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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
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
Pairs
Lots
Faceted
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1.62ctw Red Rhodolite Garnet, Square, VS

1.62ctw Red Rhodolite Garnet, Square, VS

5 x 5 mm (calibrated)

$ 17.08

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0.90ctw Purple Sapphire, Oval, VS

0.90ctw Purple Sapphire, Oval, VS

5.1 x 4.2 mm

$ 81.97

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2.28ctw Red Pyrope Garnet, Square, VS

2.28ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 21.07

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0.57ct Yellow Color-Change Diaspore, Round, VS

0.57ct Yellow Color-Change Diaspore, Round, VS

5 mm (calibrated)

$ 36.25

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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

$ 49.02

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0.70ct Yellow Sapphire, Round, VVS-VS

0.70ct Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 53.98

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0.77ctw Green Sapphire, Oval, VS

0.77ctw Green Sapphire, Oval, VS

5 x 4 mm (calibrated)

$ 68.58

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0.39ct Orange Sapphire, Oval, VS
Sapphire Product Video (732611)

0.39ct Orange Sapphire, Oval, VS

4.9 x 3.8 mm

$ 70.20

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0.36ct Orange Sapphire, Pear Shape, VVS-VS

0.36ct Orange Sapphire, Pear Shape, VVS-VS

5 x 4 mm (calibrated)

$ 24.19

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0.31ct Blue Tanzanite, Pear Shape, VS

0.31ct Blue Tanzanite, Pear Shape, VS

5 x 3.8 mm

$ 22.32

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1.14ctw Blue Sapphire, Round, VS
Sapphire Product Video (441570)

1.14ctw Blue Sapphire, Round, VS

5 mm (calibrated)

$ 601.92

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0.44ct Orange Sapphire, Pear Shape, VS

0.44ct Orange Sapphire, Pear Shape, VS

5.2 x 4 mm

$ 79.20

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0.75ct Green Tourmaline, Round, Transparent

0.75ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 18.00

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0.60ct Red Pyrope Garnet, Heart, VVS-VS

0.60ct Red Pyrope Garnet, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 5.76

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0.39ct Orange Sapphire, Pear Shape, VVS-VS

0.39ct Orange Sapphire, Pear Shape, VVS-VS

5 x 4 mm (calibrated)

$ 70.20

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1.46ctw Red Pyrope Garnet, Square, VVS-VS

1.46ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 13.49

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1.07ct Black Diamond, Square, Opaque
Diamond Product Video (677842)

1.07ct Black Diamond, Square, Opaque

5 x 5 mm (calibrated)

$ 612.00

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0.51ctw Purple Sapphire, Oval, VS

0.51ctw Purple Sapphire, Oval, VS

4.9 x 3.1 mm

$ 53.56

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0.41ct Green Sapphire, Emerald Cut, VVS
Sapphire Product Video (708218)

0.41ct Green Sapphire, Emerald Cut, VVS

5.2 x 3.2 mm

$ 46.74

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0.57ct Green Tourmaline, Round, Transparent

0.57ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 13.68

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1.76ctw Green Sapphire, Oval, VS

1.76ctw Green Sapphire, Oval, VS

5 x 4 mm (calibrated)

$ 56.28

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0.74ctw Purple Sapphire, Oval, VS

0.74ctw Purple Sapphire, Oval, VS

5 x 4 mm (calibrated)

$ 85.38

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0.28ct Violet Iolite, Baguette, VS

0.28ct Violet Iolite, Baguette, VS

5 x 3 mm (calibrated)

$ 13.44

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0.65ct Green Sapphire, Heart, VVS-VS

0.65ct Green Sapphire, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 42.84

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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

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

Posted By Elansary in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very food

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