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Home › Gemstones › Untreated Gemstones

Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
Untreated Gemstones Size
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

Size Explained

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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
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Red Untreated Gemstones
Turquoise Untreated Gemstones
Violet Untreated Gemstones
White Untreated Gemstones
Yellow Untreated Gemstones
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8.83ct Brown Smoky Quartz, Emerald Cut, VVS-VS

8.83ct Brown Smoky Quartz, Emerald Cut, VVS-VS

12 x 12 mm (calibrated)

$ 17.32

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1.06ct Purple Spinel, Cushion, VS

1.06ct Purple Spinel, Cushion, VS

6.6 x 4.9 mm

$ 105.58

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2.87ct Yellow Rutile Topaz, Pear Shape, Opaque

2.87ct Yellow Rutile Topaz, Pear Shape, Opaque

12 x 8 mm (calibrated)

$ 59.55

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5.78ct Blue Hemimorphite Druzy, Fancy, Opaque
Hemimorphite Druzy Product Video (439626)

5.78ct Blue Hemimorphite Druzy, Fancy, Opaque

15.5 x 9.2 mm

$ 94.99

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3.19ct Red Almandine Garnet, Pear Shape, VS

3.19ct Red Almandine Garnet, Pear Shape, VS

12 x 8 mm (calibrated)

$ 26.48

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1.50ctw Yellow Beryl, Oval, VS

1.50ctw Yellow Beryl, Oval, VS

8 x 6 mm (calibrated)

$ 29.88

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4.45ctw Yellow Citrine, Oval, VVS-VS
Citrine Product Video (433785)

4.45ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 20.32

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3.03ctw White Topaz, Cushion, VVS-VS

3.03ctw White Topaz, Cushion, VVS-VS

4.6 x 4.6 mm

$ 16.60

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2.82ctw Green Peridot, Round, VVS-VS

2.82ctw Green Peridot, Round, VVS-VS

5 mm (calibrated)

$ 42.13

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19.54ct Gray Jadeite, Oval, Opaque
Jadeite Product Video (384515)

19.54ct Gray Jadeite, Oval, Opaque

25.8 x 14.8 mm

$ 64.23

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25.07ctw Green Aventurine, Fancy, Translucent

25.07ctw Green Aventurine, Fancy, Translucent

26.3 x 11.5 mm

$ 49.94

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0.64ct Pink Morganite, Pear Shape, VVS-VS

0.64ct Pink Morganite, Pear Shape, VVS-VS

8.9 x 4.7 mm

$ 38.56

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1.19ct Purple Sapphire, Cushion, VS
Sapphire Product Video (448496)

1.19ct Purple Sapphire, Cushion, VS

6.4 x 5.6 mm

$ 628.42

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2.11ct Green Prehnite, Oval, Transparent

2.11ct Green Prehnite, Oval, Transparent

7.7 x 7.2 mm

$ 9.48

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2.73ctw Orange Hessonite Garnet, Emerald Cut, VS

2.73ctw Orange Hessonite Garnet, Emerald Cut, VS

7.4 x 5.4 mm

$ 41.38

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2.71ct Multicolor Labradorite, Marquise, Translucent

2.71ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 5.99

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9.55ct Black Tourmaline, Emerald Cut, Opaque

9.55ct Black Tourmaline, Emerald Cut, Opaque

14.6 x 11.4 mm

$ 47.56

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0.93ct Multicolor Opal, Oval, Transparent

0.93ct Multicolor Opal, Oval, Transparent

9 x 7 mm (calibrated)

$ 26.59

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2.50ctw Pink Tourmaline, Round, Transparent

2.50ctw Pink Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 41.43

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1.71ct Violet Amethyst, Pear Shape, VVS-VS

1.71ct Violet Amethyst, Pear Shape, VVS-VS

10 x 7 mm (calibrated)

$ 11.25

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3.54ctw Brown Smoky Quartz, Round, VS-SI

3.54ctw Brown Smoky Quartz, Round, VS-SI

8 mm (calibrated)

$ 15.52

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4.13ct White Topaz, Oval, VVS-VS

4.13ct White Topaz, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 31.67

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5.25ct Multicolor Labradorite, Marquise, Translucent

5.25ct Multicolor Labradorite, Marquise, Translucent

16 x 8 mm (calibrated)

$ 11.61

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1.24ct Pink Strawberry Quartz, Round, Translucent

1.24ct Pink Strawberry Quartz, Round, Translucent

7 mm (calibrated)

$ 12.44

View Gem
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Why Buy Untreated Gemstones from GemSelect?

Natural Untreated Gemstones

Our untreated gemstones are completely natural and have not undergone any enhancement processes. These gems display their original color and clarity as formed in nature, making them highly valued by collectors, jewelers, and gemstone enthusiasts.

Buy Untreated Gemstones Online

At GemSelect you can easily shop untreated gemstones online with confidence. Our inventory includes carefully sourced loose gemstones from around the world, with full transparency regarding treatments and gem origins.

Natural Untreated Loose Gemstones

Why Choose Untreated Gems?

Untreated gems are prized because they remain exactly as nature created them. Without heat or chemical treatments, these stones offer rarity and authenticity that many collectors and jewelry designers prefer.

Unheated Sapphire and Ruby

Some of the most sought-after untreated gemstones include unheated sapphire and ruby. These rare stones retain their natural color and are highly valued due to the absence of heat treatment commonly used to enhance corundum.

Gemstone Authenticity and Transparency

Every gemstone at GemSelect comes with clear treatment disclosure. When purchasing untreated stones, buyers can be confident they are receiving authentic gems that have not been altered by heat or other enhancement methods.

Untreated Gems for Custom Jewelry

Natural untreated gemstones are perfect for custom jewelry pieces. Their unique appearance ensures every ring, pendant, or pair of earrings features a one-of-a-kind gemstone created by nature.

Rare and Collectible Gemstones

Because many gemstones are routinely treated, truly untreated examples can be relatively rare. Collectors often seek untreated stones because they represent the most natural state of a gemstone.

Learn more about gemstone treatments and natural gem formation on our Gemstone Treatment Guide.

FAQs

What are untreated gemstones?

Untreated gemstones are natural gems that have not been enhanced with heat, chemicals, irradiation, or other treatments. They retain their original appearance as formed in nature.

Are untreated gemstones more valuable?

In many cases untreated gemstones are more valuable because they are rarer than treated stones. Natural color without enhancement is highly prized by collectors and investors.

How can I tell if a gemstone is untreated?

Gemstone treatment is typically determined through gemological testing. Reputable sellers like GemSelect clearly disclose whether a stone is untreated or has received any enhancements.

Which gemstones are commonly untreated?

Some gemstones frequently found untreated include garnet, spinel, peridot, and certain sapphires. However, many gem types may be treated depending on their origin and quality.

Are untreated gemstones suitable for jewelry?

Yes, untreated gemstones can be excellent for jewelry depending on their hardness and durability. Popular choices include sapphire, ruby, spinel, and garnet.

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

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Fast and reliable service.

Posted By Zæck in December, 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

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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