Reprinted with the settings from: http://fenneclabs.net/index.php/2018/12/09/3d-printing-transparent-parts-using-fdm-fff-printer/
Took almost 3 days to print but it's evident in the comparison shot that it was worth it.
If I had to print it again I would probably use spiralize/vase mode (which showed was only just over a day to print) to keep the amount of material to a minimum, but I'm also using "house brand" transparent filament so I'm sure with these settings and a more transparent focused material it would produce an even better result.
Blue Eagle Labs All Metal Delta
6% Infill overlap
24 mm/s print speed
Print Cooling off
250°C / 60°C