CAN'T-MISS COLLECTION Greatest Hits Boxing icon Muhammad Ali is the inspiration for a new men’s jewelry collection that pays homage to one of the greatest athletes of all time. New York City–based Twenty Three 9 Design’s licensed line in sterling silver with CZ features three subcollections focused on the champ’s inspirational quotes, signature, and portrait. (There’s also a fourth line in 14k gold and diamonds.) Buy-in starts at $3,500, and a portion of proceeds benefits the Muhammad Ali Center.  Top: photo cufflinks in silver with CZ, $195, pendant necklace in silver, $195; inset: cufflinks in silver with mother-of-pearl, $195; Twenty Three 9 Design, NYC; 888-600-0494; twentythree9.com HOT STOCK TIP Geometry Lessons Facets mismatched earrings in oxidized silver and 18k gold with 7.63 cts. t.w. green beryl and 0.5 ct. t.w. diamonds, $3,600, elizabethgarvin.c