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Buy Heart Shape 12x12 mm Gems

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (33): Heart Shape 12x12 mm Gems Clear All
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Lavender Blue Chalcedony Gem - 6.7ct Heart Cabochon (ID: 274068)

Heart Blue Chalcedony

6.69 ct (total 13.37ctw)
12.2 x 12.1 mm
$ 50.81
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2 pcs
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Black Spinel Gem - 7.1ct Heart Rose-Cut (ID: 328237)

Heart Black Spinel

7.13 ct (total 14.26ctw)
12.1 x 11.8 mm
$ 71.30
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1 pc
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Lively Green Peridot Gem - 5.7ct Heart Facet (ID: 379031)

Heart Green Peridot

5.7ct
12.1 x 11.9 mm
$ 366.08
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2 pcs
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Lavender Blue Chalcedony Gem - 6.8ct Heart Cabochon (ID: 274086)

Heart Blue Chalcedony

6.76 ct (total 13.52ctw)
12.1 x 12 mm
$ 51.38
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Black Spinel Gem - 7.1ct Heart Rose-Cut (ID: 328318)

Heart Black Spinel

7.11 ct (total 14.22ctw)
12.1 x 11.8 mm
$ 71.10
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Black Spinel Gem - 6.6ct Heart Rose-Cut (ID: 328239)

Heart Black Spinel

6.56 ct (total 13.12ctw)
12.1 x 11.7 mm
$ 65.60
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Lavender Blue Chalcedony Gem - 6.5ct Heart Cabochon (ID: 324254)

Heart Blue Chalcedony

6.5ct
12.3 x 11.8 mm
$ 16.15
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Lavender Blue Chalcedony Gem - 6.6ct Heart Cabochon (ID: 274070)

Heart Blue Chalcedony

6.64 ct (total 13.27ctw)
12.2 x 12.1 mm
$ 50.43
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Black Spinel Gem - 7ct Heart Rose-Cut (ID: 328245)

Heart Black Spinel

7.02 ct (total 14.04ctw)
12.1 x 11.8 mm
$ 70.20
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Black Spinel Gem - 6.7ct Heart Rose-Cut (ID: 328236)

Heart Black Spinel

6.73 ct (total 13.46ctw)
12.1 x 11.8 mm
$ 67.30
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Black Spinel Gem - 6.7ct Heart Rose-Cut (ID: 328309)

Heart Black Spinel

6.74 ct (total 13.48ctw)
12.1 x 11.8 mm
$ 67.40
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Black Spinel Gem - 6.5ct Heart Rose-Cut (ID: 328238)

Heart Black Spinel

6.51 ct (total 13.02ctw)
12.1 x 11.9 mm
$ 65.10
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Multicolor Green Malachite Gem - 8.3ct Heart Cabochon (ID: 306724)

Heart Green Malachite

8.3ct
12.1 x 12.1 mm
$ 10.84
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2 pcs
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Black Spinel Gem - 7.2ct Heart Rose-Cut (ID: 328242)

Heart Black Spinel

7.19 ct (total 14.37ctw)
12 x 11.6 mm
$ 71.85
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2 pcs
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Black Spinel Gem - 6.9ct Heart Rose-Cut (ID: 328356)

Heart Black Spinel

6.93 ct (total 13.85ctw)
12.1 x 11.8 mm
$ 69.25
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Black Spinel Gem - 7ct Heart Rose-Cut (ID: 328246)

Heart Black Spinel

6.97 ct (total 13.94ctw)
12 x 11.7 mm
$ 69.70
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Lemon Quartz Gem - 7ct Heart Checkerboard (double sided) (ID: 417131)

Heart Yellow Quartz

7ct
12.5 x 12.2 mm
$ 21.09
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Black Spinel Gem - 7ct Heart Rose-Cut (ID: 328247)

Heart Black Spinel

6.97 ct (total 13.94ctw)
12.1 x 11.6 mm
$ 69.70
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2 pcs
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Black Spinel Gem - 7.3ct Heart Rose-Cut (ID: 328314)

Heart Black Spinel

7.33 ct (total 14.66ctw)
11.8 x 12 mm
$ 79.99
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2 pcs
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Black Spinel Gem - 6.8ct Heart Rose-Cut (ID: 328316)

Heart Black Spinel

6.78 ct (total 13.56ctw)
12.1 x 11.7 mm
$ 67.80
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2 pcs
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Black Spinel Gem - 7ct Heart Rose-Cut (ID: 328311)

Heart Black Spinel

6.97 ct (total 13.94ctw)
12.1 x 11.7 mm
$ 69.70
Item in Stock
1 2
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.

Certified Customer Reviews
Overall Rating -> 10 star ratings
man their gems are pretty good, and the prices aren't to bad either, I like checking out hte gems on there website, beceause the pictures of the gems are taken pretty well, and you can see the table, and the facets.
Posted By Spinach in March, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I love gemselect and I have bought a fair amount from them. The only complaint I have is not being able to save gems. I have a lot of projects so i am in the market for a lot of different gems and it's so disappointing to have to delete them all just to purchase one or two that I have saved in my cart.
Posted By S.Hicks in March, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I always check this site because they have unique options.
Posted By Lisa in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Great website to navigate. Awesome Gem selection! Nice photos and discriptions for all of the gems for sale. You can find gems in all price ranges. Checkout was a breeze.
Posted By Timmy in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
They had an extensive gemstone selection in all different cuts, sizes, and colors. They also had very good and workable prices. All of these aspects pulled me in as a customer.
Posted By Josh in February, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
It all depend on the product I will receive and have it verified by my in law jewellers.
Posted By Vodka in February, 2019
Source: Bizrate
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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