A ring re-sizing attachment is appended to the internal circumference of a ring band so that a ring band large enough to pass over a knuckle remains comfortably fit around the digital finger below the knuckle. The attachment includes two or more telescoping buttons joined to a base, with a conical spring urging the buttons away from the base. The spring is compressed and the buttons urged together to increase the space within the band to move the band beyond a knuckle. Once the band is beyond the knuckle, the spring urges the buttons away from the base to tighten the fit of the ring band around the finger.