'considerable refinement' is correct and usable in written English.
You can use it when you want to refer to something being improved or polished to a high level. For example, "The chef put considerable refinement into the dish, producing a masterpiece."
Another year of development should bring considerable refinement.
Conducted with considerable refinement by Christian Curnyn, the opera is for the most part finely sung.
Mr. Cooper belongs to the same school but he is a considerable refinement.
Ozil, a playmaker of considerable refinement for Real Madrid and Germany, brings both excitement and status to Arsenal.
"The Union" is a pianistic circus of considerable refinement, one that negotiates the narrow space between first-rate showmanship and bad taste.
This picture raises many difficulties, and needs considerable refinement and defence.
Preoperative therapy strategy has been around for a long time, 17– 19 but it is only now that we are seeing some of the results of prospective evaluation, 20, 21 and the strategy needs considerable refinements and upgrades.
Their passionate playing had considerable tonal refinement.
Under DC conditions, the addition of BD enhanced the perfection of [100] preferred crystal orientation and promoted a considerable grain refinement.
Main reason of water absorption reduce is the addition of SF which causes considerable pore refinement i.e. transformation of bigger pores into smaller one due to their pozzolanic reaction with cement hydration.
The reason for such a decrease in the chloride ion penetration depth is because the addition of SF cause considerable pore refinement i.e. transformation of bigger pores into smaller one due to their pozzolanic reaction concurrent with cement hydration.
