formed thereon to freely slide in and out therein to permit the ring to expand a protrusion is fixed near the distal end of the tongue plate which protrusion is sized and shaped such as to prevent the tongue plate from being completely pulled out of the open end of the mounting extension portion the protrusion can comprise a pin and the like alternately the tongue plate can be formed with an enlarged distal end to accomplish the same purpose in lieu of the step of adding a mounting extension portion at the second end of the spring to extend around the tongue plate with an opening the mounting extension portion can be formed at the same the mounting is built around the spring lastly in step 146 the gemstones can be set in the mountings and if applicable in any mountings on the tongue plate table 1 below gives the standard u s ring sizes the differences in diameter between rings sizes is generally between 0 81 mm and 0 84 mm and the differences in circumference is generally about 2 54 mm and 2 64 mm per whole size change u s ring diameter circumference size mm mm 1 12 37 38 861592 2 13 21 41 4794 3 14 05 44 117 4 14 86 46 6604 5 15 70 49 298 6 16 51 51 8414 7 17 35 54 479 8 18 19 57 1166 9 18 89 59 3146 10 19 84 62 2976 11 20 68 64 9352.