A stunning abalone shell and raw opal necklace. The shell itself is encased in hand done metalwork, polished, then sealed. This beautiful shell portrays rainbows on the front & back with colorful flashes of bright blue and green at certain angles in the light. A very spectacular occurrence in nature . The metal used is a low alloy silver bearing solder by Stay Brite (#8) that's 94% tin and 6% sterling silver. Very light weight, comes on a 18" silver tone necklace but up to any length…