Assess the situation
When arriving at a yard sale, scan the set up for jewelry if you do not see any jewelry do not be afraid to ask. Be courteous and respectful to the people around you. Simply asking the seller if they have jewelry for sale, could potentially get you to the area faster. Many times after inquiring about jewelry, I've had the sellers go in the house and bring out a box. I will quickly try to buy the lot to avoid other customers hawking in and potentially creating an awkward situation. Sometimes a seller will give you a price and looking at the box you can see one item that will bring in that much profit.