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: 391064
Weight: 6.71ct
Size: 22.7 x 7.5 mm
Clarity: VS
Content: 1 pc
Price: $ 3,277.16
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: 344767
Weight: 1.77ct
Size: 10.5 x 6 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 191.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 447704
Weight: 0.98ct
Size: 6.6 x 5.3 mm
Clarity: VS
Content: 1 pc
Price: $ 622.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 495848
Weight: 2.56ct
Size: 8 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 119.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 548707
Weight: 56.33ct
Size: 37.5 x 23.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 89.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 256344
Weight: 31.12ct
Size: 21.4 x 20.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 653.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 525631
Weight: 1.90ct
Size: 9 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 292.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 601393
Weight: 25.47ct (total)
Size: 32.9 x 14.6 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 135.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 363367
Weight: 20.00ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 52.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 548283
Weight: 1.18ct
Size: 6.2 x 5.3 mm
Clarity: VS
Content: 1 pc
Price: $ 66.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 502119
Weight: 6.48ct
Size: 12.9 x 9.9 mm
Clarity: VS
Content: 1 pc
Price: $ 730.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 694298
Weight: 13.45ct
Size: 21.7 x 15.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 40.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 599537
Weight: 13.59ct
Size: 16 x 16 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 44.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 691365
Weight: 1.63ct
Size: 7.3 x 5.3 mm
Clarity: SI-I1
Content: 1 pc
Price: $ 97.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 577072
Weight: 9.42ct
Size: 16.4 x 12.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 72.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 671542
Weight: 45.23ct
Size: 39.3 x 27.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 116.69
Item in Stock
More Options & Item Details
Add to Cart
ID: 238783
Weight: 2.19ct (total)
Size: 4 mm (calibrated)
Clarity: VS
Content: 9 pcs
Price: $ 144.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 623469
Weight: 0.71ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 10.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 644905
Weight: 2.38ct
Size: 10 x 8 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 28.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 637207
Weight: 8.44ct
Size: 21.5 x 12.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 40.51
Item in Stock
More Options & Item Details
Add to Cart
ID: 481303
Weight: 48.61ct
Size: 40 x 22.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 69.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 536904
Weight: avg. 0.81 ct / each
Size: 7 mm (calibrated)
Clarity: Transparent
Price: $ 19.73
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 407921
Weight: 5.59ct
Size: 14 x 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 306.59
Item in Stock
More Options & Item Details
Add to Cart
ID: 394015
Weight: 58.74ct
Size: 31.5 x 25 mm
Clarity: Opaque
Content: 1 pc
Price: $ 64.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 645365
Weight: 28.35ct
Size: 22.8 x 17.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 140.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 514331
Weight: 29.23ct (total)
Size: 21.7 x 14.7 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 76.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 403850
Weight: 7.49ct
Size: 13 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 39.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 645452
Weight: 24.76ct
Size: 18.6 x 15.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 59.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 693806
Weight: 23.10ct
Size: 22.5 x 10.8 mm
Clarity: VS
Content: 1 pc
Price: $ 765.90
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: 407845
Weight: 6.37ct
Size: 13.3 x 9.8 mm
Clarity: VS
Content: 1 pc
Price: $ 349.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 618139
Weight: 2.76ct
Size: 10 x 8 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 91.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 427407
Weight: 15.88ct
Size: 18.5 x 12.3 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 377.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 513401
Weight: 1.17ct
Size: 5.6 x 5.6 mm
Clarity: VVS
Content: 1 pc
Price: $ 126.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 472004
Weight: 7.18ct
Size: 14 x 11.4 mm
Clarity: Translucent
Content: 1 pc
Price: $ 1,895.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 447676
Weight: 1.42ct
Size: 8.8 x 6.3 mm
Clarity: VS
Content: 1 pc
Price: $ 902.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 695450
Weight: 73.43ct
Size: 52.1 x 34.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 70.49
Item in Stock
More Options & Item Details
Add to Cart
ID: 645337
Weight: 2.31ct
Size: 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 10.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 438379
Weight: 13.54ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 53.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 646936
Weight: 1.37ct
Size: 7.9 x 5.5 mm
Clarity: SI
Content: 1 pc
Price: $ 41.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 470307
Weight: 5.85ct
Size: 11.8 x 9 mm
Clarity: Translucent
Content: 1 pc
Price: $ 35.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 475031
Weight: 1.48ct
Size: 7.7 x 5.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 5.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 677850
Weight: avg. 0.12 ct / each
Size: 2.5 x 2.4 mm
Clarity: Opaque
Price: $ 60.75
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 627837
Weight: 28.09ct
Size: 27 x 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 259.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 484654
Weight: 26.04ct
Size: 26.4 x 13.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 20.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 596896
Weight: 6.59ct (total)
Size: 11 x 9 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 78.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 565079
Weight: 0.25ct (total)
Size: 3 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 456.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 390557
Weight: 1.69ct (total)
Size: 5 x 3 mm (calibrated)
Clarity: VS
Content: 6 pcs
Price: $ 108.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 520166
Weight: 45.38ct
Size: 30.4 x 13.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 53.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 530144
Weight: 1.38ct
Size: 6.8 x 6.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 129.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 314397
Weight: 24.58ct
Size: 25.6 x 16.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 81.12
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: 683067
Weight: 30.49ct
Size: 30.4 x 14.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 292.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 471438
Weight: 149.36ct
Size: 51.1 x 31.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 164.44
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: 366640
Weight: 1.22ct
Size: 7.8 x 5.7 mm
Clarity: VVS
Content: 1 pc
Price: $ 171.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 415384
Weight: 1.10ct
Size: 6.7 x 5.8 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 726.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 650614
Weight: 5.59ct
Size: 16 x 8 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 23.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 422082
Weight: 1.37ct
Size: 10 x 5.7 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 79.03
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
4
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

Great site always looking for great deals and find them on this site

Posted By IRO5812 in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent selection and easy to use, well done site

Posted By Steph in December, 2024
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

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

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Loved the lot buy options

Posted By BDG in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have been buying gems for several years off and on and love their selection and great low prices. I started out wanting to get an example of each type of gem but after looking at all the types of gems and reading about them I realize it is almost impossible for me to do. It took me years just to read about them all. Gem Select is the best gem site you can find. For information or to buy. Steve M.

Posted By Stevee M. in January, 2025
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

I have found GemSelect to have the best selections of quality stones at a reasonable price. I like the packaging and the report availability.

Posted By Sam in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to find what I wanted

Posted By Villian in December, 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

Great site always looking for great deals and find them on this site

Posted By IRO5812 in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent selection and easy to use, well done site

Posted By Steph in December, 2024
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

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

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Loved the lot buy options

Posted By BDG in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have been buying gems for several years off and on and love their selection and great low prices. I started out wanting to get an example of each type of gem but after looking at all the types of gems and reading about them I realize it is almost impossible for me to do. It took me years just to read about them all. Gem Select is the best gem site you can find. For information or to buy. Steve M.

Posted By Stevee M. in January, 2025
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

I have found GemSelect to have the best selections of quality stones at a reasonable price. I like the packaging and the report availability.

Posted By Sam in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to find what I wanted

Posted By Villian in December, 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