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
ID: 678668
Weight: 10.30ct
Size: 22.6 x 15.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 61.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 480403
Weight: 2.11ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: Translucent
Content: 4 pcs
Price: $ 19.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 714070
Weight: 0.55ct
Size: 4.3 mm
Clarity: SI
Content: 1 pc
Price: $ 16.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 706948
Weight: 1.82ct
Size: 10 x 5 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 4.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 459507
Weight: 3.96ct
Size: 11 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 31.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 555842
Weight: 0.81ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 6.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 687409
Weight: 10.50ct
Size: 20.2 x 12.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 31.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 348918
Weight: 35.32ct
Size: 27 x 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 46.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 567162
Weight: 5.60ct
Size: 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 16.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 711774
Weight: 11.18ct
Size: 18 x 13 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 29.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 692419
Weight: 28.03ct
Size: 21.5 x 20.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 20.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 745674
Weight: 23.13ct (total)
Size: 12 x 10 mm (calibrated)
Clarity: Transparent
Content: 5 pcs
Price: $ 161.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 606013
Weight: 3.08ct
Size: 12 x 8 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 40.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 715011
Weight: 10.06ct (total)
Size: 12 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 26.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 460843
Weight: 3.29ct
Size: 10 mm (calibrated)
Clarity: VVS
Price: $ 30.40
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 700383
Weight: 0.77ct
Size: 5.2 mm
Clarity: SI
Content: 1 pc
Price: $ 46.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 596865
Weight: 4.78ct
Size: 15.7 x 9.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 17.21
Item in Stock
More Options & Item Details
Add to Cart
ID: 449671
Weight: 8.35ct (total)
Size: 7.4 x 7 mm
Clarity: Transparent
Content: 4 pcs
Price: $ 55.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 563561
Weight: 1.11ct
Size: 7 x 5 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 24.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 715567
Weight: 11.40ct
Size: 18 x 13 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 109.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 567235
Weight: 2.31ct
Size: 7.3 x 7.2 mm
Clarity: VS
Content: 1 pc
Price: $ 51.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 527925
Weight: 7.57ct
Size: 12 x 10 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 54.76
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: 494740
Weight: 3.72ct
Size: 14.6 x 9.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 13.90
Item in Stock
More Options & Item Details
Add to Cart
ID: 607764
Weight: 1.42ct
Size: 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 26.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 656141
Weight: 21.42ct
Size: 29.4 x 19.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 109.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 476868
Weight: 40.52ct
Size: 25.6 x 17 mm
Clarity: Opaque
Content: 1 pc
Price: $ 160.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 497826
Weight: 3.39ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: Translucent
Content: 4 pcs
Price: $ 23.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 554609
Weight: 29.63ct
Size: 21 x 15.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 35.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 732480
Weight: 6.80ct (total)
Size: 11 x 9 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 61.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 725005
Weight: 5.37ct
Size: 11 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 6.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 708310
Weight: 6.82ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 11.29
Item in Stock
More Options & Item Details
Add to Cart
ID: 669509
Weight: 7.49ct
Size: 14.8 x 13.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 22.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 358725
Weight: 2.22ct
Size: 8.2 x 6.6 mm
Clarity: VVS
Content: 1 pc
Price: $ 73.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 431833
Weight: 2.90ct (total)
Size: 4.6 x 4.6 mm
Clarity: VS
Content: 5 pcs
Price: $ 30.59
Item in Stock
More Options & Item Details
Add to Cart
ID: 726838
Weight: 1.77ct
Size: 6.8 x 6.4 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 106.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 422010
Weight: 5.15ct
Size: 11 x 9 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 34.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 675390
Weight: 1.62ct
Size: 10 x 7 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 4.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 738979
Weight: 0.47ct
Size: 5 x 5 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 4.23
Item in Stock
More Options & Item Details
Add to Cart
ID: 541539
Weight: 3.24ct (total)
Size: 7.7 x 6.5 mm
Clarity: VS
Content: 2 pcs
Price: $ 65.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 572193
Weight: 3.01ct
Size: 10 x 10 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 27.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 731002
Weight: 11.71ct
Size: 17.2 x 12.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 14.33
Item in Stock
More Options & Item Details
Add to Cart
ID: 688091
Weight: 9.46ct
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 11.35
Item in Stock
More Options & Item Details
Add to Cart
ID: 364694
Weight: 7.22ct
Size: 16 x 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 47.65
Item in Stock
More Options & Item Details
Add to Cart
ID: 439428
Weight: 6.13ct
Size: 14.4 x 11 mm
Clarity: Opaque
Content: 1 pc
Price: $ 121.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 456774
Weight: 2.65ct
Size: 10.8 x 6.9 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 24.49
Item in Stock
More Options & Item Details
Add to Cart
ID: 684600
Weight: 11.44ct
Size: 17.8 x 15 mm
Clarity: Transparent
Content: 1 pc
Price: $ 12.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 465842
Weight: 3.08ct (total)
Size: 12 x 6 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 32.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 686520
Weight: 0.25ct
Size: 5.5 x 2.8 mm
Clarity: VVS
Content: 1 pc
Price: $ 16.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 728234
Weight: 0.05ct
Size: 2.2 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 20.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 619791
Weight: 2.18ct
Size: 10 x 8 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 71.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 732440
Weight: 1.64ct
Size: 8 x 6 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 39.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 722696
Weight: 5.47ct
Size: 19.8 x 9.6 mm
Clarity: Translucent
Content: 1 pc
Price: $ 45.95
Item in Stock
More Options & Item Details
Add to Cart
ID: 392208
Weight: 6.18ct (total)
Size: 10 x 8 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 24.47
Item in Stock
More Options & Item Details
Add to Cart
ID: 715838
Weight: 4.51ct
Size: 12 x 9.5 mm
Clarity: VVS
Content: 1 pc
Price: $ 43.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 387771
Weight: 2.99ct (total)
Size: 4.6 x 4.6 mm
Clarity: VVS-VS
Content: 6 pcs
Price: $ 19.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 671195
Weight: 10.29ct
Size: 20.9 x 13.4 mm
Clarity: Translucent
Content: 1 pc
Price: $ 27.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 370446
Weight: 14.70ct
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 29.11
Item in Stock
More Options & Item Details
Add to Cart
ID: 356983
Weight: 4.07ct (total)
Size: 6 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 10 pcs
Price: $ 26.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 408279
Weight: 7.63ct
Size: 12 x 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 18.04
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
73
Choose Page
1 - 774

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

I have found GemSelect to have the best selections of quality stones at a reasonable price. I like the packaging and the report availability.

Posted By Sam in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I really liked the email, and the link that help return me to the site. I didnt have access to my card info while checking out and I had to put my phone away so I lost the tab. Fortunately, since I did give an email- they sent me a link that brought me back to where I was. Greatly appreciated

Posted By Jag in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love Gem Select! When you order what you see is what you get. As soon as you make payment that particular gem is taken off the photo album. That way the one you select is a one of that kind.

Posted By Desertchick in March, 2025
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

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 2025
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

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate
Enlarged Gemstone Image