Genuine Natural 1/2 Ct cttw diamond heart necklace pendant new NWT vintage

Brand new with tags Total carat weight of 1/2 genuine natural diamonds in a rhodium plated 18” necklace. This came from Macys or Sears many years ago. It still has the tag. It has not been worn. It has been sitting in my jewelry box for a long time and needs a new home. This is from my personal collection and is 100% authentic