Edelsteinschleifer in Lederhosen
Azubi in Lederhosen. Man beachte die fachmännische Untersuchung mit der Lupe.

Und so schreibt das Fremdenverkehrsamt von Südborneo im Jahre 2004:

Martapura is a finishing centre for diamonds and precious stones, and is also the centre of diamond marketing. The polishing work uses traditional as well as modern equipment. The diamonds and other jewellery are marketed at Martapura Plaza. Stone-craft of various origins and forms are easily found in the markets of Martapura. The price of jewellery ranges from as little as Rp.500, up to millions of rupiahs.
Youtube: Javanisches Tagebuch 1958-1962