Sterling Silver/Rhinestone Heart Pendant Necklace

Rhinestone heart pendant on 20" sterling silver 1mm box chain, platinum plated to prevent tarnishing. Pendant may not be silver, but it had what appeared to be tarnish and I was able to shine it up. There is no stamp on pendant. Pictures and even video do not reflect the sparkle of this necklace. Very pretty in person. Pendant approximately 5/8" square. EUC. (0711)