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: 582790
Weight: 0.99ct
Size: 7.7 x 5.7 mm
Clarity: VVS
Content: 1 pc
Price: $ 47.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 466383
Weight: 7.74ct (total)
Size: 8 mm (calibrated)
Clarity: Translucent
Content: 6 pcs
Price: $ 286.07
Item in Stock
More Options & Item Details
Add to Cart
ID: 467845
Weight: 5.95ct (total)
Size: 3.2 mm
Clarity: Transparent
Content: 30 pcs
Price: $ 39.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 459884
Weight: 3.20ct
Size: 10.7 x 8.6 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 29.57
Item in Stock
More Options & Item Details
Add to Cart
ID: 706487
Weight: 10.03ct
Size: 14 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 20.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 371620
Weight: 4.92ct (total)
Size: 7 x 7 mm (calibrated)
Clarity: VS
Content: 5 pcs
Price: $ 38.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 711017
Weight: 1.06ct
Size: 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 21.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 450945
Weight: 2.99ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 4 pcs
Price: $ 27.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 465962
Weight: 7.07ct
Size: 13 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 14.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 722752
Weight: 20.60ct
Size: 24.3 x 13.4 mm
Clarity: Translucent
Content: 1 pc
Price: $ 173.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 447947
Weight: 25.29ct (total)
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 100.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 688244
Weight: 0.18ct (total)
Size: 2.6 x 2.6 mm
Clarity: VS
Content: 2 pcs
Price: $ 8.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 479652
Weight: 1.21ct
Size: 10.1 x 5.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 12.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 325802
Weight: 66.95ct
Size: 21.8 x 18.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 441.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 515857
Weight: 27.13ct
Size: 24 x 14.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 31.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 409872
Weight: 10.34ct (total)
Size: 14 x 10 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 49.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 499208
Weight: 2.25ct
Size: 12.1 x 4.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 405.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 306925
Weight: 1.59ct
Size: 7.5 x 6.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 5.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 546345
Weight: 1.39ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 11.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 722671
Weight: 17.93ct
Size: 23.8 x 14.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 150.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 636560
Weight: 0.77ct
Size: 7.3 x 5.4 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 40.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 610149
Weight: 16.85ct (total)
Size: 19.8 x 13.5 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 20.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 710506
Weight: 6.17ct
Size: 12 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 4.07
Item in Stock
More Options & Item Details
Add to Cart
ID: 699616
Weight: 0.65ct
Size: 6.7 x 4.8 mm
Clarity: VS
Content: 1 pc
Price: $ 6.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 594088
Weight: 1.26ct
Size: 8 x 6 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 25.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 460420
Weight: 3.62ct
Size: 11 x 9 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 47.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 498277
Weight: 1.48ct
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 40.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 721824
Weight: 0.49ct
Size: 8 x 4 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 8.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 526544
Weight: 3.91ct
Size: 10.1 x 8.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 5.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 626189
Weight: 1.29ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 34.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 477785
Weight: 4.88ct
Size: 14 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 34.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 714354
Weight: 0.46ct
Size: 4.2 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 13.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 577727
Weight: 7.80ct
Size: 21.6 x 8.6 mm
Clarity: Transparent
Content: 1 pc
Price: $ 60.13
Item in Stock
More Options & Item Details
Add to Cart
ID: 669215
Weight: 6.10ct
Size: 18.4 x 9.5 mm
Clarity: Transparent
Content: 1 pc
Price: $ 131.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 663105
Weight: 1.58ct
Size: 6.8 x 6.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 9.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 390007
Weight: 0.70ct
Size: 9.4 x 4.2 mm
Clarity: SI
Content: 1 pc
Price: $ 30.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 664796
Weight: 2.07ct
Size: 9.4 x 7.6 mm
Clarity: Translucent
Content: 1 pc
Price: $ 14.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 478156
Weight: 1.18ct
Size: 10.8 x 6 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 155.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 678327
Weight: 4.40ct
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 5.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 712174
Weight: 7.15ct (total)
Size: 14 x 7 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 19.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 696126
Weight: 72.36ct
Size: 41.1 x 23.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 49.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 701014
Weight: 1.10ct
Size: 6 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 66.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 382334
Weight: 3.67ct (total)
Size: 3.2 mm
Clarity: VS
Content: 30 pcs
Price: $ 194.41
Item in Stock
More Options & Item Details
Add to Cart
ID: 650430
Weight: 26.16ct
Size: 29.2 x 21.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 15.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 636959
Weight: 28.23ct (total)
Size: 20.2 x 10.2 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 101.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 352936
Weight: 1.15ct
Size: 7.4 x 5.8 mm
Clarity: VS
Content: 1 pc
Price: $ 134.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 647275
Weight: 1.26ct
Size: 7.3 x 6.1 mm
Clarity: VS
Content: 1 pc
Price: $ 28.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 673542
Weight: 1.89ct
Size: 10 x 7.6 mm
Clarity: VVS
Content: 1 pc
Price: $ 45.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 410832
Weight: 5.19ct
Size: 12 x 10 mm (calibrated)
Clarity: Transparent
Price: $ 28.55
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 626292
Weight: 4.31ct
Size: 15.8 x 10 mm
Clarity: Translucent
Content: 1 pc
Price: $ 36.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 367087
Weight: 3.61ct (total)
Size: 8 mm (calibrated)
Clarity: Transparent/Translucent
Content: 2 pcs
Price: $ 23.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 711003
Weight: 12.70ct
Size: 18 x 13 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 33.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 438814
Weight: 1.67ct
Size: 6.5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 44.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 460176
Weight: 3.21ct
Size: 10 x 8 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 10.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 734683
Weight: 39.30ct
Size: 22.7 x 22.6 mm
Clarity: VVS
Content: 1 pc
Price: $ 314.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 720854
Weight: 1.05ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 8.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 578041
Weight: 1.23ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 64.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 722116
Weight: 0.65ct
Size: 5.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 31.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 685926
Weight: 30.21ct
Size: 29.9 x 20.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 16.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 658360
Weight: 23.78ct
Size: 22.8 x 22.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 48.79
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
167
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

I am very pleased with the ways you can filter your searches on this site, finding exactly what I want with little knowledge of what I am looking for is surprisingly easy!

Posted By Leo in March, 2025
Source: Bizrate

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

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 -> 8 star ratings

Loved the lot buy options

Posted By BDG in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I'm happy.

Posted By Ray in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Nice website I just don't know much about the quality until I receive the stone.

Posted By Becky in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I love gemstones. My father was a jeweler & I used to shop for stones for him.

Posted By Andie in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I found the website easy to work with. The gemstones are lovely.

Posted By Sophie-Tiger in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty 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

I am very pleased with the ways you can filter your searches on this site, finding exactly what I want with little knowledge of what I am looking for is surprisingly easy!

Posted By Leo in March, 2025
Source: Bizrate

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

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 -> 8 star ratings

Loved the lot buy options

Posted By BDG in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I'm happy.

Posted By Ray in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Nice website I just don't know much about the quality until I receive the stone.

Posted By Becky in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I love gemstones. My father was a jeweler & I used to shop for stones for him.

Posted By Andie in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I found the website easy to work with. The gemstones are lovely.

Posted By Sophie-Tiger in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty 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