Genuine Marcasite, Fine Silver Plated, Purple & Black, Oval Pendant Necklace Nwt

Very pretty and sparkling purple marcasite necklace. New on card! Pendant is oval, purple druzy, framed in black and silver. Measures 1.5” long total, including the bail. 925 silver plated. Has a stamp on back but not sure what it reads. Silver chain included. Unsure of length (don’t want to take it off the card) but my guess is 18”. Made in Thailand. From a non-smoking home.