This is a hand-made 20 inch cultured freshwater black pearl and genuine hematite bead necklace.  It is strung on 24 gauge silver tone jewelry wire with a silver tone box clasp attached to silver tone spring-style jump rings. 
The nature of these cultured pearls gives them each a unique appearance.  They are mostly round, however some are also potato shaped.  A few also have blister-pearls attached to the main pearl.


The Black Pearls are around 8mm each.  The beads in between the pearls are faceted 4mm Genuine Hematite, and at the ends of the necklace, 4mm round Genuine Hematite beads.

I purchased these pearls from an overseas vendor.  While they are genuine freshwater pearls, they are cultured, which means a nucleus was intentionally introduced in order for a pearl to grow naturally around the core, and they may have been dyed.