Give her what she wants. It is all well and good knowing your IFs from your I3s, but if you don't buy her the right type of engagement ring, all is lost. Perhaps the most important piece of advice is never to surprise her with a diamond ring, and not to buy something according to your own taste.
formication in Medicine. formication forÂ·miÂ·caÂ·tion (fÃ´r'mÄ­-kÄ'shÉn) n. An abnormal sensation as of insects running over or into the skin, associated with cocaine intoxication or disease of the spinal cord and peripheral nerves.
FORMICATION is the medical term for a sensation that exactly resembles that of small insects crawling on (or under) the skin. It is one specific form of a set of sensations known as paresthesias, which also include the more common prickling, tingling sensation known as pins and needles.