SUNYIK Stone Stud Earrings,Crystal Healing Post Earring for Women Men Size Details(Approx):Stone:0.47"x0.31"(12mmx8mm);Pin:0.04"x0.39"(1mmx10mm);Weight:4 Gram Metal for pin:Alloy;Quantity:1 Pair Since every stone is unique,they are different with each other, we will send what we have by random. We wear crystal jewelry, hold crystals in our hands, keep them in our pockets, bras, socks, etc. They are placed on our body in healings. We display them in our homes, hang them in our cars, place them on our body, by our computers and under our pillow. Crystals grids can be extremely powerful.