Arrowhead Black Grayish Grooved Serrated Edges Pendant Native American Indian

Rare, Amazing arrowhead with interesting hand carved decorative grooves on the service. Smooth and dark grayish oil black. My family past this on to me. It is old but I don't know the age. The Arrowhead has sharp serrated edges.

Fitted for a necklace with hand wrapped wire as a Pendant. The metal decorative rope necklace closure is broken and needs repair. You can also remove it and use another type of necklace to your taste. Don't know too much about the history of where it came from. Native American Indian is my best guess.

I'm not an expert but this looks like Obsidian. It has a glassy appearance and has very sharp serrated edges. This was given to me after a family member passed. He was a collector of Native American Indian jewelry.