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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
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0.16Ctw I Diamond, Round, Vvs-Vs

0.16Ctw I Diamond, Round, Vvs-Vs

2.8 mm (calibrated)

$ 291.86

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13.37Ct Light Bubblegum Pink Morganite, Marquise, Vs
Morganite Product Video (594874)

13.37Ct Light Bubblegum Pink Morganite, Marquise, Vs

27.5 x 10.9 mm

$ 2,206.05

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3.07Ctw Multicolor Andalusite, Round, Vs-Si

3.07Ctw Multicolor Andalusite, Round, Vs-Si

4 mm (calibrated)

$ 180.58

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2.85Ct Light Yellow Golden Beryl, Round, Vvs

2.85Ct Light Yellow Golden Beryl, Round, Vvs

10 mm (calibrated)

$ 75.24

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9.27Ct Coral Pink Morganite, Trillion, Translucent

9.27Ct Coral Pink Morganite, Trillion, Translucent

14 x 14 mm (calibrated)

$ 122.36

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2.02Ct Pinkish Red Ruby, Cushion, Si
Ruby Product Video (569416)

2.02Ct Pinkish Red Ruby, Cushion, Si

7 x 7 mm (calibrated)

$ 9,045.32

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3.64Ctw Multicolor Andalusite, Oval, Vs-Si

3.64Ctw Multicolor Andalusite, Oval, Vs-Si

6 x 4 mm (calibrated)

$ 196.56

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1.10Ct Light Golden Morganite, Oval, Vs

1.10Ct Light Golden Morganite, Oval, Vs

8 x 6 mm (calibrated)

$ 79.86

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0.89Ct Light Yellow Morganite, Cushion, Vs

0.89Ct Light Yellow Morganite, Cushion, Vs

6 x 6 mm (calibrated)

$ 58.74

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0.14Ctw I Diamond, Round, Vvs-Vs

0.14Ctw I Diamond, Round, Vvs-Vs

2.6 mm (calibrated)

$ 306.46

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1.06Ct Medium Purple Sapphire, Pear Shape, Vs
Sapphire Product Video (447772)

1.06Ct Medium Purple Sapphire, Pear Shape, Vs

8.2 x 5.6 mm

$ 673.49

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1.36Ct Medium Purple Spinel, Oval, Vvs
Spinel Product Video (349458)

1.36Ct Medium Purple Spinel, Oval, Vvs

8.4 x 6.1 mm

$ 272.00

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1.55Ct Deep Mauve Tone Spinel, Cushion, Vs

1.55Ct Deep Mauve Tone Spinel, Cushion, Vs

6.6 x 6.2 mm

$ 133.00

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1.67Ct Cognac Diamond, Round, Si
Diamond Product Video (378646)

1.67Ct Cognac Diamond, Round, Si

7.5 mm (calibrated)

$ 4,342.00

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5.55Ct Medium Orange Imperial Topaz, Pear Shape, Vvs
Imperial Topaz Product Video (346661)

5.55Ct Medium Orange Imperial Topaz, Pear Shape, Vvs

16.5 x 7.1 mm

$ 3,729.60

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1.86Ct Flamingo Pink Morganite, Pear Shape, Vs

1.86Ct Flamingo Pink Morganite, Pear Shape, Vs

11.8 x 6.3 mm

$ 171.86

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1.39Ct Yellow Green Chrysoberyl, Pear Shape, Vvs-Vs
Chrysoberyl Product Video (366486)

1.39Ct Yellow Green Chrysoberyl, Pear Shape, Vvs-Vs

8.6 x 5.9 mm

$ 195.17

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1.46Ct Medium-Dark Purple Spinel, Cushion, Vs

1.46Ct Medium-Dark Purple Spinel, Cushion, Vs

6.3 x 6 mm

$ 134.90

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0.21Ctw I Diamond, Round, Vvs-Vs
Diamond Product Video (565098)

0.21Ctw I Diamond, Round, Vvs-Vs

3 mm (calibrated)

$ 383.08

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1.24Ct Deep Purple Spinel, Cushion, Vs

1.24Ct Deep Purple Spinel, Cushion, Vs

7 x 5.8 mm

$ 178.56

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1.15Ct Cognac Diamond, Cushion, Vs-Si
Diamond Product Video (460448)

1.15Ct Cognac Diamond, Cushion, Vs-Si

6.3 x 5.6 mm

$ 3,187.80

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1.34Ct Light Grape Purple Spinel, Cushion, Vs
Spinel Product Video (545751)

1.34Ct Light Grape Purple Spinel, Cushion, Vs

6.7 x 5.9 mm

$ 119.70

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0.46Ctw Cognac Diamond, Round, Vs
Diamond Product Video (564572)

0.46Ctw Cognac Diamond, Round, Vs

4 mm (calibrated)

$ 843.15

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1.50Ct Champagne Diamond, Round, Si
Diamond Product Video (378642)

1.50Ct Champagne Diamond, Round, Si

7 mm (calibrated)

$ 5,148.00

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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 -> 8 star ratings

Good prices

Posted By TRM in October, 2025
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 -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I was looking for a small gift for a friend- the process is the same as every other time and was very simple, and she even got her gift early! On the downside, there's no way to easily keep track of multiple Shipping Addresses, so if I want to send a gift to Friend A and to Friend B, I have to overwrite everything and it's a fair bit clunky in that regard.

Posted By Jezzi in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

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

Posted By Zorah in February, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

Posted By Atsu in December, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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