Can you make a too-big ring smaller without resizing?
Answered
Temporary fix until I can get to a jeweler.
Jewelry appraisals cost 50-150 dollars per piece, or 100-300 per hour. Some jewelers do it free if you bought the ring there. You need it for insurance. Make sure the appraiser is a GIA GG or has AJA credentials.
Store each piece separately in a soft pouch or anti-tarnish bag. Silver and gold scratch each other. Add silica gel packets to absorb moisture. A divided jewelry box works. Never toss all your necklaces in one drawer - they tangle and scratch.