Too deep. Poorly cut stone to hit 1.5 ct. Pass on this one. I would stick to stones graded by GIA and AGSL.
Use these parameters as a cheat sheet.
54-57 table
60-62.4 depth
34-35 crown
40.6-40.9 pavilion
75-80 LGF
You want to make sure the crown and pavilion compliment each other. 35/40.6 or34/40.9.
Unfortunately this is not a very well cut stone. I would pass and look for the proportions noted by @crbl999