NEW YORK – An 18K gold Van Cleef & Arpels 20-motif Alhambra necklace in lapiz lazuli, a Tiffany & Co. platinum, diamond and sapphire flower basket brooch, and a Van Cleef & Arpels 18K gold and diamond Ludo Swann wristwatch will battle for top lot status at Jasper52’s Designer Jewelry & Watches auction, which will take place Tuesday, May 10, starting at 11 am Eastern time.