Effy Sterling silver diamond earrings. Effy Sterling silver diamond earrings. Since 1979, EFFY has designed some of the world’s most distinctive jewellery. Obsessed with quality and a meticulous craftsman, designer Effy Hematian ensures every piece of EFFY jewellery is infused with his creative vision. All EFFY jewellery is covered by a limited manufacturer’s warranty (details available with purchased item). To inquire about a repair and/or sizing, please reach out to The Time Shop. Any service performed by anyone other than EFFY Jewelry and The Time Shop will immediately void the warranty.