GASSAN Schiphol opened its first Diamond shop at Amsterdam Airport Schiphol in 1967. At present, GASSAN operates 14 shops. GA ... SSAN stands for diamonds, jewelry and luxury watches. For over 75 years the brand represents fair trade, proven quality, trustworthiness and service. Today we offer more than 80 major watches and jewelry brands at Schiphol. There is a wide choice of diamond jewelry and loose diamonds which can be placed in any setting of your choice by our in-house goldsmith. GASSAN Schiphol is a family owned business. read more