Hi dear friends and customers this is very unique design you can use this design in locket and earing its weight is 4gram in 22ky goldits length is 31 mm and width is 22.3 This file is available in 3dm,stl and obj format for rapid prototyping. All our 3D files/models are in the 3dm format(but unioned) which means you can edit, change and redesign on your own in rhino or Matrix. All our files are ready to print on any 3D printing or wax milling machine.