Know Why You're Selling: If you have jewelry you no longer wear, or a relationship changes, or there are debts to be paid, turning your old jewelry into cash can make a lot of sense. Plus, insuring jewelry that's no longer in use can add up to an unnecessary expense.  

Make a List: If you have multiple items of estate jewelry to sell, it's a good idea to take pictures and create an inventory of what you have. If you have receipts or appraisals, or original boxes take pictures of them too.

Be a Storyteller: If there's a family story that's been passed down about how or when your great-grandmother received that necklace, write it down. It may contain important details that could impact the price you'll receive for the item.

Work With a Reputable Dealer: Make sure you're dealing with someone with the education, qualifications and track record to give you a fair and honest appraisal. Look for a professional with decades of experience and a history of investment in the local community. 

Ask About Insurance: If you're going to leave your items with the dealer for further research, or have the dealer sell your estate jewelry on a consignment basis, be sure the dealer has insurance to protect you from a potential loss.