Why do jewelers not like platinum?

Bank of Commerce 3 BANK OF ELK RIVER 9 Bank of Yates City 11 Chino Commercial Bank, National Association 12 CORNERSTONE Bank 16 DREAM FIRST Bank National Association 3 EastBank, National Association 7 Embassy National Bank 2 FARMERS & MRCH Bank 1 FIRST B&T 6 First National Bank of Carmi 4 First National Bank, Amboy 2 Four States Bank 1 Freedom Bank of Virginia 8 Hometown Bank of Corbin, Inc. 3 MID PENN Bank 9 NSB Bank 12 Pavillion Bank 1 State Bank of Eagle Butte 5 SYNERGY Bank 14