@jennyjoan
You cannot eat gold so, in a recession, those who need cash more than they need body decorations willingly exchange their jewellery for cash. Jewellers have a steady trade and will seldom fall on hard times.
If they were to prioritise selling their stock over all new acquisitions, the reduced product choices would drive some customers elsewhere and then they really would risk going down the tubes due to cashflow problems (if rent/rates/utility bills/wages etc. exceed income).