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: 389597
Weight: 2.65ct (total)
Size: 7.5 x 6 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 17.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 493459
Weight: 6.82ct
Size: 8.7 x 8.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 9.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 533287
Weight: 1.85ct
Size: 8.4 x 5.6 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 109.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 724950
Weight: 1.24ct
Size: 9.6 x 4 mm
Clarity: VVS
Content: 1 pc
Price: $ 52.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 691754
Weight: 0.48ct (total)
Size: 3.7 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 18.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 495462
Weight: 23.14ct (total)
Size: 19.8 x 12.6 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 33.11
Item in Stock
More Options & Item Details
Add to Cart
ID: 357445
Weight: 3.94ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 10 pcs
Price: $ 23.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 414271
Weight: 2.77ct
Size: 16.7 x 4.7 mm
Clarity: VS
Content: 1 pc
Price: $ 132.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 449696
Weight: 6.41ct (total)
Size: 8.1 x 7 mm
Clarity: Transparent
Content: 4 pcs
Price: $ 42.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 663326
Weight: 5.12ct
Size: 12 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.29
Item in Stock
More Options & Item Details
Add to Cart
ID: 671080
Weight: 27.54ct
Size: 26.6 x 17.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 71.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 526895
Weight: 1.07ct
Size: 6.9 x 5.2 mm
Clarity: VS
Content: 1 pc
Price: $ 23.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 304530
Weight: 1.48ct
Size: 8.4 x 5.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 83.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 555596
Weight: 1.57ct
Size: 7.4 x 5.1 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 41.45
Item in Stock
More Options & Item Details
Add to Cart
ID: 433615
Weight: 30.12ct
Size: 33.7 x 23.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 39.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 708004
Weight: 16.57ct (total)
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 15.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 672687
Weight: 1.82ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 43.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 392910
Weight: 3.72ct (total)
Size: 7 x 7 mm (calibrated)
Clarity: VS-SI
Content: 2 pcs
Price: $ 98.21
Item in Stock
More Options & Item Details
Add to Cart
ID: 640043
Weight: 1.66ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 13.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 519899
Weight: 31.84ct
Size: 24.3 x 15.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 37.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 694545
Weight: 13.19ct
Size: 15 x 15 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 110.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 480917
Weight: 2.15ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: VS
Content: 4 pcs
Price: $ 19.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 699695
Weight: 0.50ct
Size: 4.5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 30.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 560545
Weight: 4.44ct
Size: 12 x 10 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 41.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 429725
Weight: 2.98ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 59.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 456770
Weight: 1.66ct (total)
Size: 6 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 15.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 546340
Weight: 1.25ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 9.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 694842
Weight: 5.38ct
Size: 11 x 11 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 30.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 664798
Weight: 1.15ct
Size: 8 x 6 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 12.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 450618
Weight: 2.13ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 16.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 711535
Weight: 9.13ct
Size: 20 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 24.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 711809
Weight: 6.34ct
Size: 14 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 16.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 349578
Weight: 1.70ct
Size: 18.9 x 3.4 mm
Clarity: VVS
Content: 1 pc
Price: $ 49.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 573662
Weight: 2.06ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: SI
Content: 2 pcs
Price: $ 54.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 642958
Weight: 2.51ct
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 23.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 573143
Weight: 4.40ct (total)
Size: 12 x 6.1 mm
Clarity: VVS
Content: 2 pcs
Price: $ 46.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 474824
Weight: 23.68ct (total)
Size: 20.8 x 13.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 56.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 365604
Weight: 4.49ct
Size: 11 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 44.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 675841
Weight: 5.99ct
Size: 14.1 x 10.4 mm
Clarity: Transparent
Content: 1 pc
Price: $ 35.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 481296
Weight: 30.79ct
Size: 30.9 x 23.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 43.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 720245
Weight: 1.27ct
Size: 6.7 x 5.6 mm
Clarity: VS
Content: 1 pc
Price: $ 182.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 315517
Weight: 3.56ct
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 13.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 492924
Weight: 6.51ct
Size: 14 x 10 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 47.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 708491
Weight: 1.53ct
Size: 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 31.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 721799
Weight: 11.90ct
Size: 14.2 x 12.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 14.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 639109
Weight: 1.32ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 11.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 694249
Weight: 0.86ct
Size: 8.7 x 3.9 mm
Clarity: VVS
Content: 1 pc
Price: $ 25.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 332121
Weight: 7.84ct
Size: 13 x 13 mm (calibrated)
Clarity: Transparent/Translucent
Content: 1 pc
Price: $ 21.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 604522
Weight: 25.86ct
Size: 33.8 x 21 mm
Clarity: Opaque
Content: 1 pc
Price: $ 19.75
Item in Stock
More Options & Item Details
Add to Cart
ID: 440536
Weight: 2.61ct (total)
Size: 4.7 mm
Clarity: VS
Content: 5 pcs
Price: $ 57.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 560857
Weight: 1.41ct
Size: 8.6 x 4.9 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 122.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 441154
Weight: 7.57ct
Size: 13.2 x 9.5 mm
Clarity: VVS
Content: 1 pc
Price: $ 249.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 603058
Weight: 4.58ct
Size: 10 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 60.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 300687
Weight: 41.05ct
Size: 30.5 x 26.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 108.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 449432
Weight: 2.64ct
Size: 22.5 x 3.8 mm
Clarity: VVS
Content: 1 pc
Price: $ 104.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 664123
Weight: 2.07ct
Size: 9.3 x 6.4 mm
Clarity: Transparent
Content: 1 pc
Price: $ 9.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 472601
Weight: 6.23ct
Size: 11.5 x 10.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 24.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 687585
Weight: 8.73ct (total)
Size: 15.4 x 8.7 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 25.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 736126
Weight: 10.51ct
Size: 20 x 16.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 259.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 708497
Weight: 0.88ct
Size: 5.5 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 18.17
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
647
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 -> 8 star ratings

Loved the lot buy options

Posted By BDG in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy and to the point

Posted By Victorius in May, 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

Good. I ts very user friendly.

Posted By Shalini in June, 2025
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 -> 9 star ratings

It is a good experience, it is easy to view the item, and easy to check out.

Posted By Neo in November, 2024
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

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 -> 10 star ratings

I have bought from you before and have found your gems exceed my expectations. I have been very satisfied with all gems sent to me. I will be back. Thanks....

Posted By Dork in September, 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 -> 8 star ratings

Loved the lot buy options

Posted By BDG in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy and to the point

Posted By Victorius in May, 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

Good. I ts very user friendly.

Posted By Shalini in June, 2025
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 -> 9 star ratings

It is a good experience, it is easy to view the item, and easy to check out.

Posted By Neo in November, 2024
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

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 -> 10 star ratings

I have bought from you before and have found your gems exceed my expectations. I have been very satisfied with all gems sent to me. I will be back. Thanks....

Posted By Dork in September, 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