Vintage, joker, or child’s cross crystal necklace

Beautiful crystal cross necklace on a small silver chain. Beautiful old piec can be worn as a chicken on most or child's necklace, please refer to pictures for measurements. The back up more of one bead is got some yellowing but it's not really noticeable on the front, just beautiful!! This is from my sisters closet and she passed away November 19. Thank you for looking.