Chain length is another detail worth getting right. A 16-inch chain sits at the collarbone and is ideal for pendants...

Chain length is another detail worth getting right. A 16-inch chain sits at the collarbone and is ideal for pendants...

Chain length is another detail worth getting right. A 16-inch chain sits at the collarbone and is ideal for pendants...

Chain length is another detail worth getting right. A 16-inch chain sits at the collarbone and is ideal for pendants...

Chain length is another detail worth getting right. A 16-inch chain sits at the collarbone and is ideal for pendants...

Once you have a handle on the Four Cs, the next question is style. Diamond necklaces span an enormous range of desig...