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Untreated Gemstones

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

Untreated Gemstones Weight
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0.54ct White Rainbow Moonstone, Round, Transparent

0.54ct White Rainbow Moonstone, Round, Transparent

6 mm (calibrated)

$ 18.82

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24.38ct Brown Moonstone, Oval, Opaque

24.38ct Brown Moonstone, Oval, Opaque

21.8 x 16.1 mm

$ 32.06

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18.64ct Green Amazonite, Square, Opaque

18.64ct Green Amazonite, Square, Opaque

19 x 19 mm (calibrated)

$ 18.93

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76.29ct Multicolor Jasper, Baguette, Opaque

76.29ct Multicolor Jasper, Baguette, Opaque

35.2 x 23.6 mm

$ 60.79

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47.73ct White Rainbow Moonstone, Pear Shape, Translucent

47.73ct White Rainbow Moonstone, Pear Shape, Translucent

35.9 x 23 mm

$ 332.77

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14.10ctw Brown Rutile Quartz, Sphere / Ball, Transparent

14.10ctw Brown Rutile Quartz, Sphere / Ball, Transparent

10 mm (calibrated)

$ 22.39

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0.85ct Yellow Beryl, Oval, VVS

0.85ct Yellow Beryl, Oval, VVS

8 x 6 mm (calibrated)

$ 16.93

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1.41ct Green Sphene, Oval, Transparent

1.41ct Green Sphene, Oval, Transparent

7.3 x 5.6 mm

$ 7.02

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2.58ct White Rainbow Moonstone, Oval, Transparent

2.58ct White Rainbow Moonstone, Oval, Transparent

11 x 9 mm (calibrated)

$ 84.83

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5.68ctw Yellow Citrine, Oval, VVS-VS

5.68ctw Yellow Citrine, Oval, VVS-VS

10 x 8 mm (calibrated)

$ 31.12

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2.60ct Violet Amethyst, Trillion, VS

2.60ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 17.09

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1.74ctw Orange Sunstone, Oval, Translucent

1.74ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 12.13

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1.32ct Pink Morganite, Round, VVS-VS

1.32ct Pink Morganite, Round, VVS-VS

7 mm (calibrated)

$ 51.28

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11.30ct Brown Smoky Quartz, Round, VVS-VS

11.30ct Brown Smoky Quartz, Round, VVS-VS

16 mm (calibrated)

$ 13.74

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1.59ct Pink Strawberry Quartz, Round, Translucent

1.59ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 12.19

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0.87ct Yellow Color-Change Diaspore, Oval, VS

0.87ct Yellow Color-Change Diaspore, Oval, VS

10.4 x 4.4 mm

$ 30.49

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8.30ct Brown Smoky Quartz, Emerald Cut, VVS

8.30ct Brown Smoky Quartz, Emerald Cut, VVS

12 x 12 mm (calibrated)

$ 9.92

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2.44ct Red Almandine Garnet, Oval, VS

2.44ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 91.13

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25.76ct Brown Moonstone, Oval, Opaque

25.76ct Brown Moonstone, Oval, Opaque

20 x 15 mm (calibrated)

$ 42.33

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0.47ct Yellow Citrine, Cushion, VVS-VS

0.47ct Yellow Citrine, Cushion, VVS-VS

5 x 5 mm (calibrated)

$ 3.51

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6.70ct Multicolor Ruby In Fuchsite, Marquise, Translucent

6.70ct Multicolor Ruby In Fuchsite, Marquise, Translucent

23.6 x 11.4 mm

$ 49.48

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64.79ct Black Obsidian, Square, Opaque

64.79ct Black Obsidian, Square, Opaque

24.6 x 24.3 mm

$ 53.78

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2.29ct Green Peridot, Cushion, VS

2.29ct Green Peridot, Cushion, VS

8.5 x 7.1 mm

$ 81.97

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5.21ct Multicolor Pietersite, Oval, Opaque

5.21ct Multicolor Pietersite, Oval, Opaque

15.8 x 11 mm

$ 12.61

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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 had a very easy time navigating the web page and using filters to find what I was looking for. The varied selection was nice to see and pricing is clear and fair.

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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.

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