Thanks for the information, so I guess it was ivory after all! We've certainly had a change in heart when it comes to deeming which materials are appropriate for us to use in luxury goods in recent years...even into the sixties and seventies Hermes would make bags out of ELEPHANT and WHALE skin and coats with real leopard fur were not uncommon! Yikes! Now snake skin (which is relatively unassuming) is banned for sale in the state of California...what along way we have come.This is what I found on the white bone cuff
"Iconic and extremely rare, this Elsa Peretti bone cuff designed for Tiffany & Co. was made from walrus ivory in the 1970's.
The name refers to the shape of the cuff, designed to be worn on the right wrist and to mimic the wrist bone. Very few were made in ivory but they were worn on the runway by Halston models. "