Rolex 1601 Obsidian Datejust Watch
This vintage timepiece dates back to the early 1970s and features a rare Obsidian dial that's made from thinly sliced volcanic glass. Housed in an 18 karat yellow gold case, the Obsidian dial on this Rolex 1601 Datejust gets its unique appearance from the process of glue and dye drying behind the stone.