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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (328): Round Shape 4 mm Gems Clear All
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ID: 4523282 pcs
thumb image of 0.7ct Round Facet Green/Pink Color-Change Diaspore (ID: 452328)
0.67 ct Color-Change Diaspore
3.9 mm
$ 23.45
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ID: 3684207 pcs
thumb image of 2.3ct Diamond-Cut Orange Spessartite Garnet (ID: 368420)
2.26 ct Spessartite Garnet
3.9 mm
$ 62.26
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ID: 39071510 pcs
thumb image of 4ct Round Facet Raspberry Red Rhodolite Garnet (ID: 390715)
4.02 ct Rhodolite Garnet
4 mm
$ 196.02
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ID: 4545901 pcs
thumb image of 0.3ct Round Facet Green/Pink Color-Change Diaspore (ID: 454590)
0.26 ct Color-Change Diaspore
4 mm
$ 8.32
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ID: 26768010 pcs
thumb image of 3.9ct Round Cabochon Lively Green Peridot (ID: 267680)
3.88 ct Peridot
4.1 mm
$ 31.04
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ID: 2795999 pcs
thumb image of 2.1ct Round Facet Multicolor Andalusite (ID: 279599)
2.09 ct Andalusite
4.1 mm
$ 94.05
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ID: 4036064 pcs
thumb image of 1.1ct Diamond-Cut Golden Green Demantoid Garnet (ID: 403606)
1.13 ct Demantoid Garnet
3.9 mm
$ 74.09
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ID: 4384746 pcs
thumb image of 2ct Round Facet Pinkish Rose Rhodolite Garnet (ID: 438474)
1.97 ct Rhodolite Garnet
4 mm
$ 15.60
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ID: 38188220 pcs
thumb image of 4.4ct Diamond-Cut Multicolor Andalusite (ID: 381882)
4.43 ct Andalusite
3.9 mm
$ 177.60
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ID: 3909164 pcs
thumb image of 1.1ct Round Facet Multicolor Andalusite (ID: 390916)
1.11 ct Andalusite
4.1 mm
$ 54.32
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ID: 4546025 pcs
thumb image of 1.6ct Round Facet Green/Pink Color-Change Diaspore (ID: 454602)
1.56 ct Color-Change Diaspore
4.1 mm
$ 49.92
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ID: 4545084 pcs
thumb image of 1.5ct Round Facet Green/Pink Color-Change Diaspore (ID: 454508)
1.45 ct Color-Change Diaspore
4.1 mm
$ 46.40
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ID: 4524001 pcs
thumb image of 0.3ct Round Facet Green/Pink Color-Change Diaspore (ID: 452400)
0.27 ct Color-Change Diaspore
4 mm
$ 9.45
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ID: 39071410 pcs
thumb image of 3.8ct Round Facet Raspberry Red Rhodolite Garnet (ID: 390714)
3.75 ct Rhodolite Garnet
4.1 mm
$ 182.85
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ID: 2226889 pcs
thumb image of 2.3ct Round Facet Multicolor Andalusite (ID: 222688)
2.34 ct Andalusite
4.1 mm
$ 105.30
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ID: 3463255 pcs
thumb image of 2ct Round Facet Golden Brown to Orange Color-Change Garnet (ID: 346325)
2.04 ct Color-Change Garnet
4 mm
$ 183.60
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ID: 4223892 pcs
thumb image of 0.6ct Diamond-Cut Yellow Golden Sapphire (ID: 422389)
0.64 ct Sapphire
4 mm
$ 17.41
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ID: 2796049 pcs
thumb image of 2.2ct Round Facet Multicolor Andalusite (ID: 279604)
2.20 ct Andalusite
4 mm
$ 99.00
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ID: 2387319 pcs
thumb image of 2.2ct Round Facet Green Peach Andalusite (ID: 238731)
2.16 ct Andalusite
4.1 mm
$ 108.00
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ID: 4545044 pcs
thumb image of 1.4ct Round Facet Green/Pink Color-Change Diaspore (ID: 454504)
1.42 ct Color-Change Diaspore
4.1 mm
$ 45.44
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ID: 4545064 pcs
thumb image of 1.2ct Round Facet Green/Pink Color-Change Diaspore (ID: 454506)
1.21 ct Color-Change Diaspore
4.1 mm
$ 38.72
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Round Shape 4 mm Gems
Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated Round shapes, 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.

As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often around 0.3 mm or slightly higher even. This small variance can usually be accommodated for standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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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