Well known and sought after Sarah Coventry Blue Lagoon brooch pin. This quality made pin was manufactured by DeLizza & Elster. It features blue aurora borealis prongset navette rhinestones with dark and light sapphire chaton rhinestones. Brilliant silvertone metal. It measures 2 3/4" x 1 3/4". Pristine unworn condition.
 
This particular piece was first sold in 1963 then in 1969 it was given as a hostess gift only.