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 Subject: conversions Name: Donna Who are you: Student Hi! I hope you can help me... What is the cost of 10 grams platinum if one ounce = $1200 (troy weight)? I REALLY appreciate your help. Can you please send me the formula to figure it out too? Thank You! Donna :) Hi Donna. There are many good unit conversion tools on the internet. One I like to use is this one: http://www.onlineconversion.com/ which will help you convert 10 g to troy ounces. Then you can multiply by$1200 per