Calibrated Heart Shape Gemstones 12 x 12 mm size from GemSelect

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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was just windowshopping and spotted a couple "Very Uncommons", a tsavorite & a demantoid garnet that were both in a size I was looking for, & that I could very easily pay for -- so figured I would grab the tsavo ASAP and got the demantoid to accompany so they wouldn't be lonely.

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Gemstones A-Z

Buy Heart Shape 12x12 mm Gems

0.78 ct Loose Baguette Cut Smoky Quartz, 6.3 x 5.3 mm From Brazil

1.35 ct Loose Trillion Cut Mystic Quartz, 6.1 x 6 mm From Brazil

36.45 carat Bi-color Ametrine, Oval Portuguese-Cut loose Ametrine from Brazil, Natural Untreated Gem, 26 x 18.4 mm

4.73 ct Oval Chrysoprase, 12.3 x 9.7 mm From Madagascar

17.24 ct Yellow Quartz, 17.3 mm Round Cut From Brazil

2.02 ct Octagon Cut Peridot, 5.9 x 4 mm From China

4.83 ct Yellow Apatite, 12 x 10.3 mm Oval Cut From Madagascar

11.67 ct Oval Cut Smoky Quartz, 17.2 x 13.2 mm From Brazil

0.41 ct Loose Yellow Sapphire, 6.1 x 4.2 mm Oval Cut From Tanzania

5.62 ct Oval Prehnite, 9.4 x 7 mm From South Africa

35.04 ct Cushion Obsidian, 28.8 x 23.4 mm From Mexico

0.87 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 5.2 x 5.1 mm

11.61 ct Round Cut Color-Change Fluorite, 14.1 mm From Brazil

39.4 ct Oval Tiger's Eye Matrix, 34.8 x 19.7 mm From Mexico

3.86 carat Black Star Sapphire, Pear loose Star Sapphire from Thailand, Natural Gem, 9.6 x 7.7 mm

85.14 carat Pear Moss Agate, loose Certified Moss Agate from India, Natural Untreated Gem, 53.6 x 38.1 mm

0.46 ct Loose Yellow Sapphire, 6.1 x 4 mm Oval Cut From Tanzania

1.12 ct Loose Oval Cut Black Opal, 8.9 x 6.9 mm From Ethiopia

27.38 ct Loose Green Amazonite, 32.5 x 10.6 mm Pencil Cut From Madagascar

5.2 carat Swiss Blue Topaz, Trillion-Cut loose Topaz from Brazil, Natural Gems, 7.1 x 7 mm

3.54 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 11.8 x 6.1 mm

0.74 ct Loose Orange Sapphire, 6 x 4.1 mm Oval Cut From Tanzania

41.05 carat Green Amazonite, Pear loose Amazonite from Madagascar, Natural Untreated Gem, 38 x 24.3 mm

1.7 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5.2 mm

3.81 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 12.1 x 6 mm

8.32 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gems, 13.9 x 8.2 mm

2.82 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gems, 7.2 x 5.3 mm

9.97 ct Loose Oval Agate, 12.7 x 12.4 mm From Indonesia

12.97 ct Heart Jasper, 19.8 x 12.1 mm From Indonesia

2.64 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8.9 mm

6.72 carat Sky Blue Topaz, Round loose Topaz from Brazil, Natural Gems, 9.3 mm

66.56 ct Multicolor Jasper, 32.9 x 27.7 mm Oval Cut From Indonesia

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