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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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6.26ct Yellow Citrine, Emerald Cut, VVS-VS

14 x 10 mm (calibrated)

$ 48.01

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1.44ctw Green Demantoid Garnet, Round, VS-SI

4 mm (calibrated)

$ 142.39

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7.05ct Multicolor Fire Agate, Fancy, Opaque

15.3 x 10.7 mm

$ 52.99

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1.01ct Violet Spinel, Oval, VS

6.4 x 5.4 mm

$ 113.24

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1.71ctw Red Pyrope Garnet, Pear Shape, VVS-VS

7 x 5 mm (calibrated)

$ 8.52

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1.07ct Yellow Golden Beryl, Oval, VS

8.2 x 6.3 mm

$ 29.32

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6.04ct Yellow Cat'S Eye Opal, Oval, Opaque

14 x 9 mm (calibrated)

$ 18.04

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2.29ctw Green Peridot, Emerald Cut, VVS-VS

6 x 4 mm (calibrated)

$ 62.73

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1.44ct Yellow Citrine, Emerald Cut, VVS-VS

8 x 6 mm (calibrated)

$ 9.46

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1.03ct Pink Strawberry Quartz, Oval, Translucent

7.6 x 6 mm

$ 13.03

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1.21ct Multicolor Opal, Pear Shape, Transparent

10 x 8 mm (calibrated)

$ 29.17

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2.80ct Green Prehnite, Oval, Transparent

9.4 x 8 mm

$ 18.01

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2.69ctw Red Pyrope Garnet, Marquise, VVS

10.1 x 5.2 mm

$ 23.57

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4.13ctw Green Tsavorite Garnet, Round, VS

2.1 mm (calibrated)

$ 164.54

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7.80ct Multicolor Quartz With Marcasite, Baguette, Transparent

21.6 x 8.6 mm

$ 49.91

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2.15ct Red Almandine Garnet, Oval, VS

9 x 7 mm (calibrated)

$ 80.30

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6.22ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 37.35

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2.35ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 5.20

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33.60ct Gray Hematite, Pear Shape, Opaque

24.5 x 17.3 mm

$ 32.76

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7.15ctw Multicolor Labradorite, Marquise, Translucent

14 x 7 mm (calibrated)

$ 15.80

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0.33ct Blue Kyanite, Round, VS

3.8 mm

$ 5.92

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1.21ct Green Peridot, Oval, VS

8 x 6 mm (calibrated)

$ 10.85

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5.64ct Pink Rose Quartz, Round, Transparent

12 mm (calibrated)

$ 22.43

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17.54ct Multicolor Chrysocolla, Cushion, Opaque

23 x 18.1 mm

$ 24.89

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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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It was good. There was a large selection at prices I could afford.

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Web site is very simple to navigate Selection is terrific

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Enjoy viewing the selections. Excellent product

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

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Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

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Great selection of gems at a reasonable price

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