A menstrual cup is a silicone rubber cup that you insert in your vagina during menstruation as a natural alternative to tampons or pads. Another one of the benefits of menstrual cups is that it has a wonderful effect on the environment and is zero waste. While using pads and tampons there is so much material that you waste. Think about it, you buy a cardboard box of tampons or pads, then you need to take it out of the wrapping http://www.cntopnurse.com/

since it is a single crystal. It can be polish to very smooth finish with very low friction.Hardness and coefficient of friction of single crystal natural diamond dies vary with crystallographic orientation and results in increased die wear along certain crystallographic directions. Toughness is very poor for natural diamond as the diamond crystal has naturally weak points called cleavage planes where fracture occur easily . http://www.natust.com/cnc-machined-parts/stainless-steel-parts/