Marcasite heart with red stones

Marcasite heart with ruby like stones. Heart is marked 925 which is Sterling Silver I can’t see a mark on the chain but can still be silver. The mark may have worn off. When making an offer please keep in mind that Poshmark takes 20%, I buy the ink, paper and tape to pack as well as the gas to the post office. In addition I almost always send extra gifts. J088