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Loose Untreated Gemstones: Certified Natural Gems for Collectors and Jewelry, Wholesale Untreated Stones

Loose Untreated Gemstones: Certified Natural Gems for Collectors and Jewelry, Wholesale Untreated Stones

Discover loose untreated gemstones in our curated selection. Find unheated sapphires, untreated rubies, and virgin untreated stones, our collection highlights the beauty of nature’s finest treasures. Perfect for engagement rings, heirloom pieces, or collectors, our certified untreated gems and GIA-certified natural gems ensure authenticity and quality. Experience the allure of authentic untreated crystals and precious untreated gemstones today.

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ID: 612073
Weight: 12.95ct
Size: 16 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 51.29
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ID: 564801
Weight: 0.86ct
Size: 5.5 x 4.6 mm
Clarity: SI
Content: 1 pc
Price: $ 355.79
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ID: 323449
Weight: 24.80ct (total)
Size: 16 x 16 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 32.74
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ID: 488996
Weight: 33.54ct
Size: 20.5 x 18.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 68.05
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ID: 346704
Weight: 205.80ct
Size: 55.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 185.22
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ID: 560924
Weight: 0.75ct
Size: 5 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 34.65
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ID: 673941
Weight: 9.38ct
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 112.46
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ID: 514179
Weight: 24.86ct (total)
Size: 18.7 x 12.5 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 64.97
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ID: 680004
Weight: 21.58ct
Size: 16 x 16 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 207.17
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ID: 491663
Weight: 56.12ct (total)
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 65.94
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ID: 514974
Weight: 8.34ct
Size: 16 x 12 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 77.06
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ID: 460459
Weight: 4.62ct (total)
Size: 7.4 x 7.2 mm
Clarity: VS-SI
Content: 2 pcs
Price: $ 9,702.00
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ID: 508372
Weight: avg. 7.55 ct / each
Size: 16 x 12 mm (calibrated)
Clarity: VVS-VS
Price: $ 58.15
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ID: 573982
Weight: 1.73ct
Size: 8 x 6 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 38.06
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ID: 460455
Weight: 5.00ct
Size: 9 x 9 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 11,088.00
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ID: 601420
Weight: 7.22ct
Size: 17.1 x 12 mm
Clarity: VS
Content: 1 pc
Price: $ 35.08
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ID: 564607
Weight: 0.17ct
Size: 3.5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 339.92
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ID: 403262
Weight: 43.72ct
Size: 22 x 19 mm
Clarity: Translucent
Content: 1 pc
Price: $ 807.95
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ID: 694477
Weight: 20.59ct
Size: 18 x 18 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 144.13
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ID: 650033
Weight: 1.36ct
Size: 7 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 11.42
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ID: 588905
Weight: 18.47ct
Size: 20.9 x 15 mm
Clarity: VS
Content: 1 pc
Price: $ 121.90
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ID: 365836
Weight: 39.03ct
Size: 33.5 x 33.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 77.27
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ID: 573422
Weight: 1.90ct
Size: 13 x 9 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 75.24
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ID: 391410
Weight: 130.91ct
Size: 47 x 43.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 518.40
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ID: 692500
Weight: 39.09ct
Size: 34.6 x 24.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 21.58
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ID: 644905
Weight: 2.38ct
Size: 10 x 8 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 28.67
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ID: 521446
Weight: 42.66ct
Size: 25.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 337.87
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ID: 619767
Weight: 10.67ct
Size: 15 x 15 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 53.95
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ID: 679959
Weight: 28.28ct
Size: 23.1 x 17.5 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 271.49
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ID: 678175
Weight: 5.19ct
Size: 13.4 x 10.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 10.38
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ID: 668517
Weight: 31.32ct
Size: 25 x 15 mm
Clarity: Opaque
Content: 1 pc
Price: $ 156.60
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ID: 530659
Weight: 1.53ct
Size: 6.7 x 5.3 mm
Clarity: VS
Content: 1 pc
Price: $ 141.37
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ID: 693994
Weight: 1.36ct
Size: 6.4 x 5.2 mm
Clarity: VVS
Content: 1 pc
Price: $ 68.00
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ID: 521754
Weight: 30.94ct
Size: 25.4 x 20.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 204.20
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ID: 485915
Weight: 6.48ct
Size: 14.8 x 11.7 mm
Clarity: Translucent
Content: 1 pc
Price: $ 54.43
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ID: 715680
Weight: 0.90ct
Size: 8.7 x 4.1 mm
Clarity: VS
Content: 1 pc
Price: $ 47.70
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ID: 497338
Weight: 5.68ct
Size: 12 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 31.24
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ID: 636448
Weight: 13.24ct
Size: 21.6 x 16.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 63.55
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ID: 662869
Weight: 5.38ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: VS-SI
Content: 2 pcs
Price: $ 107.60
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ID: 492113
Weight: 6.39ct
Size: 17.8 x 9.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 18.47
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ID: 513650
Weight: 127.45ct
Size: 28.6 x 26.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 2,102.93
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ID: 349030
Weight: 43.68ct
Size: 34.3 x 24.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 48.05
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ID: 660001
Weight: 1.60ct
Size: 7.7 x 6.4 mm
Clarity: VS
Content: 1 pc
Price: $ 38.40
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ID: 526454
Weight: avg. 12.53 ct / each
Size: 12 mm (calibrated)
Clarity: Opaque
Price: $ 15.16
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ID: 545834
Weight: 34.60ct
Size: 32.1 x 17.7 mm
Clarity: Translucent
Content: 1 pc
Price: $ 36.54
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ID: 433017
Weight: 76.12ct
Size: 41.4 x 34.5 mm
Clarity: Translucent
Content: 1 pc
Price: $ 73.08
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ID: 696780
Weight: 5.84ct
Size: 17 x 17 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 560.64
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ID: 645799
Weight: 19.31ct
Size: 17.9 x 13.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 60.25
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ID: 443107
Weight: 3.60ct
Size: 11.9 x 8.3 mm
Clarity: VS
Content: 1 pc
Price: $ 593.56
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ID: 441222
Weight: 9.49ct
Size: 17.3 x 8.8 mm
Clarity: VS
Content: 1 pc
Price: $ 313.18
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ID: 690459
Weight: 8.97ct
Size: 20.7 x 15.7 mm
Clarity: Transparent
Content: 1 pc
Price: $ 294.36
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ID: 671191
Weight: 55.63ct
Size: 33.6 x 23 mm
Clarity: Translucent
Content: 1 pc
Price: $ 119.60
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ID: 523676
Weight: 19.94ct
Size: 36.4 x 16.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 131.60
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ID: 219857
Weight: 9.09ct
Size: 16 x 12 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 53.99
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ID: 564620
Weight: 0.30ct
Size: 4.5 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 549.88
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ID: 472172
Weight: 8.10ct
Size: 12.5 x 10 mm
Clarity: Opaque
Content: 1 pc
Price: $ 32.08
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ID: 678331
Weight: 2.17ct
Size: 7.6 x 7.2 mm
Clarity: VS
Content: 1 pc
Price: $ 78.12
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ID: 572426
Weight: 12.71ct (total)
Size: 14.9 x 11 mm
Clarity: VVS-VS
Content: 2 pcs
Price: $ 41.94
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ID: 375266
Weight: 2.92ct
Size: 8.4 x 6.7 mm
Clarity: VS
Content: 1 pc
Price: $ 102.20
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ID: 547772
Weight: 2.50ct
Size: 7 x 7 mm (calibrated)
Clarity: SI
Content: 1 pc
Price: $ 50.66
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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

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

Loved everything. High quality, quick shipping, and authentication included.

Posted By Chris 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

Overall Rating -> 9 star ratings

I love the gems!

Posted By MM in April, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I was looking for a small gift for a friend- the process is the same as every other time and was very simple, and she even got her gift early! On the downside, there's no way to easily keep track of multiple Shipping Addresses, so if I want to send a gift to Friend A and to Friend B, I have to overwrite everything and it's a fair bit clunky in that regard.

Posted By Jezzi in June, 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

It was easy to find what I wanted

Posted By Villian in December, 2024
Source: Bizrate

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

Im not a jeweler, I buy for my personal use. My dad was a jewelry maker and I love gemstones.

Posted By Andie 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

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

Loved everything. High quality, quick shipping, and authentication included.

Posted By Chris 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

Overall Rating -> 9 star ratings

I love the gems!

Posted By MM in April, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I was looking for a small gift for a friend- the process is the same as every other time and was very simple, and she even got her gift early! On the downside, there's no way to easily keep track of multiple Shipping Addresses, so if I want to send a gift to Friend A and to Friend B, I have to overwrite everything and it's a fair bit clunky in that regard.

Posted By Jezzi in June, 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

It was easy to find what I wanted

Posted By Villian in December, 2024
Source: Bizrate

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

Im not a jeweler, I buy for my personal use. My dad was a jewelry maker and I love gemstones.

Posted By Andie 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