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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (62): Marquise Shape 8x4 mm Gems Clear All
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ID: 4086922 pcs
1.19ctw Iolite
8.05 x 4.08 x 3.52mm
USD 24.56
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ID: 3537224 pcs
1.97ctw Citrine
7.88 x 4.08 x 2.81mm
USD 13.79
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ID: 3230284 pcs
2.06ctw Morganite
7.79 x 4.01 x 2.73mm
USD 40.79
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ID: 3230774 pcs
2.06ctw Morganite
7.83 x 4.04 x 2.80mm
USD 40.79
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ID: 3229084 pcs
2.13ctw Morganite
8.06 x 4.13 x 2.91mm
USD 42.17
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ID: 4305691 pcs
0.70ct Sapphire
7.90 x 3.98 x 2.90mm
USD 105.00
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ID: 3230324 pcs
1.75ctw Morganite
7.94 x 3.93 x 2.39mm
USD 34.65
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ID: 4089325 pcs
2.27ctw Iolite
7.93 x 3.98 x 3.18mm
USD 46.85
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ID: 3230824 pcs
2.14ctw Morganite
8.03 x 4.11 x 2.86mm
USD 42.37
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ID: 3230374 pcs
2.21ctw Morganite
7.88 x 4.09 x 2.94mm
USD 43.76
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ID: 3230834 pcs
2.02ctw Morganite
8.07 x 4.09 x 2.76mm
USD 40.00
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ID: 4129362 pcs
1.35ctw Rhodolite Garnet
7.94 x 4.07 x 2.64mm
USD 27.00
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ID: 3230844 pcs
2.16ctw Morganite
7.79 x 4.02 x 2.94mm
USD 42.77
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ID: 4087694 pcs
1.61ctw Iolite
7.81 x 3.94 x 2.39mm
USD 33.23
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ID: 3537314 pcs
1.92ctw Citrine
8.01 x 4.14 x 2.93mm
USD 13.44
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ID: 3230864 pcs
2.06ctw Morganite
8.06 x 4.08 x 2.76mm
USD 40.79
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ID: 4108634 pcs
1.91ctw Iolite
7.82 x 3.90 x 3.13mm
USD 39.35
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ID: 4066192 pcs
1.31ctw Rhodolite Garnet
7.96 x 3.98 x 2.54mm
USD 10.48
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ID: 4105112 pcs
1.15ctw Iolite
7.93 x 4.08 x 3.40mm
USD 23.69
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ID: 3537656 pcs
2.56ctw Citrine
8.13 x 4.11 x 2.49mm
USD 17.92
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ID: 3537634 pcs
2.00ctw Citrine
8.16 x 4.05 x 2.65mm
USD 14.00
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