Sigma Pi fraternity inspired lavaliere made exclusively by The Collegiate Standard. With 18 with sterling silver snake chain. Made from 925 Sterling Silver with Rhodium Finishing. The perfect gift for Initiation, Graduation or the Holidays! A classic 925 sterling silver Sigma Pi inspired lavaliere made exclusively by The Collegiate Standard. This is the perfect gift for any Sigma Pi member or sweetheart! Snake chains are available with purchase for an additional $9. Available chain sizes are in the drop down menu (16" / 18" 20").