X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

Buy Heart Shape 12x12 mm Gems

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
  • Actual Product Photos
  • Reliable Quality
  • Full Transparency
  • Large Selection
  • Affordable Prices
  • Fast, Secure Global Shipping
ID: 328244
Weight: 12.97ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 85.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 328236
Weight: 13.46ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 88.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 328316
Weight: 13.56ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 89.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 328311
Weight: 13.94ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 92.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 324254
Weight: 6.46ct
Size: 12 x 12 mm (calibrated)
Clarity: Transparent/Translucent
Content: 1 pc
Price: $ 21.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 676050
Weight: 5.23ct
Size: 12 x 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 31.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 328317
Weight: 14.59ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 96.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 328309
Weight: 13.48ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 88.97
Item in Stock
More Options & Item Details
Add to Cart
ID: 328313
Weight: 14.00ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 92.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 328240
Weight: 14.51ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 87.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 328245
Weight: 14.04ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 92.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 328238
Weight: 13.02ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 78.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 328356
Weight: 13.85ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 91.42
Item in Stock
More Options & Item Details
Add to Cart
ID: 328310
Weight: 14.00ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 92.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 328246
Weight: 13.94ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 92.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 328242
Weight: 14.37ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 94.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 328308
Weight: 13.93ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 83.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 274068
Weight: 13.37ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 32.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 676051
Weight: 6.90ct
Size: 12 x 12 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 41.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 328318
Weight: 14.22ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 93.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 328314
Weight: 14.66ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 105.59
Item in Stock
More Options & Item Details
Add to Cart
ID: 328315
Weight: 13.93ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 91.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 274070
Weight: 13.27ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 26.74
Item in Stock
More Options & Item Details
Add to Cart
ID: 328312
Weight: 13.95ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 92.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 328243
Weight: 13.98ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 92.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 328239
Weight: 13.12ct (total)
Size: 12 x 12 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 86.59
Item in Stock
More Options & Item Details
Add to Cart

GemSelect Certified Store Reviews

GemSelect: Over 18 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Great site always looking for great deals and find them on this site

Posted By IRO5812 in July, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

I love wide range of stones. Always have my preference.

Posted By Ray in April, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use

Posted By DrD in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This was a great time as always. The only problem I had was deciding between all the beautiful and affordable stones that met my requirements. I love shopping for sapphires!

Posted By Phoenix in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.

Posted By Razormane in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

nothing but good. always have a great selection. I am a hobbyist and only collect. Great prices. I could take all day looking at a small percent of all the gemstone, fantastic

Posted By Steve m. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Ive been looking for a place to buy loose gemstones for years and was thrilled when I found this site

Posted By Bern in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I like the way your website shows us what stone were buying as well the easy way to navigate the site. also knowing the stones are real...

Posted By RED in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Everything went well, the payment options are easily declined but, but once sorted out, everything is smooth. I have bought from GemSelect before and am consistently satisfied with them.

Posted By Gabe in August, 2024
Source: Bizrate

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.

Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Great site always looking for great deals and find them on this site

Posted By IRO5812 in July, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

I love wide range of stones. Always have my preference.

Posted By Ray in April, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use

Posted By DrD in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This was a great time as always. The only problem I had was deciding between all the beautiful and affordable stones that met my requirements. I love shopping for sapphires!

Posted By Phoenix in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.

Posted By Razormane in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

nothing but good. always have a great selection. I am a hobbyist and only collect. Great prices. I could take all day looking at a small percent of all the gemstone, fantastic

Posted By Steve m. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Ive been looking for a place to buy loose gemstones for years and was thrilled when I found this site

Posted By Bern in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I like the way your website shows us what stone were buying as well the easy way to navigate the site. also knowing the stones are real...

Posted By RED in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Everything went well, the payment options are easily declined but, but once sorted out, everything is smooth. I have bought from GemSelect before and am consistently satisfied with them.

Posted By Gabe in August, 2024
Source: Bizrate
Enlarged Gemstone Image