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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
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1.82ct Purple Rhodolite Garnet, Oval, VS

1.82ct Purple Rhodolite Garnet, Oval, VS

7.4 x 6.6 mm

$ 74.65

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1.22ctw Green Peridot, Marquise, VS

1.22ctw Green Peridot, Marquise, VS

8 x 4 mm (calibrated)

$ 18.23

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14.91ct White Rainbow Moonstone, Pear Shape, Translucent

14.91ct White Rainbow Moonstone, Pear Shape, Translucent

23.2 x 13.3 mm

$ 103.95

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6.29ct Green Druzy Variscite, Fancy, Opaque

6.29ct Green Druzy Variscite, Fancy, Opaque

23.7 x 9.9 mm

$ 9.11

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1.66ct Yellow Citrine, Emerald Cut, VVS-VS

1.66ct Yellow Citrine, Emerald Cut, VVS-VS

8.2 x 6.3 mm

$ 10.37

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1.02ct Yellow Sphene, Oval, Transparent

1.02ct Yellow Sphene, Oval, Transparent

6.4 x 5.4 mm

$ 5.08

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0.60ct Yellow Color-Change Diaspore, Cushion, VVS-VS

0.60ct Yellow Color-Change Diaspore, Cushion, VVS-VS

5.2 x 4.4 mm

$ 31.67

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1.14ctw Yellow Citrine, Pear Shape, VS

1.14ctw Yellow Citrine, Pear Shape, VS

7 x 5 mm (calibrated)

$ 6.24

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2.57ct Multicolor Opal, Oval, Translucent

2.57ct Multicolor Opal, Oval, Translucent

11 x 9 mm (calibrated)

$ 64.63

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2.74ctw Brown Color-Change Garnet, Oval, VS

2.74ctw Brown Color-Change Garnet, Oval, VS

6.8 x 5.5 mm

$ 218.90

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1.04ct Purple Spinel, Oval, VS

1.04ct Purple Spinel, Oval, VS

7.4 x 5.5 mm

$ 73.29

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15.21ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

15.21ct Multicolor Rainbow Pyrite, Pear Shape, Opaque

24.6 x 15.4 mm

$ 45.45

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1.06ct Purple Rhodolite Garnet, Oval, VS-SI

1.06ct Purple Rhodolite Garnet, Oval, VS-SI

7 x 5 mm (calibrated)

$ 39.59

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1.84ct Red Almandine Garnet, Oval, VVS-VS

1.84ct Red Almandine Garnet, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 68.72

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19.49ct Pink Rose Quartz, Oval, Transparent

19.49ct Pink Rose Quartz, Oval, Transparent

18 x 13 mm (calibrated)

$ 25.63

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1.78ctw Yellow Citrine, Square, VVS-VS

1.78ctw Yellow Citrine, Square, VVS-VS

5.9 x 5.7 mm

$ 13.65

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5.29ct Pink Kunzite, Cushion, VS

5.29ct Pink Kunzite, Cushion, VS

11 x 9 mm (calibrated)

$ 105.80

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3.16ct Yellow Citrine, Oval, VVS-VS

3.16ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 24.24

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3.37ct Yellow Citrine, Pear Shape, VVS-VS

3.37ct Yellow Citrine, Pear Shape, VVS-VS

12 x 10 mm (calibrated)

$ 21.16

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0.64ct Blue Kyanite, Round, SI

0.64ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 15.94

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1.99ctw Green Tsavorite Garnet, Baguette, VS
Tsavorite Garnet Product Video (393589)

1.99ctw Green Tsavorite Garnet, Baguette, VS

3 x 2 mm (calibrated)

$ 99.93

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46.97ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

46.97ct Multicolor Rhodochrosite, Sphere / Ball, Opaque

16.9 mm

$ 102.92

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1.27ct Yellow Color-Change Diaspore, Baguette, VVS-VS

1.27ct Yellow Color-Change Diaspore, Baguette, VVS-VS

8.8 x 4.6 mm

$ 60.85

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0.76ctw Green Peridot, Pear Shape, VVS-VS

0.76ctw Green Peridot, Pear Shape, VVS-VS

6 x 4 mm (calibrated)

$ 12.49

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

I have made many purchases from GemSelect over the years, and I have a beautiful collection of jewelry as a result. My purchases have always been exactly as described, and I have enjoyed doing business with you.

Posted By MMM in July, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Maneuvering through the website was easy and enjoyable. I have ordered from GemSelect before and that experience was also pleasant.

Posted By Willow in August, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 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 -> 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
→ View All GemSelect Reviews on Bizrate
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