Does sky diving harm my breast silicone?

Implants are meant to withstand all of the same stresses that you can tolerate.  They should not limit your physical activity.

If you are careful with landing, sky diving should be safe. Silicone implants have been in space and deep diving and did quite well.

Thanks for the interesting question.  The altitude and fall itself should not affect your breasts, but the straps and harness could theoretically put stresses on the implant.  For example, when we do surgery when someone in the prone position, lying on their face and chest, we protect the breasts and breast implants with chest rolls.  Also on occasion I have seen seatbelts cause breast and breast implant trauma in car accidents.  Hope that helps.