Hi Loula. I got my fingerprint pendants back today and I LOVE them as I said they were taken at 10 weeks and I think they look great. Obviously there isn't the 'clearest' fingerprint like an adult would have but there are lines on it and you can tell that it's a finger print kwim. I was going to be happy with the indentation of his little finger tip anyway so I think at 3 month olds the prints would turn out really clear.