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: 696454
Weight: 37.31ct
Size: 35.8 x 11.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 4.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 451175
Weight: 1.37ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 12.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 655798
Weight: 1.30ct
Size: 8 x 8 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 31.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 721157
Weight: 0.47ct
Size: 8 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 3.95
Item in Stock
More Options & Item Details
Add to Cart
ID: 357444
Weight: 3.72ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 10 pcs
Price: $ 24.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 660664
Weight: 1.32ct
Size: 7.3 x 5.9 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 31.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 694300
Weight: 17.74ct
Size: 28.4 x 16.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 53.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 352550
Weight: 5.66ct
Size: 17.1 x 9 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 52.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 621631
Weight: 18.90ct (total)
Size: 16 x 12 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 29.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 670942
Weight: 0.39ct
Size: 5 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 14.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 500226
Weight: 1.67ct
Size: 11.9 x 6 mm
Clarity: VS
Price: $ 15.43
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 627852
Weight: 8.68ct
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 52.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 462931
Weight: 2.07ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 68.98
Item in Stock
More Options & Item Details
Add to Cart
ID: 526633
Weight: 2.08ct
Size: 9 x 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 21.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 648742
Weight: 15.79ct
Size: 23.6 x 17.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 9.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 551273
Weight: 2.97ct
Size: 10 x 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 26.81
Item in Stock
More Options & Item Details
Add to Cart
ID: 691995
Weight: 0.37ct (total)
Size: 3.2 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 14.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 681885
Weight: 10.44ct
Size: 14.6 x 12.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 62.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 650501
Weight: 8.89ct
Size: 18.5 x 13.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 6.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 700214
Weight: 46.05ct
Size: 35 x 20.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 24.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 543384
Weight: 0.65ct
Size: 5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 17.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 690288
Weight: 47.77ct
Size: 28.9 x 19.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 58.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 706476
Weight: 16.41ct
Size: 16 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 33.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 411743
Weight: 1.33ct
Size: 8 x 6 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 55.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 684246
Weight: 24.02ct
Size: 22.7 x 22.6 mm
Clarity: Transparent
Content: 1 pc
Price: $ 30.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 639066
Weight: 1.45ct
Size: 8 x 6 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 36.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 678673
Weight: 11.36ct
Size: 26.3 x 13.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 68.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 698911
Weight: 0.86ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 7.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 491756
Weight: 54.14ct (total)
Size: 22.8 x 16.1 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 63.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 721203
Weight: 0.43ct
Size: 8 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 3.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 728202
Weight: 0.72ct
Size: 5.7 x 4.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 4.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 574768
Weight: 2.92ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 77.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 385156
Weight: 8.48ct
Size: 22.7 x 13.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 69.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 550542
Weight: 29.43ct (total)
Size: 19.5 x 2.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 44.29
Item in Stock
More Options & Item Details
Add to Cart
ID: 574875
Weight: 2.82ct
Size: 10 x 7 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 74.45
Item in Stock
More Options & Item Details
Add to Cart
ID: 546739
Weight: 1.29ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 10.21
Item in Stock
More Options & Item Details
Add to Cart
ID: 517365
Weight: 1.04ct
Size: 6.8 x 5.9 mm
Clarity: VS
Content: 1 pc
Price: $ 92.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 653429
Weight: 8.00ct
Size: 15.8 x 11.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 24.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 521070
Weight: 2.10ct
Size: 9 x 7 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 49.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 732985
Weight: 0.72ct
Size: 5 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 14.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 707182
Weight: 1.81ct
Size: 8 x 8 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 4.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 431362
Weight: 2.47ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 4 pcs
Price: $ 26.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 376786
Weight: 6.38ct (total)
Size: 7.5 x 6.8 mm
Clarity: Transparent
Content: 4 pcs
Price: $ 58.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 590769
Weight: 5.59ct
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 52.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 537156
Weight: 1.40ct
Size: 6.4 x 5.8 mm
Clarity: VS
Content: 1 pc
Price: $ 124.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 674443
Weight: 14.38ct
Size: 19.1 x 15.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 24.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 273238
Weight: 22.81ct
Size: 20.3 x 19.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 60.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 728020
Weight: 0.72ct
Size: 5.8 x 4.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 4.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 725876
Weight: 0.71ct
Size: 6 x 6 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 6.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 457113
Weight: 2.49ct
Size: 11.4 x 8.2 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 23.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 686027
Weight: 3.16ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 3.79
Item in Stock
More Options & Item Details
Add to Cart
ID: 656583
Weight: 2.47ct
Size: 9 x 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 14.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 491665
Weight: 49.98ct (total)
Size: 19.4 x 13.8 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 58.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 435562
Weight: 11.92ct
Size: 18 x 13 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 39.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 732600
Weight: 0.48ct
Size: 5 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 18.43
Item in Stock
More Options & Item Details
Add to Cart
ID: 514716
Weight: 15.88ct
Size: 26.9 x 8.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 11.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 724424
Weight: 86.75ct
Size: 37 x 23.7 mm
Clarity: VVS
Content: 1 pc
Price: $ 652.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 337667
Weight: 10.23ct (total)
Size: 6.1 x 4.9 mm
Clarity: Transparent
Content: 10 pcs
Price: $ 94.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 546354
Weight: 38.27ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 30.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 735060
Weight: 0.09ct
Size: 3.3 x 2.5 mm
Clarity: VS
Content: 1 pc
Price: $ 75.60
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
747
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

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

Posted By Bleep in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I found what I was looking for...had to look up millimeters to inches. It would be nice to see something, like a quarter, in the pix to show relative size. I plan on buy loose gemstones for every month in the calendar

Posted By TheP in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

First time so this is an experiment! Shopping is so fun on this site, though!

Posted By Gem Delight in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good Hoping you will increase your inventory especially in the 6mm Thanks

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.

Posted By Razormane in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

Posted By Tim G. in February, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I did not have any problems

Posted By Clilrichard in January, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

The website was nice and I bought some gems

Posted By Jay in December, 2024
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

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

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

Posted By Bleep in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I found what I was looking for...had to look up millimeters to inches. It would be nice to see something, like a quarter, in the pix to show relative size. I plan on buy loose gemstones for every month in the calendar

Posted By TheP in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

First time so this is an experiment! Shopping is so fun on this site, though!

Posted By Gem Delight in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good Hoping you will increase your inventory especially in the 6mm Thanks

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.

Posted By Razormane in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

Posted By Tim G. in February, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I did not have any problems

Posted By Clilrichard in January, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

The website was nice and I bought some gems

Posted By Jay in December, 2024
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

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