Negative effects of reducing the size: it will reduce the number of small diamonds and reduce the weight of the ring. It is easier to make the ring smaller, as long as the original ring is sawed off and then welded in two sections; Enlarging the ring is relatively complicated, some can be achieved by knocking, and some must saw off the original ring and then connect a piece of metal material with the same material.
Make it bigger: this may increase the weight of the ring. If the size of the ring changes by only one or two yards, it will be very easy to deal with. Just use a hammer to increase the circumference of the inner ring, so that the ring will become one or two sizes larger. However, if the size of the ring needs to be changed by several yards, you need to pay the material fee, because the merchant has to cut the ring and add the precious metal with the same material as the original ring on the basis of the raw material of the ring.