The attached photo is a black or purple pearl: 4 mm .450 ct. wgt. near Round, Lightly Blemished and an unprofessional opinion is it is of good quality.
With that said and my research I deem it to be worth very little.
Hi, Bert. Have you ever been on the gemologyonline.com site? They have a forum where the experts on this sort of thing hang out. They also have forums for faceting.