To convert carats to ozs divide by 141.7476. I've generated some hopefully helpful examples randomly below, as with most random sentences please excuse the repetitive and occasionally comic outcomes.
You've got 4.4 carats of ruby's but someone only wants to buy that in units of ozs, to change the units divide by 141.7476. Now you have 0.03104109 ozs.
How many ozs of silver are there in 6.5 carats? Just divide by 141.7476 to get the answer of 0.04585616 ozs.
You have 7.3 carats of emeralds but you need to know how many ozs that is. To get the answer divide by 141.7476 which gives you 0.05149999 ozs.
In 4.7 carats of platinum there are 0.03315753 ozs, to achieve this take 4.7 and just divide by 141.7476.