Art Deco Drop Diamond Necklace chain is marked 18KT, Italy; pendant is marked 750 Analysis of Diamonds Diamonds in pendant: eight square .05ct, eleven rectangular baguette diamonds weighing between .02cts and .06cts, twenty eight round diamonds weighing between .02cts and .03cts, for a total diamond weight of approximately 1.5 carats. The quality of the stones is impressive. F color, VS1 consistent. measures approximately: Pendant: 1 1/2" long. Chain: 18" long (end to end).