Large Black Driftwood Carved Cross Pendant Necklace

This is a unique large light driftwood carved cross pendant. I believe it is a Victorian mourning cross. And it feels like it is driftwood to me. I would date it to late 1800s or early 1900s. (If in fact it is a Victoria mounting cross pendant). Chain is not original to the cross. If you have any questions. Condition is very good. Let me know . Or if you have any info on this piece. Measurements are in the photo section. Thank you.