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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (623): Round Shape 4 mm Gems Clear All
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9 pcs
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0.3ct Round Facet Multicolor Andalusite Gem (ID: 205878)
0.25 ct (total 2.28ctw) Andalusite
4.1 mm
$ 102.60
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182 pcs
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0.4ct Round Facet Deep Red Pyrope Garnet Gem (ID: 503911)
1 pc (avg. 0.36 ct) Pyrope Garnet
4.1 mm
$ 3.61
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2 pcs
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0.4ct Round Facet Pink Sapphire Gem (ID: 496462)
0.37 ct (total 0.74ctw) Sapphire
4 mm
$ 40.47
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4 pcs
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0.3ct Diamond-Cut Green Tsavorite Garnet Gem (ID: 473644)
0.26 ct (total 1.04ctw) Tsavorite Garnet
3.9 mm
$ 152.34
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2 pcs
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0.4ct Round Facet Green Sapphire Gem (ID: 496558)
0.38 ct (total 0.76ctw) Sapphire
4.2 mm
$ 41.56
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5 pcs
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0.3ct Round Facet Green Demantoid Garnet Gem (ID: 325502)
0.32 ct (total 1.59ctw) Demantoid Garnet
4 mm
$ 159.00
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4 pcs
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0.4ct Diamond-Cut Blue Zircon Gem (ID: 489783)
0.38 ct (total 1.53ctw) Zircon
4.1 mm
$ 18.36
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9 pcs
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0.3ct Round Facet Multicolor Andalusite Gem (ID: 221437)
0.27 ct (total 2.39ctw) Andalusite
4.1 mm
$ 107.55
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2 pcs
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0.4ct Round Facet Pink Sapphire Gem (ID: 496469)
0.37 ct (total 0.73ctw) Sapphire
4.1 mm
$ 39.92
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9 pcs
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0.3ct Round Facet Multicolor Andalusite Gem (ID: 224385)
0.25 ct (total 2.28ctw) Andalusite
4.1 mm
$ 102.60
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4 pcs
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0.3ct Diamond-Cut Green Tsavorite Garnet Gem (ID: 473641)
0.30 ct (total 1.19ctw) Tsavorite Garnet
4.1 mm
$ 174.31
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10 pcs
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0.4ct Round Facet Pink Rhodolite Garnet Gem (ID: 390714)
0.38 ct (total 3.75ctw) Rhodolite Garnet
4.1 mm
$ 182.85
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41 pcs
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0.3ct Round Facet Pink Sapphire Gem (ID: 503692)
1 pc (avg. 0.34 ct) Sapphire
4.1 mm
$ 18.48
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2 pcs
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0.4ct Round Facet Pink Sapphire Gem (ID: 496458)
0.37 ct (total 0.74ctw) Sapphire
4 mm
$ 40.47
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499 pcs
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0.3ct Round Facet White Topaz Gem (ID: 505488)
1 pc (avg. 0.32 ct) Topaz
4 mm
$ 1.59
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3 pcs
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0.4ct Round Facet Green to Pink Color-Change Diaspore Gem (ID: 475333)
0.35 ct (total 1.04ctw) Color-Change Diaspore
4.2 mm
$ 33.28
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4 pcs
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0.4ct Round Cabochon Golden Green Chrysoberyl Cat's Eye Gem (ID: 294770)
0.39 ct (total 1.55ctw) Chrysoberyl Cat's Eye
3.9 mm
$ 108.50
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1 pc
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0.4ct Round Facet Greenish Yellow Chrysoberyl Gem (ID: 496249)
0.36 ct Chrysoberyl
4.1 mm
$ 11.39
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18 pcs
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Click for Product Video (310832)
0.2ct Round Facet Multicolor Andalusite Gem (ID: 310832)
0.24 ct (total 4.23ctw) Andalusite
3.9 mm
$ 190.35
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5 pcs
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0.4ct Round Facet Golden Brown to Orange Color-Change Garnet Gem (ID: 346325)
0.41 ct (total 2.04ctw) Color-Change Garnet
4 mm
$ 183.60
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4 pcs
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0.4ct Diamond-Cut Blue Zircon Gem (ID: 484716)
0.37 ct (total 1.47ctw) Zircon
4 mm
$ 17.64
Item in Stock
Round Shape 4 mm Gems

Why Shop For 4 mm Calibrated Stones?

Some people buy gems by color or price, but for many, it is best to purchase gems by shape and size - especially if you're in need of a Gemstone to replace a previous item that was lost or damaged. Calibrated Round gemstones, Facet cut and Cabochon gems available now in 4 mm diameter size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

What are the Uses for 4mm Calibrated Stones?

GemSelect's 4mm round calibrated stones are excellent for  replacing lost or damaged gemstones and creating new pieces. 4mm Gemstones are excellent for earrings, necklaces, pendants, and numerous other jewelry applications. By using 4 mm stones in combination or purchasing our multicolored lots, they can be used to create stunning arrangements that can be quite substantial.

What colors are GemSelects 4 mm Stones?

Our 4 mm calibrated natural gemstones are available mainly in Blue and Green colors with; Zircon, Tanzanite, Sapphire, Apatite representing the Blues, and Peridot, Sapphire, Agate, and Garnets representing the Greens.

You will also find a large selection of Orange, Red, Pink, Yellow, and White Gems in this 4mm size!

How can I Buy them?

GemSelects 4mm gems sell by pairs and lots in both faceted and cabochon cuts. You can filter our inventory based on size, weight, color, shape, origin, and more.

GemSelect Welcomes Your Questions and Suggestions.

Please contact us if you have any questions, comments, or suggestions directly athelp@gemselect.com. Thank you for choosing GemSelect!!

Certified Customer Reviews
Overall Rating -> 8 star ratings
Finding the right gemstones was easy on the web page. Payment was quite simple as well. Design of the site was nice and simple; however, the "Create Your Gemstone Lots" image appears fuzzy and lowers aesthetics in my opinion.
Posted By Anon34 in December, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I have always had good luck with GemSelect. The stones are always as pictured. I would recommend GemSelect.
Posted By MiMi in December, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
The site had so many different stones and they were very affordably priced
Posted By Manimal in December, 2018
Source: Bizrate
Overall Rating -> 9 star ratings
Good stones and easy to use website
Posted By Wilsondesigns in December, 2018
Source: Bizrate
Overall Rating -> 9 star ratings
All is good
Posted By T in December, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
nice collection of jewels at a fair price
Posted By Bob in December, 2018
Source: Bizrate
Popular Gemstones
All Gemstones (144)
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart