ct
Size: 6 x 6 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 6.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 694291
Weight: 16.09ct
Size: 26.1 x 15.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 48.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 711618
Weight: 30.57ct
Size: 27 x 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 55.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 453128
Weight: 4.77ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 6 pcs
Price: $ 44.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 663137
Weight: 28.48ct (total)
Size: 21.8 x 14.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 20.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 515483
Weight: 35.86ct (total)
Size: 24.7 x 14.8 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 43.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 481414
Weight: 1.02ct
Size: 7.4 x 5 mm
Clarity: SI
Content: 1 pc
Price: $ 26.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 728203
Weight: 0.91ct
Size: 6.4 x 5.2 mm
Clarity: Transparent
Content: 1 pc
Price: $ 5.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 725278
Weight: 0.88ct
Size: 10.2 x 3.2 mm
Clarity: VS
Content: 1 pc
Price: $ 36.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 570393
Weight: 1.40ct
Size: 7 x 5 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 33.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 637054
Weight: 0.99ct
Size: 7.9 x 5.7 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 52.27
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
726
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

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I was looking for a small gift for a friend- the process is the same as every other time and was very simple, and she even got her gift early! On the downside, there's no way to easily keep track of multiple Shipping Addresses, so if I want to send a gift to Friend A and to Friend B, I have to overwrite everything and it's a fair bit clunky in that regard.

Posted By Jezzi in June, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I love wide range of stones. Always have my preference.

Posted By Ray in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

love these guys been ordering since 2000 maybe

Posted By JHT in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.

Posted By Darkstar in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love browsing the site and everything is easy to find. There is just so much I get lost for hours. Sometimes I wish there were videos of some gems, but other than that I love shopping with GemSelect and I have referred the site to many people many times. I work in the jewelry industry myself and I love to show off what Ive had made with my gems from GemSelect! Thank you

Posted By Antennaesglow in July, 2024
Source: Bizrate

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

GemSelect website simple to use. I recommend it to non-trade clients looking for gems.

Posted By GemJocky in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

All Good

Posted By Boru in July, 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

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I was looking for a small gift for a friend- the process is the same as every other time and was very simple, and she even got her gift early! On the downside, there's no way to easily keep track of multiple Shipping Addresses, so if I want to send a gift to Friend A and to Friend B, I have to overwrite everything and it's a fair bit clunky in that regard.

Posted By Jezzi in June, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I love wide range of stones. Always have my preference.

Posted By Ray in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

love these guys been ordering since 2000 maybe

Posted By JHT in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.

Posted By Darkstar in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love browsing the site and everything is easy to find. There is just so much I get lost for hours. Sometimes I wish there were videos of some gems, but other than that I love shopping with GemSelect and I have referred the site to many people many times. I work in the jewelry industry myself and I love to show off what Ive had made with my gems from GemSelect! Thank you

Posted By Antennaesglow in July, 2024
Source: Bizrate

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

GemSelect website simple to use. I recommend it to non-trade clients looking for gems.

Posted By GemJocky in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

All Good

Posted By Boru in July, 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