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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (617): Round Shape 4 mm Gems Clear All
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9 pcs
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0.2ct Round Facet Multicolor Andalusite Gem (ID: 279894)
0.24 ct (total 2.16ctw) Andalusite
4 mm
$ 108.00
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18 pcs
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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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6 pcs
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0.3ct Round Cabochon Yellowish Green Chrysoberyl Cat's Eye Gem (ID: 301295)
0.34 ct (total 2.03ctw) Chrysoberyl Cat's Eye
4.1 mm
$ 131.95
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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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12 pcs
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0.2ct Round Facet Multicolor Andalusite Gem (ID: 312902)
0.24 ct (total 2.84ctw) Andalusite
4.1 mm
$ 127.80
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10 pcs
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0.2ct Round Cabochon Green Agate Gem (ID: 495633)
0.23 ct (total 2.34ctw) Agate
4 mm
$ 4.45
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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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5 pcs
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0.5ct Round Cabochon Golden Green Chrysoberyl Cat's Eye Gem (ID: 294837)
0.45 ct (total 2.24ctw) Chrysoberyl Cat's Eye
4.1 mm
$ 156.80
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20 pcs
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0.2ct Diamond-Cut Multicolor Andalusite Gem (ID: 381950)
0.22 ct (total 4.41ctw) Andalusite
3.9 mm
$ 176.80
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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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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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6 pcs
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0.2ct Round Facet Multicolor Andalusite Gem (ID: 314963)
0.22 ct (total 1.33ctw) Andalusite
3.9 mm
$ 66.50
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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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9 pcs
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0.3ct Round Facet Multicolor Andalusite Gem (ID: 206611)
0.26 ct (total 2.37ctw) Andalusite
4.1 mm
$ 106.65
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5 pcs
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0.3ct Round Facet Multicolor Andalusite Gem (ID: 390844)
0.29 ct (total 1.45ctw) Andalusite
4.1 mm
$ 70.96
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4 pcs
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0.4ct Round Facet Raspberry Red Rhodolite Garnet Gem (ID: 415128)
0.40 ct (total 1.59ctw) Rhodolite Garnet
4.1 mm
$ 31.80
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8 pcs
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0.3ct Round Facet Raspberry Red Rhodolite Garnet Gem (ID: 390644)
0.34 ct (total 2.75ctw) Rhodolite Garnet
4.1 mm
$ 134.09
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6 pcs
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0.3ct Round Cabochon Green Agate Gem (ID: 495555)
0.32 ct (total 1.93ctw) Agate
4 mm
$ 3.67
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5 pcs
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0.3ct Round Facet Multicolor Andalusite Gem (ID: 390853)
0.30 ct (total 1.49ctw) Andalusite
4.1 mm
$ 72.92
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20 pcs
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0.2ct Diamond-Cut Multicolor Andalusite Gem (ID: 381952)
0.20 ct (total 3.99ctw) Andalusite
3.9 mm
$ 159.96
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5 pcs
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0.3ct Round Facet Multicolor Andalusite Gem (ID: 390838)
0.31 ct (total 1.55ctw) Andalusite
4.1 mm
$ 75.86
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 -> 9 star ratings
My selection was made quickly and efficiently.
Posted By JimC in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
GemSelect has a great selection at reasonable prices. Gemstones are always as beautiful as pictured.
Posted By GemLover in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Colors and qualities of gems are very well represented online. Easy to use website. Great selections!
Posted By in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
This was my second purchase from GemSelect and definitely won’t be my last! They have a very wide variety of gems and you can always find what you are looking for with ease and the prices are very good.
Posted By Jill in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Loved the wide selection of product
Posted By Miki in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
finally bought the last rock to complete my ring idea; needed another white one after giving the big diamond to my daughter. a diamond that size is out of my retired-school-teacher budget, so i bought a white zircon. went back to the same place that i got my loose sapphire-- great selection, good prices, good delivery!
Posted By Ptcmom in November, 2018
Source: Bizrate
Popular Gemstones
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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