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: 382709
Weight: 41.15ct
Size: 27.5 x 21 mm
Clarity: Opaque
Content: 1 pc
Price: $ 61.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 728051
Weight: 1.60ct
Size: 8 x 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 9.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 496495
Weight: 2.42ct
Size: 8.6 x 7.2 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 50.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 487772
Weight: 20.36ct
Size: 19.8 x 19.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 15.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 392455
Weight: 7.30ct (total)
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 48.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 610310
Weight: 19.98ct
Size: 24.5 x 22.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 19.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 688808
Weight: 0.71ct
Size: 9.2 x 5.1 mm
Clarity: VS
Content: 1 pc
Price: $ 6.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 716884
Weight: 1.57ct
Size: 8 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 6,280.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 382345
Weight: 9.97ct
Size: 17.8 x 10.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 52.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 655781
Weight: 9.33ct
Size: 14 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 14.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 671990
Weight: 1.12ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 26.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 725716
Weight: 1.58ct (total)
Size: 6 x 6 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 15.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 683055
Weight: 9.04ct
Size: 12.7 x 11.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 54.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 555561
Weight: 29.82ct
Size: 22.4 x 15.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 36.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 431357
Weight: 2.59ct (total)
Size: 4.8 x 4.7 mm
Clarity: VS
Content: 4 pcs
Price: $ 27.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 381746
Weight: 3.30ct (total)
Size: 7.2 x 5.4 mm
Clarity: VVS-VS
Content: 4 pcs
Price: $ 130.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 712802
Weight: 7.83ct (total)
Size: 14 x 7 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 20.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 714350
Weight: 0.47ct
Size: 4.3 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 14.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 681866
Weight: 0.90ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 7.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 390438
Weight: 0.75ct
Size: 8 x 5 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 37.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 735016
Weight: 5.04ct
Size: 11 x 9.5 mm
Clarity: VS
Content: 1 pc
Price: $ 211.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 675430
Weight: 3.03ct
Size: 17.6 x 6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 8.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 706895
Weight: 1.09ct
Size: 10 x 5 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 2.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 503101
Weight: 1.70ct
Size: 14.7 x 3.7 mm
Clarity: VVS
Content: 1 pc
Price: $ 56.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 546939
Weight: 2.38ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 37.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 674644
Weight: 1.00ct (total)
Size: 8.3 x 4.2 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 7.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 712348
Weight: 4.00ct
Size: 12 x 8 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 10.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 475924
Weight: 3.36ct
Size: 10 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 23.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 491598
Weight: 15.86ct (total)
Size: 19.3 x 9.8 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 15.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 495791
Weight: 1.35ct
Size: 6.9 x 5.7 mm
Clarity: VVS
Content: 1 pc
Price: $ 90.98
Item in Stock
More Options & Item Details
Add to Cart
ID: 622561
Weight: 1.16ct
Size: 7.3 x 5.5 mm
Clarity: VS
Content: 1 pc
Price: $ 24.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 658539
Weight: 8.60ct
Size: 22.9 x 11.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 30.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 602895
Weight: 1.51ct
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 13.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 555098
Weight: 6.06ct
Size: 15.2 x 10.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 11.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 669535
Weight: 30.92ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 92.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 533958
Weight: 1.51ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 13.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 479567
Weight: 2.15ct (total)
Size: 10.1 x 5.1 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 22.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 636639
Weight: 1.33ct
Size: 8.5 x 6.5 mm
Clarity: VS
Content: 1 pc
Price: $ 38.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 723725
Weight: 1.03ct
Size: 7 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 9.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 677916
Weight: avg. 0.13 ct / each
Size: 2.6 x 2.6 mm
Clarity: Opaque
Price: $ 64.17
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 701065
Weight: 1.31ct
Size: 6.5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 78.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 324631
Weight: 5.10ct (total)
Size: 9.3 x 7.9 mm
Clarity: Transparent/Translucent
Content: 2 pcs
Price: $ 16.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 389097
Weight: 4.19ct
Size: 9.5 mm (calibrated)
Clarity: VVS-VS
Price: $ 25.14
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 693726
Weight: 12.89ct
Size: 15.6 x 10.6 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 427.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 387722
Weight: 3.19ct (total)
Size: 4.6 x 4.5 mm
Clarity: VVS-VS
Content: 6 pcs
Price: $ 21.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 433949
Weight: 4.29ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 28.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 481373
Weight: 12.46ct
Size: 22.4 x 12.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 8.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 700944
Weight: 0.61ct
Size: 5 x 5 mm (calibrated)
Clarity: VVS
Price: $ 5.86
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 706717
Weight: 5.05ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 12.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 618802
Weight: 1.14ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 528.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 490372
Weight: 5.79ct
Size: 14 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 42.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 719795
Weight: 0.83ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 6.97
Item in Stock
More Options & Item Details
Add to Cart
ID: 519113
Weight: 28.91ct
Size: 24 x 15.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 33.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 719008
Weight: 0.58ct
Size: 5.2 x 4 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 10.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 553122
Weight: 1.21ct
Size: 7 x 5 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 7.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 715709
Weight: 1.00ct
Size: 6.1 x 5.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 63.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 426846
Weight: 15.01ct (total)
Size: 14 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 69.35
Item in Stock
More Options & Item Details
Add to Cart
ID: 523840
Weight: 15.62ct
Size: 20.1 x 13.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 123.71
Item in Stock
More Options & Item Details
Add to Cart
ID: 649869
Weight: 9.50ct
Size: 18.4 x 13.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 6.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 709992
Weight: 0.43ct
Size: 6 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 3.61
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
261
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

nothing but good. always have a great selection. I am a hobbyist and only collect. Great prices. I could take all day looking at a small percent of all the gemstone, fantastic

Posted By Steve m. in February, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Love the ease of access. Easy to find what you are looking for, and fair pricing.

Posted By NickBehnke in October, 2024
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 -> 10 star ratings

I searched for the size, dimensions and quality of the stones I was looking for and then compared and ordered.

Posted By Tim in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I would recommend gem select yo everyone Fast service and no problems

Posted By Steve in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is a wonderful website

Posted By Bryan Diaz in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Site is easy to navigate and the variety is great and how often new products are added is also great.

Posted By Jhidron in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Muy serios y muy oportunos para el envo

Posted By Veronica 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 -> 10 star ratings

nothing but good. always have a great selection. I am a hobbyist and only collect. Great prices. I could take all day looking at a small percent of all the gemstone, fantastic

Posted By Steve m. in February, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Love the ease of access. Easy to find what you are looking for, and fair pricing.

Posted By NickBehnke in October, 2024
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 -> 10 star ratings

I searched for the size, dimensions and quality of the stones I was looking for and then compared and ordered.

Posted By Tim in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I would recommend gem select yo everyone Fast service and no problems

Posted By Steve in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is a wonderful website

Posted By Bryan Diaz in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Site is easy to navigate and the variety is great and how often new products are added is also great.

Posted By Jhidron in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Muy serios y muy oportunos para el envo

Posted By Veronica 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