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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
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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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White 5 mm Gemstones
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Single
Pairs
Lots
Faceted
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0.66ct Green Sapphire, Heart, VS

0.66ct Green Sapphire, Heart, VS

5 x 5 mm (calibrated)

$ 43.50

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0.19ct Orange Sapphire, Marquise, VVS-VS
Sapphire Product Video (509600)

0.19ct Orange Sapphire, Marquise, VVS-VS

4.9 x 2.6 mm

$ 4.43

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0.85ct Orange Hessonite Garnet, Cushion, SI

0.85ct Orange Hessonite Garnet, Cushion, SI

5 x 5 mm (calibrated)

$ 20.20

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1.74ctw Blue Tanzanite, Pear Shape, VS

1.74ctw Blue Tanzanite, Pear Shape, VS

5 x 4 mm (calibrated)

$ 80.39

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0.61ct Orange Zircon, Oval, VS

0.61ct Orange Zircon, Oval, VS

5 x 4 mm (calibrated)

$ 18.30

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0.60ct Green Cat's Eye Alexandrite, Oval, Opaque

0.60ct Green Cat's Eye Alexandrite, Oval, Opaque

4.9 x 4.6 mm

$ 150.00

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0.68ct Orange Sphalerite, Round, VS-SI

0.68ct Orange Sphalerite, Round, VS-SI

5 mm (calibrated)

$ 40.80

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1.50ctw Red Pyrope Garnet, Square, VVS

1.50ctw Red Pyrope Garnet, Square, VVS

5 x 5 mm (calibrated)

$ 13.86

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1.43ctw Red Pyrope Garnet, Square, VS

1.43ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 13.21

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2.19ctw Blue Tanzanite, Pear Shape, VS

2.19ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 101.18

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1.59ctw Blue Apatite, Oval, Transparent

1.59ctw Blue Apatite, Oval, Transparent

5 x 3.6 mm

$ 39.37

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0.55ct Orange Spessartite Garnet, Oval, VS

0.55ct Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 23.10

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3.33ctw Purple Rhodolite Garnet, Oval, VS

3.33ctw Purple Rhodolite Garnet, Oval, VS

5 x 3 mm (calibrated)

$ 43.39

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0.45ct Green Sapphire, Oval, VS

0.45ct Green Sapphire, Oval, VS

5 x 4 mm (calibrated)

$ 40.08

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1.22ctw Blue Sapphire, Round, VS
Sapphire Product Video (449657)

1.22ctw Blue Sapphire, Round, VS

5 mm (calibrated)

$ 644.16

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0.36ctw Orange Sapphire, Marquise, VVS

0.36ctw Orange Sapphire, Marquise, VVS

5 x 2.5 mm (calibrated)

$ 29.71

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0.36ct Blue Tanzanite, Pear Shape, VS

0.36ct Blue Tanzanite, Pear Shape, VS

5.1 x 4.2 mm

$ 25.92

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0.47ct Blue Sapphire, Heart, VS

0.47ct Blue Sapphire, Heart, VS

4.8 x 4.5 mm

$ 39.48

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3.24ctw Purple Rhodolite Garnet, Oval, VS

3.24ctw Purple Rhodolite Garnet, Oval, VS

5.1 x 3.2 mm

$ 42.22

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0.50ct Yellow Sapphire, Emerald Cut, VVS-VS

0.50ct Yellow Sapphire, Emerald Cut, VVS-VS

5.1 x 3.8 mm

$ 32.74

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0.64ct Pink Tourmaline, Round, Transparent

0.64ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 30.72

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0.59ctw Blue Topaz, Oval, VVS-VS

0.59ctw Blue Topaz, Oval, VVS-VS

5 x 3 mm (calibrated)

$ 4.96

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2.04ctw Green Demantoid Garnet, Oval, VS-SI
Demantoid Garnet Product Video (498894)

2.04ctw Green Demantoid Garnet, Oval, VS-SI

5 x 4 mm (calibrated)

$ 269.28

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1.40ctw Green Demantoid Garnet, Oval, VS

1.40ctw Green Demantoid Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 184.80

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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 -> 9 star ratings

I wish there were options for jewelry settings

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 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

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 -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I could see the actual gem I was buying

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