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Home › Gemstones › Natural Untreated Gemstones

Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

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

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
Single
Pairs
Lots
Faceted
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5.88ct Multicolor Coral, Oval, Translucent

5.88ct Multicolor Coral, Oval, Translucent

15.6 x 11.5 mm

$ 12.89

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1.44ct Blue Kyanite, Oval, SI

1.44ct Blue Kyanite, Oval, SI

7.2 x 5.3 mm

$ 29.98

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64.75ct Green Amazonite, Square, Opaque

64.75ct Green Amazonite, Square, Opaque

23.4 x 23.1 mm

$ 37.62

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7.26ctw White Moonstone, Round, Translucent

7.26ctw White Moonstone, Round, Translucent

9 mm (calibrated)

$ 19.89

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7.14ct Pink Morganite, Trillion, Transparent

7.14ct Pink Morganite, Trillion, Transparent

13 x 13 mm (calibrated)

$ 78.23

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9.24ctw Yellow Citrine, Oval, Transparent

9.24ctw Yellow Citrine, Oval, Transparent

10 x 8 mm (calibrated)

$ 55.68

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2.09ctw Orange Sunstone, Oval, Translucent

2.09ctw Orange Sunstone, Oval, Translucent

8 x 6 mm (calibrated)

$ 14.57

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1.48ct Pink Tourmaline, Oval, VS

1.48ct Pink Tourmaline, Oval, VS

9 x 6.6 mm

$ 147.41

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17.21ct Brown Moonstone, Oval, Translucent

17.21ct Brown Moonstone, Oval, Translucent

20 x 15 mm (calibrated)

$ 20.57

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8.38ctw Green Amazonite, Round, Opaque

8.38ctw Green Amazonite, Round, Opaque

7 mm (calibrated)

$ 20.48

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1.48ct Purple Spinel, Cushion, VS

1.48ct Purple Spinel, Cushion, VS

7.4 x 5.8 mm

$ 116.74

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5.06ct Brown Smoky Quartz, Round, VVS-VS

5.06ct Brown Smoky Quartz, Round, VVS-VS

11 mm (calibrated)

$ 7.56

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79.45ct Violet Amethyst, Pear Shape, VVS
Amethyst Product Video (724422)

79.45ct Violet Amethyst, Pear Shape, VVS

33.7 x 22.6 mm

$ 595.07

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4.20ct Orange Sunstone, Oval, Translucent

4.20ct Orange Sunstone, Oval, Translucent

12 x 10 mm (calibrated)

$ 25.34

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0.94ctw Red Pyrope Garnet, Square, VVS-VS

0.94ctw Red Pyrope Garnet, Square, VVS-VS

4.2 x 4.2 mm

$ 7.21

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0.63ct Yellow Citrine, Pear Shape, VVS

0.63ct Yellow Citrine, Pear Shape, VVS

7 x 5 mm (calibrated)

$ 3.14

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1.07ct Red Malaya Garnet, Marquise, VS

1.07ct Red Malaya Garnet, Marquise, VS

9.9 x 5 mm

$ 49.24

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24.01ct Violet Amethyst, Emerald Cut, VVS

24.01ct Violet Amethyst, Emerald Cut, VVS

20 x 15 mm (calibrated)

$ 167.39

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11.86ct Multicolor Coral, Pear Shape, Translucent

11.86ct Multicolor Coral, Pear Shape, Translucent

20 x 15 mm (calibrated)

$ 37.03

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9.06ct Pink Rose Quartz, Emerald Cut, Transparent

9.06ct Pink Rose Quartz, Emerald Cut, Transparent

12.6 x 12.4 mm

$ 49.63

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1.88ct Pink Strawberry Quartz, Round, Translucent

1.88ct Pink Strawberry Quartz, Round, Translucent

8 mm (calibrated)

$ 14.43

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23.71ctw Multicolor Coral, Fancy, Opaque

23.71ctw Multicolor Coral, Fancy, Opaque

21 x 14 mm

$ 44.94

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6.04ct Multicolor Rainbow Pyrite, Trillion, Opaque

6.04ct Multicolor Rainbow Pyrite, Trillion, Opaque

17.8 x 13.8 mm

$ 21.23

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6.38ctw Brown Tiger'S Eye, Oval, Opaque

6.38ctw Brown Tiger'S Eye, Oval, Opaque

10 x 8 mm (calibrated)

$ 6.36

View Gem
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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

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

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love this website! Looking forward to ordering consistently throughout the years to come building a personal collection.

Posted By Torgo in August, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
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
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