The phrase "opulent touch" refers to adding a luxurious or grand element to something. It implies making something look or feel rich, fancy, or extravagant. Full definition
The overall vibe of the house is calm and serene, but a few opulent touches here and there add a bit of glamour. (idealhome.co.uk)
Plush bathrobes and slippers provide the ultimate opulent touches while a laundry / storage room ensures plenty of space. (grosvenorhouse-dubai.com)
I love the shiny, opulent touches mixed with tailored YSL and Halston pieces and especially the big hair that went along with it. (currentlycrushing.com)