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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

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Multicolor Untreated Gemstones
Orange Untreated Gemstones
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Yellow Untreated Gemstones
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1.20ct Orange Zircon, Round, VS

1.20ct Orange Zircon, Round, VS

6 mm (calibrated)

$ 28.64

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7.57ct Green Amazonite, Marquise, Opaque

7.57ct Green Amazonite, Marquise, Opaque

19.9 x 10.2 mm

$ 18.49

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1.02ct Orange Sunstone, Oval, Translucent

1.02ct Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 7.11

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15.10ct Multicolor Coral, Oval, Translucent

15.10ct Multicolor Coral, Oval, Translucent

23.6 x 18.1 mm

$ 46.81

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6.22ct Pink Rose Quartz, Emerald Cut, Transparent

6.22ct Pink Rose Quartz, Emerald Cut, Transparent

11 x 11 mm (calibrated)

$ 34.07

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1.42ct Purple Spinel, Cushion, VVS-VS

1.42ct Purple Spinel, Cushion, VVS-VS

7 x 5.6 mm

$ 116.68

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7.48ct Brown Smoky Quartz, Emerald Cut, VVS

7.48ct Brown Smoky Quartz, Emerald Cut, VVS

13 x 13 mm (calibrated)

$ 31.39

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6.11ctw Green Amazonite, Round, Opaque

6.11ctw Green Amazonite, Round, Opaque

7 mm (calibrated)

$ 14.93

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34.17ct Multicolor Obsidian, Oval, Opaque

34.17ct Multicolor Obsidian, Oval, Opaque

37.6 x 25.3 mm

$ 28.83

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0.89ctw Red Pyrope Garnet, Square, VS

0.89ctw Red Pyrope Garnet, Square, VS

4 x 4 mm (calibrated)

$ 6.82

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1.42ct Yellow Beryl, Oval, VVS

1.42ct Yellow Beryl, Oval, VVS

9 x 7 mm (calibrated)

$ 28.29

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7.15ct Multicolor Agate, Round, Opaque

7.15ct Multicolor Agate, Round, Opaque

11 mm (calibrated)

$ 7.12

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22.41ct Bi-Color Ametrine, Oval, VS

22.41ct Bi-Color Ametrine, Oval, VS

21.7 x 17.9 mm

$ 171.87

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1.35ct Purple Spinel, Cushion, VVS

1.35ct Purple Spinel, Cushion, VVS

6.9 x 5.7 mm

$ 75.51

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0.59ct Red Pyrope Garnet, Heart, VVS-VS

0.59ct Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 14.69

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1.02ctw Green Demantoid Garnet, Oval, VS

1.02ctw Green Demantoid Garnet, Oval, VS

4.2 x 3.2 mm

$ 111.75

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57.41ctw Multicolor Labradorite, Round, Translucent

57.41ctw Multicolor Labradorite, Round, Translucent

25 mm

$ 74.85

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12.56ctw Multicolor Jasper, Heart, Opaque

12.56ctw Multicolor Jasper, Heart, Opaque

21.8 x 11.2 mm

$ 13.76

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0.10ctw White Diamond, Marquise, VVS

0.10ctw White Diamond, Marquise, VVS

4.1 x 1.9 mm

$ 347.56

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0.57ct Yellow Citrine, Cushion, Transparent

0.57ct Yellow Citrine, Cushion, Transparent

5 x 5 mm (calibrated)

$ 4.26

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1.34ct Yellow Sphene, Oval, Transparent

1.34ct Yellow Sphene, Oval, Transparent

8 x 6 mm (calibrated)

$ 6.67

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3.60ctw Pink Strawberry Quartz, Oval, Translucent

3.60ctw Pink Strawberry Quartz, Oval, Translucent

9 x 7 mm (calibrated)

$ 21.61

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0.34ct Pink Morganite, Round, VS

0.34ct Pink Morganite, Round, VS

5 mm (calibrated)

$ 15.24

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1.76ctw Red Pyrope Garnet, Heart, VVS-VS

1.76ctw Red Pyrope Garnet, Heart, VVS-VS

6 x 6 mm (calibrated)

$ 13.50

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

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

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!

Posted By Matthew K. in May, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate
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