Sterling Silver Envelope Locket Pendant. Signed, sealed, and delivered! Delight someone you love with this petite envelope pendant and create a love letter in sterling silver . This envelope really opens along a hinge at the top edge and closes with a little button latch at the center. Dot detailing along envelope flap is super sweet. Be sure to pick up the silver sheet you can stamp or engrave with sweet nothings, and slip right into this envelope.