Diamond is a moderately popular girls' name in United States, ranking #301 in 2005 with 1,057 recorded births. The name reached its all-time peak in 1999 with 2,160 births ranking #150. Since 1996, the popularity has decreased by 37.7%. In 2005, approximately 1 in every 1,748 girls born was named Diamond. FALLING Recent data shows the name is currently falling.