Dichroic glass is especially suited to earrings, as it catches the light just at sides of the face. I love the look of dichroic glass mixed with Swarovski crystals in an earring design, so some of my bezel-type pairs feature the crystal beads as dangles.
Semi-precious stone beads and freshwater pearls create a feeling of elegance that can't be matched with lesser materials.
Ear wires or studs are sterling silver or silver-plated.