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: 650610
Weight: 5.62ct
Size: 15.9 x 14.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 23.81
Item in Stock
More Options & Item Details
Add to Cart
ID: 435778
Weight: 7.59ct
Size: 15.2 x 11.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 24.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 448522
Weight: 30.20ct
Size: 29.8 x 19.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 59.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 695003
Weight: 5.40ct
Size: 11.1 x 7.5 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 162.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 736385
Weight: 1.26ct
Size: 8 x 6 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 44.45
Item in Stock
More Options & Item Details
Add to Cart
ID: 464228
Weight: 3.96ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VS
Content: 10 pcs
Price: $ 36.59
Item in Stock
More Options & Item Details
Add to Cart
ID: 664126
Weight: 2.34ct
Size: 10 x 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 11.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 673876
Weight: 0.63ct
Size: 7.8 x 5.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 26.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 685160
Weight: 0.65ct
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 6.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 456776
Weight: 4.95ct
Size: 14 x 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 45.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 695219
Weight: 8.37ct
Size: 14 x 12 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 251.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 267239
Weight: 1.09ct
Size: 6.9 x 5.8 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 107.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 656282
Weight: 0.82ct
Size: 7 x 7 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 19.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 568496
Weight: 3.37ct
Size: 11 x 9 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 32.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 459825
Weight: 7.47ct
Size: 18 x 13 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 69.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 675434
Weight: 2.54ct
Size: 14 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 7.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 396394
Weight: 8.00ct (total)
Size: 9 mm (calibrated)
Clarity: VS-SI
Content: 2 pcs
Price: $ 37.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 699086
Weight: 0.86ct
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 7.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 391065
Weight: 4.83ct
Size: 12 x 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 191.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 480850
Weight: 5.75ct (total)
Size: 4.7 x 4.7 mm
Clarity: Transparent
Content: 30 pcs
Price: $ 49.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 498889
Weight: 1.81ct (total)
Size: 5.2 x 4.1 mm
Clarity: VS-SI
Content: 4 pcs
Price: $ 238.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 388100
Weight: 2.69ct (total)
Size: 4.6 x 4.5 mm
Clarity: VVS-VS
Content: 6 pcs
Price: $ 17.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 587785
Weight: 12.85ct (total)
Size: 15.1 x 11 mm
Clarity: VS
Content: 2 pcs
Price: $ 50.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 463343
Weight: 5.26ct
Size: 14 x 10 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 41.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 594688
Weight: 20.21ct
Size: 20 x 15 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 160.07
Item in Stock
More Options & Item Details
Add to Cart
ID: 496391
Weight: 1.42ct (total)
Size: 6.9 x 3.5 mm
Clarity: VVS-VS
Content: 4 pcs
Price: $ 15.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 657296
Weight: 0.99ct
Size: 6 x 5.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 4.75
Item in Stock
More Options & Item Details
Add to Cart
ID: 698597
Weight: 0.69ct
Size: 5.6 x 4.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 4.14
Item in Stock
More Options & Item Details
Add to Cart
ID: 396338
Weight: 0.86ct
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 54.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 601382
Weight: 11.71ct (total)
Size: 14 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 62.29
Item in Stock
More Options & Item Details
Add to Cart
ID: 719624
Weight: 1.02ct
Size: 5.9 x 4.9 mm
Clarity: VVS
Content: 1 pc
Price: $ 18.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 517540
Weight: 1.93ct
Size: 9 x 9 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 17.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 515422
Weight: 25.97ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 26.75
Item in Stock
More Options & Item Details
Add to Cart
ID: 655773
Weight: 0.73ct
Size: 7 x 7 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 17.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 407841
Weight: 5.34ct
Size: 12 x 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 292.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 456395
Weight: 1.80ct (total)
Size: 6 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 16.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 486662
Weight: 7.08ct
Size: 15.4 x 10.7 mm
Clarity: Translucent
Content: 1 pc
Price: $ 72.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 646965
Weight: 1.20ct
Size: 9 x 7 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 43.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 709907
Weight: 0.41ct
Size: 6 x 4 mm (calibrated)
Clarity: VVS-VS
Price: $ 3.44
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 661904
Weight: 1.75ct
Size: 8 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 14.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 678393
Weight: 24.09ct (total)
Size: 25.8 x 13.6 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 28.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 719361
Weight: 0.93ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 7.81
Item in Stock
More Options & Item Details
Add to Cart
ID: 541143
Weight: 13.18ct
Size: 14 x 14 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 19.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 694507
Weight: 30.17ct
Size: 28.9 x 19.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 32.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 737177
Weight: 37.89ct
Size: 40.4 x 11.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 3.79
Item in Stock
More Options & Item Details
Add to Cart
ID: 416305
Weight: 1.73ct
Size: 17.3 x 3.5 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 54.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 620848
Weight: 4.09ct (total)
Size: 12.1 x 6 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 43.19
Item in Stock
More Options & Item Details
Add to Cart
ID: 664874
Weight: 3.14ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 22.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 721388
Weight: 0.50ct
Size: 8 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 9.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 738692
Weight: 0.57ct
Size: 5 x 5 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 5.13
Item in Stock
More Options & Item Details
Add to Cart
ID: 662753
Weight: 1.46ct (total)
Size: 6 x 6 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 12.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 409940
Weight: 4.97ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 32.81
Item in Stock
More Options & Item Details
Add to Cart
ID: 728135
Weight: 0.04ct
Size: 2 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 16.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 650505
Weight: 27.72ct
Size: 25.6 x 23.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 13.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 546988
Weight: 26.64ct
Size: 18.2 x 13.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 21.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 709840
Weight: 2.93ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 24.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 724430
Weight: 59.23ct
Size: 33.1 x 24 mm
Clarity: VVS
Content: 1 pc
Price: $ 534.49
Item in Stock
More Options & Item Details
Add to Cart
ID: 735102
Weight: 0.28ct
Size: 4 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 14.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 612051
Weight: 1.13ct
Size: 5.9 x 5.6 mm
Clarity: Transparent
Content: 1 pc
Price: $ 7.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 519618
Weight: 1.90ct
Size: 9 x 7 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 175.56
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
711
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 -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

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

Loved everything. High quality, quick shipping, and authentication included.

Posted By Chris in March, 2025
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

excellent deals-excellent service-fair prices

Posted By JD in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience shopping and finding what I was looking for, the only improvement I could think of would be allowing to filter more than one size at a time.

Posted By Tlicious04 in September, 2024
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 -> 10 star ratings

So far, my experience was great...Thanks

Posted By Kaydi in May, 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 -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

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

Loved everything. High quality, quick shipping, and authentication included.

Posted By Chris in March, 2025
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

excellent deals-excellent service-fair prices

Posted By JD in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience shopping and finding what I was looking for, the only improvement I could think of would be allowing to filter more than one size at a time.

Posted By Tlicious04 in September, 2024
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 -> 10 star ratings

So far, my experience was great...Thanks

Posted By Kaydi in May, 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