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: 410355
Weight: 5.76ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 38.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 620783
Weight: 1.15ct (total)
Size: 6 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 10.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 707001
Weight: 0.89ct
Size: 6.5 x 5.4 mm
Clarity: VVS
Content: 1 pc
Price: $ 5.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 663115
Weight: 4.71ct
Size: 12 x 10 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 11.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 636915
Weight: 0.74ct
Size: 7.7 x 5.8 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 39.07
Item in Stock
More Options & Item Details
Add to Cart
ID: 521472
Weight: 112.68ct
Size: 33 x 30.3 mm
Clarity: Transparent
Content: 1 pc
Price: $ 297.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 704381
Weight: 1.33ct
Size: 13.9 x 3.6 mm
Clarity: VS
Content: 1 pc
Price: $ 43.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 491581
Weight: 55.11ct (total)
Size: 20 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 64.75
Item in Stock
More Options & Item Details
Add to Cart
ID: 395154
Weight: 3.60ct (total)
Size: 7.7 x 7.6 mm
Clarity: Transparent
Content: 2 pcs
Price: $ 23.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 714096
Weight: 0.53ct
Size: 7 x 5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 28.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 616836
Weight: 0.82ct
Size: 6 x 6 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 59.53
Item in Stock
More Options & Item Details
Add to Cart
ID: 697113
Weight: 5.68ct
Size: 15.2 x 9 mm
Clarity: VVS
Content: 1 pc
Price: $ 34.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 650195
Weight: 2.29ct (total)
Size: 7 mm (calibrated)
Clarity: VVS
Content: 2 pcs
Price: $ 19.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 515595
Weight: 1.74ct
Size: 9 x 9 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 16.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 433493
Weight: 4.46ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 29.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 718845
Weight: 0.78ct
Size: 6 x 4 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 14.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 532345
Weight: 2.02ct
Size: 9 x 7 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 16.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 736669
Weight: 7.71ct
Size: 19.6 x 13.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 10.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 623797
Weight: 0.96ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 69.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 718178
Weight: 1.19ct
Size: 6.1 x 5.1 mm
Clarity: VS
Content: 1 pc
Price: $ 35.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 573242
Weight: 1.14ct
Size: 7 x 5 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 30.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 737348
Weight: 4.67ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 210.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 435817
Weight: 14.48ct
Size: 16 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 47.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 367185
Weight: 8.24ct
Size: 15.7 x 9.7 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 56.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 720525
Weight: 1.37ct
Size: 7.1 x 6 mm
Clarity: VS
Content: 1 pc
Price: $ 131.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 684515
Weight: 39.70ct
Size: 29.4 x 28.2 mm
Clarity: Transparent
Content: 1 pc
Price: $ 50.98
Item in Stock
More Options & Item Details
Add to Cart
ID: 721622
Weight: 22.93ct
Size: 36.1 x 16.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 82.55
Item in Stock
More Options & Item Details
Add to Cart
ID: 494899
Weight: 5.01ct
Size: 12 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 36.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 533980
Weight: 3.45ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 31.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 551661
Weight: 3.09ct
Size: 10 x 10 mm (calibrated)
Clarity: VVS-VS
Price: $ 27.90
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 737115
Weight: 22.79ct
Size: 28.5 x 20.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 32.13
Item in Stock
More Options & Item Details
Add to Cart
ID: 479198
Weight: 2.60ct (total)
Size: 10 x 5.1 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 27.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 706419
Weight: 5.05ct
Size: 11 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 10.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 714993
Weight: 1.38ct (total)
Size: 5.2 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 3.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 636880
Weight: 1.49ct
Size: 8 x 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 32.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 600426
Weight: 6.56ct
Size: 14.1 x 10.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 29.35
Item in Stock
More Options & Item Details
Add to Cart
ID: 690300
Weight: 26.40ct
Size: 22.6 x 17.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 102.01
Item in Stock
More Options & Item Details
Add to Cart
ID: 685853
Weight: 0.92ct
Size: 6.4 x 5.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 16.93
Item in Stock
More Options & Item Details
Add to Cart
ID: 721917
Weight: 27.49ct
Size: 38.1 x 13.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 32.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 449641
Weight: 6.48ct (total)
Size: 7.7 x 6.3 mm
Clarity: Transparent
Content: 4 pcs
Price: $ 42.77
Item in Stock
More Options & Item Details
Add to Cart
ID: 732552
Weight: 7.08ct
Size: 14.3 x 11.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 254.88
Item in Stock
More Options & Item Details
Add to Cart
ID: 488370
Weight: 34.86ct
Size: 33.9 x 22.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 25.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 636152
Weight: 8.58ct
Size: 15 x 10.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 72.07
Item in Stock
More Options & Item Details
Add to Cart
ID: 619989
Weight: 8.10ct (total)
Size: 12 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 21.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 586312
Weight: 23.52ct (total)
Size: 24.2 x 12.5 mm
Clarity: Translucent
Content: 2 pcs
Price: $ 65.51
Item in Stock
More Options & Item Details
Add to Cart
ID: 566529
Weight: 0.62ct
Size: 6.1 x 4.2 mm
Clarity: SI-I1
Content: 1 pc
Price: $ 14.14
Item in Stock
More Options & Item Details
Add to Cart
ID: 527707
Weight: 0.94ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 8.69
Item in Stock
More Options & Item Details
Add to Cart
ID: 625267
Weight: 1.00ct
Size: 6.5 x 4.2 mm
Clarity: Transparent
Content: 1 pc
Price: $ 3.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 707846
Weight: 6.03ct
Size: 15 x 10.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 43.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 445539
Weight: 2.80ct
Size: 12.7 x 8 mm
Clarity: VVS
Content: 1 pc
Price: $ 18.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 453865
Weight: 3.76ct
Size: 13.9 x 7.9 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 34.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 691132
Weight: 0.47ct
Size: 5.3 x 4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 17.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 552999
Weight: 7.50ct (total)
Size: 9 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 39.60
Item in Stock
More Options & Item Details
Add to Cart
ID: 711971
Weight: 1.61ct
Size: 9 x 6 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 4.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 730824
Weight: 4.19ct
Size: 10.6 x 9.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 7.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 673064
Weight: 15.85ct
Size: 24.7 x 14.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 19.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 719923
Weight: 0.74ct
Size: 7 x 5 mm (calibrated)
Clarity: VS
Price: $ 6.22
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 417858
Weight: 7.50ct
Size: 13 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 15.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 403666
Weight: 18.19ct
Size: 20.3 x 17.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 127.02
Item in Stock
More Options & Item Details
Add to Cart
ID: 341425
Weight: 7.55ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VVS-VS
Content: 10 pcs
Price: $ 72.29
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
605
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 selection, trusted quality. What I have purchased has always been as discribed.

Posted By Sterling in November, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have bought many stones from GemsSelect and have been very satisfied with all!I will continue to buy and recommend this site!

Posted By DG in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to conduct search, good amount of stock to select from along with variety of prices.

Posted By Que in June, 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

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

Posted By Ibie in February, 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

It was my second time so I understand what it is to do

Posted By Ibie in February, 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 -> 8 star ratings

The website was nice and I bought some gems

Posted By Jay in December, 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 selection, trusted quality. What I have purchased has always been as discribed.

Posted By Sterling in November, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have bought many stones from GemsSelect and have been very satisfied with all!I will continue to buy and recommend this site!

Posted By DG in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to conduct search, good amount of stock to select from along with variety of prices.

Posted By Que in June, 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

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

Posted By Ibie in February, 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

It was my second time so I understand what it is to do

Posted By Ibie in February, 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 -> 8 star ratings

The website was nice and I bought some gems

Posted By Jay in December, 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