About this 3D model
Made with Fluid Designer for 3D Printing (Blender) @ www.fluiddesigner.co.uk I printed it on an Anet A8 and to do so you will need to add a cube (see image) at the bottom of the heart, with the cube being the point of attachment to the build plate. Clearly, it would printe better on an SLS printer and you can in fact find this and other similar items @ https://www.shapeways.com/shops/fluiddesigner?section=Jewelry+-+Earrings&s=0