90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
Home Calibrated Gemstones Heart Shape 12x12 mm Gems

Calibrated Heart Shape Gemstones 12 x 12 mm size | GemSelect

Heart Shape 12x12 mm Gems Weight
Heart Shape 12x12 mm Gems Size
Heart Shape 12x12 mm Gems Clarity
Heart Shape 12x12 mm Gems Price

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black Heart Shape 12x12 mm Gems
Blue
Brown
Golden
Gray
Green
Multicolor
Orange
Pink
Purple
Red
Turquoise
Violet Heart Shape 12x12 mm Gems
White
Yellow
Single
Pairs
Lots
Faceted
Cabochons
Clear All

13.46ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 73.74

View Gem

12.97ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 71.06

View Gem

13.56ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 74.29

View Gem

13.98ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.58

View Gem

13.48ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 73.85

View Gem

14.51ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 72.26

View Gem

14.00ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.69

View Gem

6.90ct Violet Amethyst, Heart, Transparent

12 x 12 mm (calibrated)

$ 34.36

View Gem

6.46ct Violet Chalcedony, Heart, Transparent/Translucent

12 x 12 mm (calibrated)

$ 17.70

View Gem

14.59ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 79.93

View Gem

14.00ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.69

View Gem

14.66ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 87.64

View Gem

13.27ctw Violet Chalcedony, Heart, Translucent

12 x 12 mm (calibrated)

$ 22.19

View Gem

13.94ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.36

View Gem

13.12ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 71.87

View Gem

14.37ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 78.73

View Gem

14.04ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.91

View Gem

13.93ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.31

View Gem

13.02ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 64.84

View Gem

5.23ct Violet Amethyst, Heart, Transparent

12 x 12 mm (calibrated)

$ 26.05

View Gem

13.85ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 75.88

View Gem

13.94ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.36

View Gem

13.95ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 76.43

View Gem

13.93ctw Black Spinel, Heart, Opaque

12 x 12 mm (calibrated)

$ 69.37

View Gem
1 2
Choose Page
1 - 2

Why Buy Heart Shape 12x12 Mm Gems from GemSelect?

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Filters need to be improved but rest of website is great

Posted By Rock hound in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use website

Posted By Mel in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

Posted By Bry_guy in March, 2026
Source: Bizrate
Enlarged Gemstone Image