Blue Opal Hamsa Necklace POWDER BLUE + 925 BOX Silver Chain Opal, from the Greek, "Opallos" meaning to see a change of color THE ORIGINAL LIGHT (POWDER BLUE) COLOR -- Size of Hamsa: 14mm or .56 inch long Length of Chain: 16 inches long BOX CHAIN: 925 silver Ancient belief states that 'hamsa' protects you from evil