 Vintage
Vintage filigree 
diamond engagement rings are simply too good an option to pass up if you can ever afford one.
The word “filigree” derives from “filigreen”, which in turn comes from “filum” meaning thread, as well as “granum” meaning 
grain or small 
bead. In jewelry these days, filigree refers to a delicate embellishment wherein fine and supple metal threads have been curled or twisted, before soldering them to the 
ring or necklace. The shapes filigree takes vary, and include lacy flourishes, 
scrollwork, symmetrical 
designs, and catchy motifs.
It is not just precious metals, which can be used to lay filigree on a jewelry piece,

 but anything that is pliable as well as pleasing in appearance. For instance, when making 
antique diamond jewelry with filigree, the jeweler stretches metal into fine threads, then bends, 
twists, wraps, and folds this into the shape he wants it to take.