14KT White Gold Diamond 0.78CTW and South Sea Pearl Drop Necklace - JOSEPH MUSTO, Jewelry Designer As a designer and manufacturer of fine fashion jewelry, Joseph Musto has developed an entire line of classic and contemporary jewelry. His Great Neck location is open Tuesday thru Saturday 10 AM to 5 PM and Thursday evening by appointment. Being in the jewelry industry for 18 years, Mr. Musto's knowledge from both his gemological training and his "hands-on" experience has enabled him to establish an extensive inventory to offer both his local and out of town clients the finest in quality at the most affordable prices. Joseph has open accounts with most major watch companies from Movado to Breitling. All his designs begin with the use of an expert model maker who takes his ideas and makes them a reality.