The simplest way to layer necklaces is to choose various designs in different lengths. Most choose to create layers of the same gold color, but mixing in rose gold with yellow or white gold is a look that continues to grow in popularity. 

Consider mixing different styles of necklaces for a bolder look. Pair a medallion with a solitaire necklace or tennis necklace, for example, or choose styles that highlight multiple diamond shapes.

Yes, you can layer gold and silver necklaces. Mixing metals can create a stylish and modern look, adding visual interest and versatility to your style. Try to balance the pieces for a look that’s striking yet sophisticated.

It's generally a good idea to select three to five necklaces varying in length for a balanced look. However, two necklaces can also create a stylish effect. Aim for contrast in shapes, colors, or textures to make your cascade visually interesting.