Diamond is a distinctive girls' name in United States, ranking #759 in 2011 with 363 recorded births. The name reached its all-time peak in 1999 with 2,160 births ranking #150. Since 1996, the popularity has decreased by 78.6%. In 2011, approximately 1 in every 4,845 girls born was named Diamond. FALLING Recent data shows the name is currently falling.