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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
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Untreated Gemstones Treatment

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Orange Untreated Gemstones
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1.84ct Violet Amethyst, Emerald Cut, VS

1.84ct Violet Amethyst, Emerald Cut, VS

9 x 7 mm (calibrated)

$ 14.11

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1.13ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

1.13ct Yellow Color-Change Diaspore, Emerald Cut, VVS-VS

6.2 x 4.6 mm

$ 50.80

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46.25ctw Gray Hematite, Heart, Opaque

46.25ctw Gray Hematite, Heart, Opaque

20.4 x 19.1 mm

$ 92.13

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2.07ct Red Almandine Garnet, Oval, VVS-VS

2.07ct Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 77.31

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1.45ct Yellow Beryl, Trillion, VVS

1.45ct Yellow Beryl, Trillion, VVS

8 x 8 mm (calibrated)

$ 28.88

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6.89ct White Quartz, Round, VVS

6.89ct White Quartz, Round, VVS

13 mm (calibrated)

$ 9.75

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3.33ct Pink Strawberry Quartz, Oval, Transparent

3.33ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 24.97

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26.70ct Yellow Jadeite, Fancy, Translucent

26.70ct Yellow Jadeite, Fancy, Translucent

39.8 x 14 mm

$ 21.93

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1.20ct Red Rhodolite Garnet, Oval, VS

1.20ct Red Rhodolite Garnet, Oval, VS

7 x 5 mm (calibrated)

$ 31.87

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11.48ct Green Jadeite, Oval, Translucent

11.48ct Green Jadeite, Oval, Translucent

21.3 x 15.9 mm

$ 37.73

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5.02ctw Yellow Citrine, Pear Shape, VS

5.02ctw Yellow Citrine, Pear Shape, VS

8 x 5 mm (calibrated)

$ 25.00

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3.33ctw Multicolor Andalusite, Round, VS

3.33ctw Multicolor Andalusite, Round, VS

3.5 mm (calibrated)

$ 122.00

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1.30ct Orange Hessonite Garnet, Cushion, VS-SI

1.30ct Orange Hessonite Garnet, Cushion, VS-SI

6 x 6 mm (calibrated)

$ 20.34

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47.68ct Multicolor Rhodochrosite, Sphere / Ball, Opaque
Rhodochrosite Product Video (447504)

47.68ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

16.7 mm

$ 104.48

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19.33ct Violet Amethyst, Round, VVS-VS

19.33ct Violet Amethyst, Round, VVS-VS

18 mm (calibrated)

$ 134.77

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2.35ct Orange Hessonite Garnet, Oval, VS

2.35ct Orange Hessonite Garnet, Oval, VS

9.2 x 7.4 mm

$ 41.83

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16.12ct Violet Jadeite, Oval, Opaque

16.12ct Violet Jadeite, Oval, Opaque

18 x 13 mm (calibrated)

$ 52.99

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14.09ct Turquoise Grandidierite, Oval, Translucent
Grandidierite Product Video (471786)

14.09ct Turquoise Grandidierite, Oval, Translucent

15.9 x 13.2 mm

$ 3,087.40

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23.33ct Multicolor Jasper, Oval, Opaque

23.33ct Multicolor Jasper, Oval, Opaque

33.9 x 23.4 mm

$ 15.84

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1.11ct Yellow Beryl, Oval, VVS-VS

1.11ct Yellow Beryl, Oval, VVS-VS

8 x 6 mm (calibrated)

$ 22.11

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0.84ct Pink Malaya Garnet, Round, VS

0.84ct Pink Malaya Garnet, Round, VS

5.5 mm (calibrated)

$ 36.81

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1.00ct White Rainbow Moonstone, Baguette, Transparent

1.00ct White Rainbow Moonstone, Baguette, Transparent

7.1 x 5.2 mm

$ 34.86

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4.28ctw Red Almandine Garnet, Oval, VS

4.28ctw Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 159.86

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1.85ct Yellow Citrine, Baguette, VVS-VS

1.85ct Yellow Citrine, Baguette, VVS-VS

10.2 x 5.1 mm

$ 14.19

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!

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I love the products. I've bought them as gifts and people love my gifts

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I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

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

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No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
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Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
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Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
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