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: 698558
Weight: 3.49ct
Size: 11 x 9 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 29.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 725274
Weight: 0.46ct
Size: 9.7 x 2.4 mm
Clarity: VVS
Content: 1 pc
Price: $ 19.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 394868
Weight: 3.27ct (total)
Size: 7.2 x 5.7 mm
Clarity: VS-SI
Content: 2 pcs
Price: $ 59.69
Item in Stock
More Options & Item Details
Add to Cart
ID: 387700
Weight: 2.08ct (total)
Size: 4 x 3 mm (calibrated)
Clarity: VS
Content: 10 pcs
Price: $ 184.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 422582
Weight: 4.82ct
Size: 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 31.81
Item in Stock
More Options & Item Details
Add to Cart
ID: 350915
Weight: 3.82ct (total)
Size: 3.6 x 3.6 mm
Clarity: VS-SI
Content: 15 pcs
Price: $ 35.29
Item in Stock
More Options & Item Details
Add to Cart
ID: 551378
Weight: 1.60ct
Size: 7.2 x 5.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 6.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 662974
Weight: 0.90ct
Size: 6.1 x 5.4 mm
Clarity: Transparent
Content: 1 pc
Price: $ 5.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 395279
Weight: 3.81ct
Size: 9.6 x 9.2 mm
Clarity: Transparent
Content: 1 pc
Price: $ 25.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 694818
Weight: 3.08ct
Size: 8 x 6 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 92.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 357598
Weight: 4.03ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 10 pcs
Price: $ 26.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 459986
Weight: 3.37ct
Size: 11 x 9 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 31.14
Item in Stock
More Options & Item Details
Add to Cart
ID: 693473
Weight: 3.34ct
Size: 12 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 639575
Weight: 2.96ct
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 14.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 655363
Weight: 5.02ct
Size: 14 x 10 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 66.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 477188
Weight: 1.88ct
Size: 8.7 x 6.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 14.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 696908
Weight: 24.00ct
Size: 33.2 x 9.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 2.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 700389
Weight: 1.26ct
Size: 6.5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 75.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 715438
Weight: 1.68ct
Size: 8.3 x 6.3 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 16.13
Item in Stock
More Options & Item Details
Add to Cart
ID: 597644
Weight: 5.07ct (total)
Size: 8 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 7.43
Item in Stock
More Options & Item Details
Add to Cart
ID: 739108
Weight: 0.40ct
Size: 5 x 5 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 3.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 684231
Weight: 1.98ct (total)
Size: 6 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 2.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 516465
Weight: 51.53ct
Size: 35.1 x 23.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 53.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 658434
Weight: 15.77ct
Size: 16 x 16 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 23.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 680795
Weight: 1.19ct
Size: 6 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 35.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 673943
Weight: 4.90ct
Size: 14 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 70.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 650650
Weight: 1.22ct (total)
Size: 7 x 4.7 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 11.71
Item in Stock
More Options & Item Details
Add to Cart
ID: 715499
Weight: 0.21ct
Size: 3.8 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 13.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 572146
Weight: 12.61ct (total)
Size: 14.9 x 11 mm
Clarity: VS
Content: 2 pcs
Price: $ 49.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 476021
Weight: 5.89ct
Size: 14 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 37.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 279603
Weight: 1.90ct (total)
Size: 4 mm (calibrated)
Clarity: VS
Content: 9 pcs
Price: $ 112.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 471999
Weight: 9.18ct
Size: 15 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 2,423.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 721350
Weight: 5.33ct
Size: 15.5 x 10.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 19.19
Item in Stock
More Options & Item Details
Add to Cart
ID: 552439
Weight: 10.32ct
Size: 21.9 x 15.6 mm
Clarity: Translucent
Content: 1 pc
Price: $ 27.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 454629
Weight: 29.77ct (total)
Size: 20.8 x 13.7 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 39.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 398132
Weight: 1.23ct
Size: 14.2 x 3.4 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 35.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 590694
Weight: 3.82ct (total)
Size: 8 x 8 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 40.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 726007
Weight: 1.15ct (total)
Size: 8 x 4 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 45.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 724686
Weight: 0.19ct
Size: 3.8 mm
Clarity: VS
Content: 1 pc
Price: $ 31.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 722764
Weight: 0.66ct
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 19.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 483732
Weight: 63.50ct
Size: 25.3 x 20.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 167.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 544627
Weight: 0.69ct
Size: 6.2 x 4.3 mm
Clarity: SI-I1
Content: 1 pc
Price: $ 18.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 733067
Weight: 0.74ct
Size: 6 x 6 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 6.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 497582
Weight: 1.73ct
Size: 8.1 x 6.6 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 45.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 696056
Weight: 0.46ct
Size: 5 x 4 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 16.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 712224
Weight: 1.20ct
Size: 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 23.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 711835
Weight: 19.23ct
Size: 30 x 18.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 38.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 398153
Weight: 1.29ct
Size: 21.6 x 2.9 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 37.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 521064
Weight: 2.82ct
Size: 9.8 x 7.6 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 67.01
Item in Stock
More Options & Item Details
Add to Cart
ID: 730483
Weight: 2.44ct
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 21.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 685698
Weight: 0.95ct
Size: 5.7 mm
Clarity: VS
Content: 1 pc
Price: $ 17.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 689173
Weight: 0.90ct
Size: 9.2 x 5.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 8.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 695010
Weight: 65.25ct
Size: 51.8 x 32.6 mm
Clarity: Translucent
Content: 1 pc
Price: $ 62.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 381649
Weight: 2.05ct
Size: 8.4 x 6.6 mm
Clarity: VS
Content: 1 pc
Price: $ 101.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 691678
Weight: 0.58ct
Size: 5 x 4.3 mm
Clarity: VVS
Content: 1 pc
Price: $ 48.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 527922
Weight: 5.25ct
Size: 11 x 9 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 37.98
Item in Stock
More Options & Item Details
Add to Cart
ID: 710224
Weight: 3.06ct
Size: 10 x 10 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 25.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 686490
Weight: 2.80ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 3.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 713905
Weight: 19.50ct
Size: 20 x 15 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 163.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 383611
Weight: 27.60ct
Size: 28.5 x 22.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 54.65
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
578
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

very good

Posted By Son Gift in January, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use

Posted By DrD in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring

Posted By Desertchick in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I've made several purchases through GemSelect in the past, although not within the last six months. Their gems are always beautiful and I have never had an issue with their prices or their stones. Even when I'm not buying, I love scrolling through their website, which is very user friendly. I especially appreciate being able to change the listing order to your own liking, such as most to least expensive, largest to smallest, etc. As with most online orders, however, I think the shipping charges are not commensurate with the actual weight of the items shipped.

Posted By DrLHS in November, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

I wish there were options for jewelry settings

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good shopping experience. Website is relatively easy to use. Prices are good.

Posted By Bleep in August, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

the gems were smaller than I thought but I was at fault for not reading the complete discrimination

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I always enjoy the selection and the unique cuts I can find here. I would love to see more hex cuts tho! Maybe some rose cuts too!

Posted By Blkfower83 in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Everything went well, the payment options are easily declined but, but once sorted out, everything is smooth. I have bought from GemSelect before and am consistently satisfied with them.

Posted By Gabe in August, 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

very good

Posted By Son Gift in January, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use

Posted By DrD in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring

Posted By Desertchick in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I've made several purchases through GemSelect in the past, although not within the last six months. Their gems are always beautiful and I have never had an issue with their prices or their stones. Even when I'm not buying, I love scrolling through their website, which is very user friendly. I especially appreciate being able to change the listing order to your own liking, such as most to least expensive, largest to smallest, etc. As with most online orders, however, I think the shipping charges are not commensurate with the actual weight of the items shipped.

Posted By DrLHS in November, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

I wish there were options for jewelry settings

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good shopping experience. Website is relatively easy to use. Prices are good.

Posted By Bleep in August, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

the gems were smaller than I thought but I was at fault for not reading the complete discrimination

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I always enjoy the selection and the unique cuts I can find here. I would love to see more hex cuts tho! Maybe some rose cuts too!

Posted By Blkfower83 in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Everything went well, the payment options are easily declined but, but once sorted out, everything is smooth. I have bought from GemSelect before and am consistently satisfied with them.

Posted By Gabe in August, 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