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5 mm Gemstones for Jewelry

Browse our selection of precisely calibrated 5 mm gemstones, ideal for consistent and professional jewelry designs.

5 mm Gemstones Weight
5 mm Gemstones Size
5 mm Gemstones Clarity
5 mm Gemstones Price
5 mm Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
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Black 5 mm Gemstones
Blue 5 mm Gemstones
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Green 5 mm Gemstones
Multicolor 5 mm Gemstones
Orange 5 mm Gemstones
Pink 5 mm Gemstones
Purple 5 mm Gemstones
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Turquoise 5 mm Gemstones
Violet 5 mm Gemstones
White 5 mm Gemstones
Yellow 5 mm Gemstones
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Pairs
Lots
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0.44ct Orange Spessartite Garnet, Oval, VS

0.44ct Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 15.84

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0.43ct Green Sapphire, Briolette, VS

0.43ct Green Sapphire, Briolette, VS

4.8 x 3.2 mm

$ 46.44

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0.80ct Blue Kyanite, Round, SI

0.80ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 24.00

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0.62ct Blue Sapphire, Round, VVS

0.62ct Blue Sapphire, Round, VVS

5 mm (calibrated)

$ 503.20

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1.73ctw Green Demantoid Garnet, Oval, VS
Demantoid Garnet Product Video (461710)

1.73ctw Green Demantoid Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 228.36

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1.42ctw Red Rhodolite Garnet, Square, VVS-VS

1.42ctw Red Rhodolite Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 14.99

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0.36ct Orange Sapphire, Oval, VS

0.36ct Orange Sapphire, Oval, VS

5 x 4 mm (calibrated)

$ 64.80

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0.28ct Violet Iolite, Emerald Cut, VS

0.28ct Violet Iolite, Emerald Cut, VS

5 x 3 mm (calibrated)

$ 13.44

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0.56ct Pink Tourmaline, Round, Transparent

0.56ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 26.88

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0.40ct Yellow Sapphire, Emerald Cut, VS

0.40ct Yellow Sapphire, Emerald Cut, VS

5 x 3.2 mm

$ 26.18

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0.71ct Blue Kyanite, Round, SI

0.71ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 21.30

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0.68ct Yellow Sapphire, Round, VVS-VS

0.68ct Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 52.43

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1.45ctw Red Pyrope Garnet, Square, VVS-VS

1.45ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 13.40

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0.97ctw White Zircon, Oval, VVS-VS
Zircon Product Video (630679)

0.97ctw White Zircon, Oval, VVS-VS

5.1 x 3.2 mm

$ 57.04

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0.51ctw Purple Sapphire, Oval, VS

0.51ctw Purple Sapphire, Oval, VS

5 x 3 mm (calibrated)

$ 53.56

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0.57ct Pink Tourmaline, Round, Transparent

0.57ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 27.36

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2.46ctw Orange Sapphire, Round, VVS-VS

2.46ctw Orange Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 194.99

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0.37ctw Purple Sapphire, Marquise, VS

0.37ctw Purple Sapphire, Marquise, VS

5.2 x 2.7 mm

$ 38.84

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0.75ctw Green Sapphire, Oval, VS

0.75ctw Green Sapphire, Oval, VS

4.8 x 3.9 mm

$ 66.80

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0.54ct Multicolor Sapphire, Trillion, VS

0.54ct Multicolor Sapphire, Trillion, VS

5 x 5 mm (calibrated)

$ 51.84

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0.60ct Blue Sapphire, Round, VVS-VS

0.60ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 486.97

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0.47ct Blue Sapphire, Briolette, VS

0.47ct Blue Sapphire, Briolette, VS

5.1 x 3.3 mm

$ 42.30

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0.52ct Blue Sapphire, Heart, VS

0.52ct Blue Sapphire, Heart, VS

5 x 5 mm (calibrated)

$ 43.68

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0.75ctw Green Sapphire, Oval, VVS-VS

0.75ctw Green Sapphire, Oval, VVS-VS

5 x 4 mm (calibrated)

$ 66.80

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Why Buy 5 Mm Gemstones from GemSelect?

Precision Cut 5 mm Gemstones

Our 5 mm gemstones are expertly cut to precise dimensions, making them ideal for standardized jewelry settings such as rings, earrings, and bracelets.

Shop 5mm Loose Gemstones Online

Discover a wide range of 5mm loose gemstones available in many varieties, colors, and shapes, all ready for immediate shipment worldwide.

Perfect Size for Jewelry Settings

The 5 mm size is one of the most popular choices for jewelry, offering a balance between visibility and wearability for rings, studs, and pendants.

Wide Variety of Gemstone Types

Choose from sapphires, garnets, amethyst, citrine, peridot, and many other gemstones, all available in calibrated 5 mm sizes.

Faceted and Cabochon Options

Our 5 mm gemstones are available in both faceted cuts for maximum brilliance and cabochon finishes for a smooth, classic appearance.

Calibrated Gemstones for Easy Setting

Calibrated 5mm gemstones ensure a consistent fit in pre-made jewelry mounts, saving time and ensuring professional results for jewelers.

Natural and Certified Gemstones

All our gemstones are natural and carefully sourced, with full disclosure of any treatments to ensure transparency and trust.

Wholesale 5 mm Gemstones

We offer competitive pricing for bulk purchases, making our 5 mm gemstones an excellent choice for jewelry manufacturers and resellers.

Learn more about gemstone cuts, sizes, and quality on our Gemstone Cut Information Page.

FAQs

What does 5 mm mean in gemstones?

5 mm refers to the diameter or size of the gemstone, commonly used for round stones, making it a standardized size for jewelry settings.

Are 5 mm gemstones considered large?

5 mm gemstones are considered medium-sized, offering a noticeable presence while remaining comfortable for everyday wear.

Are 5mm gemstones calibrated?

Yes, most 5mm gemstones are precision-cut to calibrated sizes, ensuring they fit standard jewelry mounts without adjustment.

Which gemstones are available in 5 mm size?

Many gemstones are available in 5 mm, including sapphire, ruby, garnet, amethyst, citrine, peridot, and more.

Can I use 5 mm gemstones for engagement rings?

Yes, 5 mm gemstones are a popular choice for engagement rings, especially for those seeking a balanced and practical stone size.

Do 5 mm gemstones work with standard settings?

Yes, calibrated 5 mm gemstones are designed to fit standard jewelry settings, making them easy to use in pre-made mounts.

Are your 5 mm gemstones natural?

All our gemstones are natural, with any treatments clearly disclosed to maintain transparency and customer confidence.

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

Great site for finding specific stones and sizes for individual pieces of jewelry

Posted By Designer in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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