Sterling Silver Marcasite Pendant Jewelry. If you love Sterling Silver Marcasite Jewelry you will love the large selection of Marcasite items we have to choose from. We have over 160 Marcasite items that would make a perfect gift for that special Marcasite lover. You are sure to find some beautiful Marcasite Jewelry to go with your favorite outfit! Some common misspellings of Marcasite: Markasite, Marckasite, Marcisite, Markisite.