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: 430299
Weight: 5.34ct
Size: 13 x 8.6 mm
Clarity: Translucent
Content: 1 pc
Price: $ 13.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 688863
Weight: 4.38ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 24.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 590265
Weight: 2.07ct
Size: 8.4 x 6.7 mm
Clarity: Translucent
Content: 1 pc
Price: $ 13.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 364099
Weight: 16.08ct
Size: 22.2 x 16.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 42.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 367008
Weight: 8.18ct
Size: 16 x 9.1 mm
Clarity: VVS
Content: 1 pc
Price: $ 46.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 673490
Weight: 1.72ct
Size: 7.9 x 6.6 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 41.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 544839
Weight: 1.54ct
Size: 8.4 x 8.2 mm
Clarity: VVS-VS
Price: $ 11.48
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 534758
Weight: 1.84ct
Size: 7 x 7 mm (calibrated)
Clarity: VVS-VS
Price: $ 14.57
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 659991
Weight: 1.46ct
Size: 7.6 x 6.2 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 35.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 736567
Weight: 7.82ct
Size: 17.2 x 11.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 11.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 682130
Weight: 0.98ct
Size: 7 x 5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 17.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 565150
Weight: 0.18ct (total)
Size: 2.9 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 394.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 680690
Weight: 4.25ct
Size: 11.6 x 8.5 mm
Clarity: SI
Content: 1 pc
Price: $ 127.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 673508
Weight: 21.15ct
Size: 27.7 x 18.8 mm
Clarity: Translucent
Content: 1 pc
Price: $ 25.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 438499
Weight: 14.99ct (total)
Size: 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 59.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 723238
Weight: 0.05ct (total)
Size: 1.9 mm (calibrated)
Clarity: VS-SI
Content: 2 pcs
Price: $ 48.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 644083
Weight: 4.06ct (total)
Size: 8 x 8 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 10.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 526055
Weight: 1.18ct
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Price: $ 31.15
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 708220
Weight: 2.96ct
Size: 9 x 7 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 4.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 711528
Weight: 4.47ct
Size: 12 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 64.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 437865
Weight: 2.30ct
Size: 8.2 x 7.4 mm
Clarity: VS
Content: 1 pc
Price: $ 106.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 730103
Weight: 2.88ct
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 25.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 738972
Weight: 0.93ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 8.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 694839
Weight: 26.95ct
Size: 20 x 16 mm
Clarity: VVS
Content: 1 pc
Price: $ 186.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 648268
Weight: 1.30ct
Size: 7 x 5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 34.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 431096
Weight: 2.79ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 4 pcs
Price: $ 29.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 688149
Weight: 16.89ct (total)
Size: 13 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 49.45
Item in Stock
More Options & Item Details
Add to Cart
ID: 500939
Weight: 3.88ct (total)
Size: 5.3 mm
Clarity: VS
Content: 6 pcs
Price: $ 184.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 478935
Weight: 1.20ct
Size: 9.9 x 5.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 12.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 342040
Weight: 4.29ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VS
Content: 10 pcs
Price: $ 39.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 439093
Weight: 3.16ct
Size: 9 x 9 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 196.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 656109
Weight: 1.44ct
Size: 8 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 34.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 733126
Weight: 3.43ct
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 31.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 503521
Weight: 3.56ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 8 pcs
Price: $ 32.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 656296
Weight: 6.63ct
Size: 14.9 x 12.2 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 55.69
Item in Stock
More Options & Item Details
Add to Cart
ID: 479751
Weight: 2.74ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VS
Content: 10 pcs
Price: $ 25.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 646615
Weight: 0.68ct
Size: 6.5 x 4.8 mm
Clarity: VS
Content: 1 pc
Price: $ 5.71
Item in Stock
More Options & Item Details
Add to Cart
ID: 382767
Weight: 9.58ct
Size: 16.4 x 12.5 mm
Clarity: Translucent
Content: 1 pc
Price: $ 25.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 564694
Weight: 24.74ct (total)
Size: 20.8 x 13.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 56.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 439074
Weight: 11.39ct
Size: 21.5 x 10.5 mm
Clarity: Transparent
Content: 1 pc
Price: $ 32.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 521576
Weight: 19.87ct
Size: 22.3 x 15.2 mm
Clarity: Transparent
Content: 1 pc
Price: $ 157.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 655894
Weight: 0.82ct
Size: 7 x 7 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 19.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 720524
Weight: 1.50ct
Size: 7.3 x 5.8 mm
Clarity: VS
Content: 1 pc
Price: $ 144.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 511816
Weight: 2.87ct (total)
Size: 7.1 x 5.4 mm
Clarity: Translucent
Content: 4 pcs
Price: $ 103.16
Item in Stock
More Options & Item Details
Add to Cart
ID: 636636
Weight: 1.50ct
Size: 8 x 8 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 43.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 697736
Weight: 0.65ct
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 3.25
Item in Stock
More Options & Item Details
Add to Cart
ID: 496790
Weight: 2.46ct
Size: 9.1 x 7.6 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 64.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 571142
Weight: 3.71ct
Size: 11 x 9 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 27.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 594673
Weight: 1.68ct
Size: 7.8 x 6.3 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 39.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 687926
Weight: 3.44ct
Size: 10 x 8 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 4.13
Item in Stock
More Options & Item Details
Add to Cart
ID: 465591
Weight: 4.54ct
Size: 14 x 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 39.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 723473
Weight: 11.81ct
Size: 14 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 14.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 479240
Weight: 1.36ct
Size: 9.9 x 5.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 14.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 645633
Weight: 1.56ct
Size: 9.1 x 3.5 mm
Clarity: VS
Content: 1 pc
Price: $ 22.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 697609
Weight: 0.63ct
Size: 7 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 3.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 723833
Weight: 1.62ct
Size: 8 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 15.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 606514
Weight: 2.18ct
Size: 8.2 x 6.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 5.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 447651
Weight: 1.20ct
Size: 7.5 x 4.5 mm
Clarity: VS
Content: 1 pc
Price: $ 75.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 708774
Weight: 33.03ct
Size: 25 x 18.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 118.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 436520
Weight: 2.76ct
Size: 10 x 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 8.96
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
220
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 love the gems!

Posted By MM in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very surprised how quick and efficient it was to checkout and pay. Also found exactly what I was looking for no issues.

Posted By Watson 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

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones..

Posted By Steven M. in February, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Okay thank you.

Posted By Bepc61 in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been buying gems for several years off and on and love their selection and great low prices. I started out wanting to get an example of each type of gem but after looking at all the types of gems and reading about them I realize it is almost impossible for me to do. It took me years just to read about them all. Gem Select is the best gem site you can find. For information or to buy. Steve M.

Posted By Stevee M. in January, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Easy website to navigate, lots of different varieties and options to choose from.

Posted By Brian in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Always excellent quality and service from GemSelect

Posted By Mike B. in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Good products

Posted By Brave 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 -> 9 star ratings

I love the gems!

Posted By MM in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very surprised how quick and efficient it was to checkout and pay. Also found exactly what I was looking for no issues.

Posted By Watson 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

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones..

Posted By Steven M. in February, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Okay thank you.

Posted By Bepc61 in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been buying gems for several years off and on and love their selection and great low prices. I started out wanting to get an example of each type of gem but after looking at all the types of gems and reading about them I realize it is almost impossible for me to do. It took me years just to read about them all. Gem Select is the best gem site you can find. For information or to buy. Steve M.

Posted By Stevee M. in January, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Easy website to navigate, lots of different varieties and options to choose from.

Posted By Brian in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Always excellent quality and service from GemSelect

Posted By Mike B. in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Good products

Posted By Brave 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