Diademas y Pasadores S.L. is a Spanish company founded in 1990, specializes in manufacturing and retail hair ornaments for women and girls, under the brand SIENA.

Siena offers its clients a large and updated catalog renewed every six months, seasons, Spring / Summer and Fall / Winter. In the catalogue you can find products of own design production accompanied by a selection of products of the most important international manufacturers. The purpose of this catalogue is to adapt price and quality, design or fashion to the different needs and each of its customers also attending the trends in each season.

SienaSiena is present in three international fairs: FIMI (Valencia) and BISUTEX (Madrid), and PITTI BIMBO (Firenze).