Grunbman (Grunbmann) Gustav Grigoryevich — jeweller, metalworker.

Born in Riga.

From 1964 to 1965, Gustav Grunbman worked as a printing apprentice in a printing house. From 1965 to 1966, he was an apprentice mechanic at Printing House No. 3 and was awarded the 2nd qualification grade as a mechanic. Between 1967 and 1968, he worked as an instrument fitter for the Riga District Heating Directorate.

From 1968 to 1969, he worked as a decorative painter at the Riga Musical Instrument Factory. In 1969, he joined the Riga Jewellery Factory, starting as a jeweller's apprentice and soon receiving the 1st qualification grade.

In 1972, he was promoted to 3rd grade jeweller. In 1974, he was transferred to the main design department (OGK) as a 6th grade jeweller. From 1976, he worked as a designer-jeweller in the Artistic and Industrial Complex (BHK).

He was dismissed in 1991 due to the reorganisation of the enterprise.