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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
Brown 5 mm Gemstones
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Gray 5 mm Gemstones
Green 5 mm Gemstones
Multicolor 5 mm Gemstones
Orange 5 mm Gemstones
Pink 5 mm Gemstones
Purple 5 mm Gemstones
Red 5 mm Gemstones
Turquoise 5 mm Gemstones
Violet 5 mm Gemstones
White 5 mm Gemstones
Yellow 5 mm Gemstones
Single
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Lots
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0.43ct Green Sapphire, Emerald Cut, VVS-VS

0.43ct Green Sapphire, Emerald Cut, VVS-VS

5.2 x 3.2 mm

$ 40.69

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0.38ct Pink Morganite, Round, VS

0.38ct Pink Morganite, Round, VS

5 mm (calibrated)

$ 15.77

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2.21ctw Red Pyrope Garnet, Square, VS

2.21ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 16.95

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0.96ctw Green Demantoid Garnet, Oval, VS
Demantoid Garnet Product Video (458547)

0.96ctw Green Demantoid Garnet, Oval, VS

5 x 4.2 mm

$ 157.29

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1.05ctw Violet Amethyst, Cushion, Transparent

1.05ctw Violet Amethyst, Cushion, Transparent

5 x 5 mm (calibrated)

$ 7.32

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2.08ctw Violet Tanzanite, Pear Shape, VS

2.08ctw Violet Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 79.76

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1.60ctw Blue Apatite, Round, Transparent

1.60ctw Blue Apatite, Round, Transparent

5 mm (calibrated)

$ 26.29

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0.47ct Green Sapphire, Emerald Cut, VS

0.47ct Green Sapphire, Emerald Cut, VS

5.1 x 3.3 mm

$ 44.47

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1.68ctw Multicolor Andalusite, Oval, VS

1.68ctw Multicolor Andalusite, Oval, VS

5.1 x 3.1 mm

$ 89.75

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1.47ctw Red Rhodolite Garnet, Square, VS

1.47ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.88

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1.36ctw White Zircon, Round, VS

1.36ctw White Zircon, Round, VS

5 mm (calibrated)

$ 35.76

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0.43ct Yellow Spessartite Garnet, Oval, VS-SI

0.43ct Yellow Spessartite Garnet, Oval, VS-SI

5 x 4 mm (calibrated)

$ 14.99

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0.45ct Yellow Citrine, Heart, VVS

0.45ct Yellow Citrine, Heart, VVS

5 x 5 mm (calibrated)

$ 2.99

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1.64ctw Red Pyrope Garnet, Square, VVS

1.64ctw Red Pyrope Garnet, Square, VVS

5 x 5 mm (calibrated)

$ 12.58

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0.84ct Yellow Sapphire, Round, VS
Sapphire Product Video (461376)

0.84ct Yellow Sapphire, Round, VS

5 mm (calibrated)

$ 104.66

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1.71ctw Red Pyrope Garnet, Square, VS

1.71ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 13.11

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0.55ct Blue Sapphire, Heart, VS

0.55ct Blue Sapphire, Heart, VS

5 x 5 mm (calibrated)

$ 31.96

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1.32ctw Orange Zircon, Oval, VS

1.32ctw Orange Zircon, Oval, VS

5.2 x 4.1 mm

$ 27.39

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1.98ctw Blue Tanzanite, Pear Shape, VS

1.98ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 97.62

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1.60ctw Red Pyrope Garnet, Square, VVS

1.60ctw Red Pyrope Garnet, Square, VVS

5 x 5 mm (calibrated)

$ 12.27

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0.94ct Orange Hessonite Garnet, Cushion, VS

0.94ct Orange Hessonite Garnet, Cushion, VS

5 x 5 mm (calibrated)

$ 13.98

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0.51ctw Blue Tanzanite, Marquise, VS

0.51ctw Blue Tanzanite, Marquise, VS

5 x 3 mm (calibrated)

$ 30.48

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0.53ct Pink Tourmaline, Round, Transparent

0.53ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 21.12

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0.50ct Gray Cat'S Eye Alexandrite, Oval, Opaque

0.50ct Gray Cat'S Eye Alexandrite, Oval, Opaque

5.1 x 3.5 mm

$ 83.00

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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

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Nothing bad to report. Everything is as expected. The gems and the price are all very good.

Posted By Dafanatic in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!

Posted By Geof in November, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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