While they might not be a brightly colored as other butterflies, the Charaxes Brutus is beautifully patterened, in my opinion! Just check out those striped and multi-colored patterns on the reverse side of this pendant/wing.
This butterfly is highly reversible, allowing this piece to be wearable on either side, depending on your mood for the day. 16" gunmetal chain with lobster clasp closure. Pendant measures about 1.5" in size.