I drew out three circles, one four inches across, then 3 1/2, then 3 on a spare manila folder to serve as a pattern.
The largest and smallest circles I cut out of the citrus colored felt, the medium circle out of white felt.
The smallest felt circle will be the sections of fruit, so I cut that into eight wedges.
This bit is totally optional, but to keep the soon to be coasters from sliding around in the table I cut out another four inch circle from some craft foam.
A judicious amount of glue later and I had these.
Since the lime one isn't actually done yet but the light's going so i needed to take a photo now, an actual lime took it's place. I just wanted to let you know that I don't regularly use coasters for fruits,