diamanté
Concise Oxford English Dictionary © 2008 Oxford University Press:
diamanté /dɪəˈmɒnteɪ/
▶adjective decorated with glass cut to resemble diamonds. ▶noun fabric or costume jewellery made or decorated with glass cut to resemble diamonds.
– origin early 20th cent.: Fr., lit. ‘set with diamonds’.
'diamanté' also found in these Oxford entries:

