Graduated from Riga Art school. Ya Rozentals (1986) and Department of painting (class of I. Zarins), the Latvian Academy of arts (1995, supervisor of the thesis – A. Naumov).
Since 1995 he is a member of the Association of Young Artists, and since 1998 – member of the artists Union.
In exhibitions he participated since 1989. His work is exhibited in about 60 exhibitions in Riga, Cesis, Salaspils, Valmiera (Latvia), Oslo (Norway), Brussels (Belgium), St. Petersburg (Russia), Skan (Sweden).
Personal exhibitions are organized in Liepaja (1993), Riga (1993, 1998, 1999, 2000, 2002, 2004), Daugavpils (1998), Salaspils (1998).
Works by R. Delvers outside Latvia to be in Canada, USA, Czech Republic, UK, Germany, Norway, Poland, Sweden, Belgium etc. article.