Education The luxury of knowing what you are getting is a given at Z & Z. We are eager to share our knowledge and guide our customer’s with sound advice and recommendations. We are keen to educate all of our customer’s, whether they are shopping for a $50.- pair of cultured pearl studs or a large vivid yellow canary diamond, that costs $500,000.–. Life is full of mysteries but shopping for jewelry should not be one of them. Email us or call (212) 869-4465 for an appointment. Zwikker & Zacher Ltd.