On The Rocks Engraving specializes in custom glass and rock engraving. As one of the few mobile engravers in the Portland metro area, we bring our expertise to you when needed. Our clients range from schools looking for engraved bricks for fundraisers, individuals needing custom headstones, private & government agencies needing historical markers or monuments, and people looking for unique gifts. With our wide range of knowledge, we can create something for everyone.