well if i had to resale wich i'd never do btw, i'd charge per ct.
that breakdown as follows
the first stone is 19 cts i'd charge $12 a ct for, $328
the second stone is 11 cts i'd charge $10 a ct for $110
the third stone is 7 cts and i'd charge $10 a ct for $70
the forth stone is also 7 cts i'd charge $10 a ct for $70
so the grand total for those rocks is $578 that i got away with for $134