90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
Home Gemstones 5mm Rounds

5mm Round Gemstones

Shop natural loose gemstones in a popular 5mm round size, ideal for jewelry settings, accent stones, matched designs and colorful custom pieces.

5mm Rounds Weight
5mm Rounds Size
5mm Rounds Clarity
5mm Rounds Price
5mm Rounds Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black 5mm Rounds
Blue 5mm Rounds
Brown 5mm Rounds
Golden
Gray 5mm Rounds
Green 5mm Rounds
Multicolor 5mm Rounds
Orange 5mm Rounds
Pink 5mm Rounds
Purple 5mm Rounds
Red 5mm Rounds
Turquoise 5mm Rounds
Violet 5mm Rounds
White 5mm Rounds
Yellow 5mm Rounds
Single
Pairs
Lots
Faceted
Cabochons
Clear All

0.62ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 20.58

View Gem

0.45ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 17.93

View Gem

0.64ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 12.75

View Gem

0.66ct Green Tourmaline, Round, Transparent

5 mm (calibrated)

$ 10.96

View Gem

0.62ct Blue Star Sapphire, Round, Opaque

5 mm (calibrated)

$ 20.58

View Gem

0.64ct Red Ruby, Round, VS-SI

5 mm (calibrated)

$ 205.79

View Gem

0.58ct Pink Sapphire, Round, VS

5 mm (calibrated)

$ 253.15

View Gem

2.76ctw Green Peridot, Round, VVS-VS

5 mm (calibrated)

$ 45.36

View Gem

0.55ct Blue Sapphire, Round, VVS

5 mm (calibrated)

$ 370.50

View Gem

0.60ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 404.19

View Gem

0.57ct Pink Spinel, Round, VS

5 mm (calibrated)

$ 42.58

View Gem

1.25ctw Orange Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 82.24

View Gem

0.67ct Blue Kyanite, Round, SI

5 mm (calibrated)

$ 16.68

View Gem

1.49ctw White Zircon, Round, VVS-VS

5 mm (calibrated)

$ 44.07

View Gem

0.47ct White Rainbow Moonstone, Round, Transparent

5 mm (calibrated)

$ 14.98

View Gem

2.32ctw Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 152.64

View Gem

0.69ct Multicolor Labradorite, Round, Translucent

5 mm (calibrated)

$ 1.68

View Gem

1.57ctw White Zircon, Round, VVS-VS

5 mm (calibrated)

$ 46.45

View Gem

0.79ct Red Ruby, Round, VS-SI

5 mm (calibrated)

$ 254.04

View Gem

3.33ctw Green Peridot, Round, VVS-VS

5 mm (calibrated)

$ 49.75

View Gem

1.38ctw Yellow Sapphire, Round, VS-SI

5 mm (calibrated)

$ 75.95

View Gem

0.50ct Yellow Color-Change Diaspore, Round, VS

5 mm (calibrated)

$ 19.17

View Gem

0.72ct Yellow Sapphire, Round, VVS-VS

5 mm (calibrated)

$ 46.08

View Gem

0.64ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 383.45

View Gem

Why Buy 5mm Rounds from GemSelect?

Shop Natural 5mm Round Loose Gemstones

Round gemstones are one of the most versatile choices for jewelry, and the 5mm size is especially useful for designs that need a balanced, wearable center stone or a noticeable accent. This category brings together natural loose gemstones cut in or near a 5mm round format so you can compare colors, gem varieties and individual stones in one convenient place.

Why Choose a 5mm Round Gemstone?

A 5mm round gem offers a classic look that works across many jewelry styles. It is large enough to show color and sparkle, yet small enough for everyday rings, stud earrings, delicate pendants, stackable designs and side-stone arrangements. The round shape is also widely supported by standard jewelry settings, making it a practical option for custom projects and replacements.

Popular Uses for 5mm Rounds

Customers often choose 5mm round gemstones for solitaire rings, birthstone jewelry, matching earrings, cluster designs, halo settings and multi-stone pieces. The size can also be useful when replacing a stone in an existing mounting, provided the exact measurements and setting requirements are checked carefully before purchase.

Selection of natural loose 5mm round gemstones

Compare Gem Type, Color and Measurements

Even within the same nominal size, natural gemstones can vary slightly in diameter, depth, color, clarity and overall appearance. Review each product listing for the actual measurements, carat weight, photos and gem details. If you are buying for a pre-made setting, the millimeter dimensions are usually more important than carat weight.

Buying Tips for Jewelry Projects

For earrings or symmetrical designs, look for stones with similar color, size and shape. For rings and pendants, consider how the gemstone color will pair with your chosen metal and setting style. If durability is important for daily wear, compare gem varieties carefully and choose a stone suited to the type of jewelry you plan to make.

FAQ: 5mm Round Gemstones

Are all stones in this category exactly 5mm?

They are listed as 5mm round gemstones, but natural cut stones may have slight measurement variations. Always check the individual product dimensions before ordering, especially for fitted settings.

Is a 5mm round gemstone good for a ring?

Yes, a 5mm round stone is a popular size for rings, including solitaire, birthstone, stacking and accent designs. Make sure the chosen gem variety is suitable for how often the ring will be worn.

Can I use 5mm rounds for earrings?

Yes, 5mm round gemstones are commonly used for stud earrings and matched jewelry. For pairs, compare the individual stones for size, color and overall appearance.

What matters more: millimeter size or carat weight?

For jewelry settings, millimeter size is usually the key measurement. Carat weight can vary between gem types because different minerals have different densities and cutting proportions.

How do I choose the right 5mm round gemstone?

Start with the jewelry style and setting size, then compare color, gem type, durability, measurements and the details shown on each individual listing.

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

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have made many purchases from GemSelect over the years, and I have a beautiful collection of jewelry as a result. My purchases have always been exactly as described, and I have enjoyed doing business with you.

Posted By MMM in July, 2026
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

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

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
Source: Bizrate
Enlarged Gemstone Image