Blue Opal Hamsa Hand Necklace - 15 to 22 Inch Blue Opal Hamsa Hand Necklace Hamsa measures 11mm x 13mm Chain length: 14, 15, 16, 18, 20, or 22 inch long Box Chain 925 sterling silver or 18K gold plated sterling silver Click on the LuckyCharmsUSA link above to shop for a wider selection of opals