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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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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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1.91ctw Blue Tanzanite, Pear Shape, VS

1.91ctw Blue Tanzanite, Pear Shape, VS

5 x 3 mm (calibrated)

$ 88.25

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0.57ct Blue Sapphire, Heart, VS

0.57ct Blue Sapphire, Heart, VS

5 x 5 mm (calibrated)

$ 47.88

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0.54ct Yellow Citrine, Cushion, Transparent

0.54ct Yellow Citrine, Cushion, Transparent

5 x 5 mm (calibrated)

$ 4.86

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0.64ct Orange Sapphire, Round, VVS-VS

0.64ct Orange Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 49.34

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3.12ctw White Rainbow Moonstone, Pear Shape, Transparent

3.12ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 82.37

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1.50ctw White Rainbow Moonstone, Pear Shape, Transparent

1.50ctw White Rainbow Moonstone, Pear Shape, Transparent

5 x 5 mm (calibrated)

$ 33.66

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1.84ctw Blue Apatite, Oval, VS

1.84ctw Blue Apatite, Oval, VS

5 x 3.9 mm

$ 48.70

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0.64ct Red Pyrope Garnet, Heart, VS

0.64ct Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 19.20

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3.59ctw Orange Hessonite Garnet, Emerald Cut, VS

3.59ctw Orange Hessonite Garnet, Emerald Cut, VS

5 x 5 mm (calibrated)

$ 85.30

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0.56ct Orange Spessartite Garnet, Oval, VS-SI

0.56ct Orange Spessartite Garnet, Oval, VS-SI

4.9 x 4.2 mm

$ 23.52

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0.26ct Violet Iolite, Baguette, VS-SI

0.26ct Violet Iolite, Baguette, VS-SI

5 x 3 mm (calibrated)

$ 12.48

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0.47ct Orange Spessartite Garnet, Oval, VS

0.47ct Orange Spessartite Garnet, Oval, VS

5 x 4 mm (calibrated)

$ 16.92

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1.93ctw Green Demantoid Garnet, Oval, VS-SI

1.93ctw Green Demantoid Garnet, Oval, VS-SI

5 x 4 mm (calibrated)

$ 254.76

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0.50ct Blue Sapphire, Round, VVS-VS

0.50ct Blue Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 405.80

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1.47ctw Blue Tanzanite, Pear Shape, VS

1.47ctw Blue Tanzanite, Pear Shape, VS

5 x 3.8 mm

$ 67.92

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1.51ctw White Zircon, Round, VVS-VS

1.51ctw White Zircon, Round, VVS-VS

5 mm (calibrated)

$ 53.82

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0.72ct Blue Sapphire, Cushion, VVS

0.72ct Blue Sapphire, Cushion, VVS

5 x 5 mm (calibrated)

$ 103.68

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0.61ct Green Sapphire, Heart, VS

0.61ct Green Sapphire, Heart, VS

5 x 5 mm (calibrated)

$ 40.20

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0.61ct Red Pyrope Garnet, Heart, VS

0.61ct Red Pyrope Garnet, Heart, VS

5 x 5 mm (calibrated)

$ 5.86

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0.71ct Blue Sapphire, Round, VVS

0.71ct Blue Sapphire, Round, VVS

5 mm (calibrated)

$ 509.21

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0.96ctw Yellow Citrine, Heart, VVS-VS

0.96ctw Yellow Citrine, Heart, VVS-VS

5 x 5 mm (calibrated)

$ 9.22

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0.59ct Green Sapphire, Oval, VVS-VS

0.59ct Green Sapphire, Oval, VVS-VS

5 x 4 mm (calibrated)

$ 52.55

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0.60ctw Blue Tanzanite, Pear Shape, VS

0.60ctw Blue Tanzanite, Pear Shape, VS

5.2 x 4 mm

$ 30.00

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3.69ctw Orange Hessonite Garnet, Emerald Cut, VS

3.69ctw Orange Hessonite Garnet, Emerald Cut, VS

5 x 5 mm (calibrated)

$ 87.67

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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

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

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
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
→ View All GemSelect Reviews on Bizrate
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