Using a Prong Lifter and Prong Pusher690Y
If you've set a stone but need to make an adjustment, you can use a prong lifter to help solve the problem.
Match a notch on the prong lifter to a prong on your setting.
Continue around the setting until you're able to make the necessary adjustment.
To close the setting back up, place the prong pusher along one side of an open prong. Gently press on the tool, working in an upwards motion, maintaining the original angle of the prong. Continue pressing and gently rolling the tool along the prong. Work until the tip of the prong is pressing against the stone. Repeat on the prong on the opposite side of the setting.
Repeat all the way around the setting until all prongs are closed evenly. If necessary, go around the setting again until the prongs are closed around the stone securely.