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3 Carat Loose Gemstones

Browse our selection of natural 3 carat gemstones, perfect for fine jewelry and investment pieces.

3 ct Gemstones Weight
3 ct Gemstones Size
3 ct Gemstones Clarity
3 ct Gemstones Price
3 ct Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color 3 ct Gemstones
Black 3 ct Gemstones
Blue 3 ct Gemstones
Brown 3 ct Gemstones
Golden 3 ct Gemstones
Gray
Green 3 ct Gemstones
Multicolor 3 ct Gemstones
Orange 3 ct Gemstones
Pink 3 ct Gemstones
Purple 3 ct Gemstones
Red 3 ct Gemstones
Turquoise 3 ct Gemstones
Violet 3 ct Gemstones
White 3 ct Gemstones
Yellow 3 ct Gemstones
Single
Pairs
Lots
Faceted
Cabochons
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3.40ct Blue Chalcedony, Oval, Transparent

11 x 9 mm (calibrated)

$ 6.80

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3.20ct Multicolor Opal Triplet, Fancy, Opaque

15.5 x 9.1 mm

$ 96.00

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3.19ct Red Star Ruby, Oval, Opaque

9.5 x 6.9 mm

$ 61.25

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3.46ct Multicolor Pietersite, Marquise, Translucent

21.2 x 5.8 mm

$ 9.84

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3.42ct Green Prehnite, Oval, Transparent

10.3 x 8.7 mm

$ 22.39

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3.04ct Multicolor Black Opal, Pear Shape, Opaque

15.3 x 7.2 mm

$ 106.70

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3.11ct Multicolor Opal Triplet, Fancy, Opaque

15.3 x 8.9 mm

$ 93.30

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3.13ct Blue Star Sapphire, Oval, Opaque

9 x 7 mm (calibrated)

$ 78.50

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3.01ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 27.82

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3.15ct Purple Star Ruby, Oval, Opaque

8.6 x 6.8 mm

$ 175.27

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3.36ct Multicolor Fire Agate, Oval, Opaque

10.5 x 7.5 mm

$ 34.28

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3.00ct Green Fluorite, Pear Shape, Transparent

10 x 8 mm (calibrated)

$ 14.87

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3.25ct Yellow Sapphire, Cushion, VS-SI

8.5 x 8.1 mm

$ 2,218.44

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3.03ct Purple Cat'S Eye Tourmaline, Cushion, Translucent

10.3 x 6.6 mm

$ 545.40

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3.03ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 25.45

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3.41ct Green Cat'S Eye Opal, Oval, Opaque

10.9 x 9.4 mm

$ 6.82

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3.23ct Blue Tanzanite, Oval, Translucent

10 x 7 mm (calibrated)

$ 33.68

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3.17ct Green Malachite, Oval, Opaque

10 x 8 mm (calibrated)

$ 3.80

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3.16ct Red Andesine Labradorite, Pear Shape, Transparent

11.6 x 8.7 mm

$ 47.40

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3.34ct Red Andesine Labradorite, Cushion, Transparent

10.8 x 8.5 mm

$ 50.10

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3.16ct Pink Morganite, Oval, Transparent

10 x 8 mm (calibrated)

$ 41.71

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3.21ct Purple Star Ruby, Oval, Opaque

8.2 x 6.6 mm

$ 178.60

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3.48ct Multicolor Labradorite, Baguette, Translucent

9 x 7 mm (calibrated)

$ 5.76

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3.09ct Pink Strawberry Quartz, Oval, Transparent

11 x 9 mm (calibrated)

$ 27.92

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Why Buy 3 Ct Gemstones from GemSelect?

Natural 3 Carat Gemstones

Our 3 carat gemstones are 100% natural and carefully selected for quality, color, and clarity, making them ideal for standout jewelry designs.

3 Carat Loose Gemstones for Sale

Explore a wide range of 3 carat loose gemstones available in popular varieties such as sapphire, ruby, tourmaline, and more, all ready for custom settings.

3 Carat Loose Gemstones for Jewelry

Best Uses for 3 Carat Gems

3 carat gems are ideal for statement rings, pendants, and high-end jewelry pieces, offering a noticeable size without becoming impractical for daily wear.

Faceted and Cabochon Options

Choose from faceted 3ct gemstones for brilliance and sparkle or cabochon cuts for smooth surfaces and unique visual appeal.

Color Variety in 3 Carat Stones

Our collection includes gemstones in a wide spectrum of colors, from vivid blues and reds to soft pastels and rare color-change varieties.

Calibrated 3 Carat Gemstones

Find calibrated stones that fit standard jewelry settings, helping jewelers and designers save time while ensuring precise results.

Investment-Grade Gemstones

Many 3 carat gemstones offer excellent value for collectors, combining desirable size with quality characteristics that can appreciate over time.

Wholesale 3 Carat Gemstones

We offer competitive pricing on bulk purchases of 3ct gemstones, ideal for jewelers, designers, and resellers seeking consistent supply.

Learn more about gemstone properties, grading, and selection on our Gemstone Information Page.

FAQs

Is a 3 carat gemstone considered large?

Yes, a 3 carat gemstone is considered a medium-to-large size, making it ideal for statement jewelry while still being wearable daily.

Which gemstones look best at 3 carats?

Sapphires, rubies, aquamarines, and tourmalines are popular choices, as their color and clarity are well showcased at 3 carats.

Are all 3 carat gemstones the same size?

No, size varies depending on the gemstone type and density. Two stones with the same carat weight can have different dimensions.

Are your 3 carat gemstones natural?

Yes, all gemstones are natural, with any treatments clearly disclosed to ensure full transparency.

Can I use a 3 carat gemstone for an engagement ring?

Absolutely, 3 carat gemstones are a popular choice for engagement rings, offering impressive size and visual impact.

Do you offer calibrated 3ct gemstones?

Yes, we stock calibrated sizes suitable for standard jewelry settings, making them easy to mount.

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

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate
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