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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (15): Heart Shape 12x12 mm Gems Clear All
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ID: 2740682 pcs
thumb image of 13.4ct Heart Cabochon Lavender Blue Chalcedony (ID: 274068)
13.37 ct Chalcedony
12.2 x 12.1 mm
$ 50.81
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ID: 3790311 pcs
thumb image of 5.7ct Heart Facet Lively Green Peridot (ID: 379031)
5.72 ct Peridot
12.1 x 11.9 mm
$ 366.08
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ID: 2740862 pcs
thumb image of 13.5ct Heart Cabochon Lavender Blue Chalcedony (ID: 274086)
13.52 ct Chalcedony
12.1 x 12 mm
$ 51.38
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ID: 2740712 pcs
thumb image of 13.7ct Heart Cabochon Lavender Blue Chalcedony (ID: 274071)
13.65 ct Chalcedony
12.2 x 12.1 mm
$ 51.87
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ID: 3067241 pcs
thumb image of 8.3ct Heart Cabochon Multicolor Green Malachite (ID: 306724)
8.34 ct Malachite
12.1 x 12.1 mm
$ 10.84
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ID: 4627681 pcs
thumb image of 7.4ct Heart Facet White Topaz (ID: 462768)
7.44 ct Topaz
12.1 x 12.1 mm
$ 37.20
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ID: 3283142 pcs
thumb image of 14.7ct Heart Rose-Cut Black Spinel (ID: 328314)
14.66 ct Spinel
11.8 x 12 mm
$ 79.99
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ID: 3282442 pcs
thumb image of 13ct Heart Rose-Cut Black Spinel (ID: 328244)
12.97 ct Spinel
12.1 x 11.9 mm
$ 64.85
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ID: 3282382 pcs
thumb image of 13ct Heart Rose-Cut Black Spinel (ID: 328238)
13.02 ct Spinel
12.1 x 11.9 mm
$ 65.10
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ID: 3283182 pcs
thumb image of 14.2ct Heart Rose-Cut Black Spinel (ID: 328318)
14.22 ct Spinel
12.1 x 11.8 mm
$ 71.10
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ID: 3283082 pcs
thumb image of 13.9ct Heart Rose-Cut Black Spinel (ID: 328308)
13.93 ct Spinel
12.1 x 11.9 mm
$ 69.65
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ID: 4171331 pcs
thumb image of 6.8ct Heart Checkerboard (double sided) Lemon Quartz (ID: 417133)
6.79 ct Quartz
12.2 x 12.2 mm
$ 20.37
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ID: 3282412 pcs
thumb image of 14.4ct Heart Rose-Cut Black Spinel (ID: 328241)
14.36 ct Spinel
12.1 x 11.9 mm
$ 71.80
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ID: 3282402 pcs
thumb image of 14.5ct Heart Rose-Cut Black Spinel (ID: 328240)
14.51 ct Spinel
12.1 x 11.8 mm
$ 72.55
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ID: 3283122 pcs
thumb image of 14ct Heart Rose-Cut Black Spinel (ID: 328312)
13.95 ct Spinel
12.1 x 11.9 mm
$ 69.75
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Heart Shape 12x12 mm Gems
Some people by gems by color or price, but for many, it may be better to buy gems by size - especially if you're in need to a gem to replace another previous item that was lost or damaged: Calibrated heart shaped facet cut gems and cabochon gems in 12 x 12 mm size. Buy a wide range of calibrated gemstones by size at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not meant nor 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