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: 668709
Weight: 13.76ct
Size: 17.5 x 12.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 297.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 573134
Weight: 3.97ct (total)
Size: 11.9 x 5.9 mm
Clarity: VVS
Content: 2 pcs
Price: $ 41.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 350727
Weight: 1.38ct
Size: 18.8 x 3.3 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 40.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 546880
Weight: 3.28ct
Size: 11 x 9 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 25.98
Item in Stock
More Options & Item Details
Add to Cart
ID: 449464
Weight: 3.02ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 5 pcs
Price: $ 19.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 636634
Weight: 3.04ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 87.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 700495
Weight: 48.07ct
Size: 37.2 x 23.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 25.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 573141
Weight: 4.45ct (total)
Size: 12 x 6 mm
Clarity: VVS
Content: 2 pcs
Price: $ 46.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 708314
Weight: 7.10ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 11.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 691638
Weight: 0.67ct
Size: 5.7 x 4.4 mm
Clarity: VS
Content: 1 pc
Price: $ 46.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 689006
Weight: 4.01ct (total)
Size: 10.1 x 8.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 22.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 431725
Weight: 2.69ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 4 pcs
Price: $ 28.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 541137
Weight: 7.49ct
Size: 12 x 12 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 11.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 712699
Weight: 4.78ct
Size: 12 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 12.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 692915
Weight: 24.90ct
Size: 20 x 15 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 209.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 683994
Weight: 0.38ct
Size: 4.5 x 3.7 mm
Clarity: VS
Content: 1 pc
Price: $ 15.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 505523
Weight: 6.73ct
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 84.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 713778
Weight: 0.80ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 13.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 656682
Weight: 0.80ct
Size: 7 x 5 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 13.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 410079
Weight: 2.53ct (total)
Size: 7.8 x 5.5 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 12.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 498837
Weight: 0.93ct
Size: 5.7 mm
Clarity: VS
Content: 1 pc
Price: $ 49.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 695014
Weight: 47.75ct
Size: 43.6 x 29.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 57.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 632001
Weight: 11.82ct
Size: 22.4 x 16.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 53.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 445972
Weight: 6.89ct
Size: 13.8 x 11 mm
Clarity: VVS
Content: 1 pc
Price: $ 50.29
Item in Stock
More Options & Item Details
Add to Cart
ID: 673934
Weight: 15.28ct
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 219.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 719921
Weight: 0.81ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 6.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 499267
Weight: 1.78ct
Size: 6.7 x 6.7 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 31.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 546658
Weight: 3.65ct
Size: 9 x 9 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 28.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 396015
Weight: 9.73ct
Size: 14 x 14 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 20.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 692158
Weight: 1.00ct
Size: 6.1 x 4.8 mm
Clarity: SI-I1
Content: 1 pc
Price: $ 60.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 691364
Weight: 1.22ct
Size: 6 mm (calibrated)
Clarity: SI-I1
Content: 1 pc
Price: $ 73.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 325561
Weight: 0.76ct (total)
Size: 4 mm (calibrated)
Clarity: VVS-VS
Content: 5 pcs
Price: $ 205.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 715761
Weight: 12.13ct
Size: 18 x 13 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 116.45
Item in Stock
More Options & Item Details
Add to Cart
ID: 668898
Weight: 9.83ct
Size: 20.8 x 9 mm
Clarity: Transparent
Content: 1 pc
Price: $ 212.33
Item in Stock
More Options & Item Details
Add to Cart
ID: 409941
Weight: 6.14ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 40.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 552955
Weight: 1.73ct
Size: 8 x 6 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 10.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 720520
Weight: 0.88ct
Size: 5 x 5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 63.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 692357
Weight: 22.77ct
Size: 20 x 15 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 191.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 647380
Weight: 1.66ct
Size: 8.6 x 6.1 mm
Clarity: VS
Content: 1 pc
Price: $ 37.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 734755
Weight: 5.46ct
Size: 12.4 x 10.7 mm
Clarity: VS
Content: 1 pc
Price: $ 229.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 735814
Weight: 39.54ct
Size: 37.3 x 19.9 mm
Clarity: Translucent
Content: 1 pc
Price: $ 32.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 488044
Weight: 39.98ct
Size: 35.2 x 25.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 26.39
Item in Stock
More Options & Item Details
Add to Cart
ID: 693203
Weight: 34.68ct
Size: 27.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 19.14
Item in Stock
More Options & Item Details
Add to Cart
ID: 342497
Weight: 23.32ct
Size: 20.4 x 19.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 61.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 665034
Weight: 1.64ct
Size: 9 x 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 11.81
Item in Stock
More Options & Item Details
Add to Cart
ID: 279602
Weight: 2.14ct (total)
Size: 4 mm (calibrated)
Clarity: VS
Content: 9 pcs
Price: $ 127.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 684237
Weight: 1.86ct (total)
Size: 6 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 2.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 450108
Weight: 2.63ct (total)
Size: 7 x 5.3 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 34.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 447579
Weight: 2.28ct
Size: 8.3 x 7.8 mm
Clarity: VS
Content: 1 pc
Price: $ 108.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 490508
Weight: 4.85ct (total)
Size: 6 mm (calibrated)
Clarity: VS
Content: 5 pcs
Price: $ 51.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 360630
Weight: 8.30ct
Size: 13 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 43.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 735246
Weight: 2.41ct
Size: 8.7 x 6.6 mm
Clarity: VS
Content: 1 pc
Price: $ 115.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 624995
Weight: 2.47ct
Size: 9 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 24.29
Item in Stock
More Options & Item Details
Add to Cart
ID: 485744
Weight: 7.39ct
Size: 11 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 62.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 710489
Weight: avg. 3.79 ct / each
Size: 12 x 8 mm (calibrated)
Clarity: Opaque
Price: $ 2.09
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 694271
Weight: 0.69ct
Size: 11.3 x 3 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 20.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 718032
Weight: 1.02ct
Size: 6 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 30.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 605817
Weight: 22.28ct (total)
Size: 20.7 x 11.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 34.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 453158
Weight: 1.61ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 14.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 694316
Weight: 1.08ct
Size: 9.8 x 4.3 mm
Clarity: VVS
Content: 1 pc
Price: $ 32.40
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
404
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

It was a good experience looking for and finding a nice amethyst stone

Posted By N/a in May, 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

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

I found what I was looking for...had to look up millimeters to inches. It would be nice to see something, like a quarter, in the pix to show relative size. I plan on buy loose gemstones for every month in the calendar

Posted By TheP in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Appreciated the selection. Jadeite is hard to find under $100. Website has alot of variety.

Posted By Jess in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very professional site

Posted By JR in January, 2025
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

nothing but good. always have a great selection. I am a hobbyist and only collect. Great prices. I could take all day looking at a small percent of all the gemstone, fantastic

Posted By Steve m. in February, 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

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

It was a good experience looking for and finding a nice amethyst stone

Posted By N/a in May, 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

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

I found what I was looking for...had to look up millimeters to inches. It would be nice to see something, like a quarter, in the pix to show relative size. I plan on buy loose gemstones for every month in the calendar

Posted By TheP in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Appreciated the selection. Jadeite is hard to find under $100. Website has alot of variety.

Posted By Jess in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very professional site

Posted By JR in January, 2025
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

nothing but good. always have a great selection. I am a hobbyist and only collect. Great prices. I could take all day looking at a small percent of all the gemstone, fantastic

Posted By Steve m. in February, 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

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