Dimensions: The size of the crystal chips is fairly consistent and most of the small crystals have at least one side 5mm long.
Crystal chip bracelets are smooth crystals so will not ‘dig in’ to your skin. They will carry the same properties as an equivalent power bracelet. The decision is purely which you would prefer to wear.
Crystal chip bracelets are cheaper than power bracelets because there is not so much production involved in making the crystal stones the right shape for use. Also the crystals themselves are marginally smaller.