These are indeed quite small but very sparkly. Would advise to size up to the 3mm. The taper set helps to put it in, but after a few tries have got the hang of it. Also love that this doesn't irritate my ears. I had already been exclusively wearing 18K white gold, but over time have developed an irritation to the copper in white gold (not all white gold is made equally, clearly). These do not irritate my ears and I have them in 24/7. Has been a month and I do not see any build-up or oxidising on it, still good as the very first day. Love it.