How much do round 500cc and 600cc butt implants weigh?

Depending upon the manufacturer and thus the silicone formula/density, a 500 cc buttock implant will weigh about one pound and 600 cc about 1.25 pounds. Hope this helps. 

Thank you for your question.  An implant of that size should weigh about 1lb. Be sure to choose a Board Certified Plastic Surgeon who specializes in this procedure and has a low complication rate.