Purple fluorite multi stone sterling silver pendant with 20 inch chain

This pendant necklace is from an estate purchase , in excellent condition, showing little to no signs of use.  Main larger stone seems to be a treated fluorite. Middle stone tests as amethyst. Small accent stones might be fluorite also. Or maybe something completely different like spinel , or zircon but none whatsoever are glass or CZ. Prong set in authentic 925 sterling silver. STS on back of pendant for Chuck Clemency. Chain is also sterling silver measuring 20 inches. Reasonable offers considered