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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (74): Marquise Shape 8x4 mm Gems Clear All
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ID: 3229185 pcs
2.43ctw Morganite
8.10mm x 4.09mm x 2.62mm
USD 48.11
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ID: 4299223 pcs
1.45ctw Sapphire
7.73mm x 3.84mm x 2.06mm
USD 35.41
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ID: 4066952 pcs
1.24ctw Rhodolite Garnet
8.05mm x 3.91mm x 2.39mm
USD 9.92
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ID: 3537485 pcs
2.10ctw Citrine
7.87mm x 3.97mm x 2.47mm
USD 14.70
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ID: 4068434 pcs
2.44ctw Rhodolite Garnet
7.99mm x 3.90mm x 2.46mm
USD 19.52
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ID: 3537314 pcs
1.92ctw Citrine
8.01mm x 4.14mm x 2.93mm
USD 13.44
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ID: 4087002 pcs
1.16ctw Iolite
7.87mm x 4.01mm x 3.42mm
USD 23.94
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ID: 3196314 pcs
2.09ctw Morganite
8.01mm x 4.10mm x 2.92mm
USD 41.38
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ID: 4305691 pcs
0.70ct Sapphire
7.90mm x 3.98mm x 2.90mm
USD 105.00
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ID: 3537634 pcs
2.00ctw Citrine
8.16mm x 4.05mm x 2.65mm
USD 14.00
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ID: 4330701 pcs
0.53ct Aquamarine
7.95mm x 4.08mm x 3.12mm
USD 15.90
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ID: 3230774 pcs
2.06ctw Morganite
7.83mm x 4.04mm x 2.80mm
USD 40.79
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ID: 3230864 pcs
2.06ctw Morganite
8.06mm x 4.08mm x 2.76mm
USD 40.79
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ID: 3196334 pcs
2.28ctw Morganite
7.96mm x 4.09mm x 2.97mm
USD 45.14
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ID: 3230844 pcs
2.16ctw Morganite
7.79mm x 4.02mm x 2.94mm
USD 42.77
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ID: 3230834 pcs
2.02ctw Morganite
8.07mm x 4.09mm x 2.76mm
USD 40.00
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ID: 4067824 pcs
2.13ctw Rhodolite Garnet
8.01mm x 3.87mm x 2.26mm
USD 17.04
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ID: 4068394 pcs
2.48ctw Rhodolite Garnet
7.99mm x 3.88mm x 2.51mm
USD 19.84
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ID: 4067884 pcs
2.10ctw Rhodolite Garnet
7.92mm x 3.88mm x 2.20mm
USD 16.80
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ID: 3230824 pcs
2.14ctw Morganite
8.03mm x 4.11mm x 2.86mm
USD 42.37
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ID: 4067844 pcs
2.06ctw Rhodolite Garnet
8.02mm x 3.92mm x 2.07mm
USD 16.48
Item in Stock
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Marquise Shape 8x4 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 marquise shaped facet cut gems, gemstone carvings and cabochons available in 8 mm x 4 mm sizes. For the largest selection of colored gemstones, Shop GemSelect Online.

As a general guideline, when it comes to calibrated gems, they are not usually expected to be cut to exact measurements and specifications. But rather, they're cut with slight variance in size, though the close approximatation in size is not clearly defined, there are general guidelines for what is considered acceptable. Obviously larger and heavy carat weight stones allow more room in size for variance, while smaller stones may leave little to none. This means a large 30mm calibrated gemstone, could actually be closer to 31 millimeters. For this reason, we recommend to always view the exact size in addition to the calibrated size details. The exact size will inform you of the variance you can expect. Some setting styles are more flexible with variance, such as prong settings, while other styles of mountings may need almost an exact size to the fraction of millimeter.

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 round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most 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