This is truly a magnificent piece! This has a stunning 5 carat (12 X 10mm) large oval center stone in the most gorgeous and vibrant shade of tanzanite blue. It looks very blue when worn with other blue tone clothing, but it can also take on a slightly purple hue when worn with shades or purple…that's the beauty of a tanzanite colored stone. This eye catching oval stone is surrounded by a halo border of tiny, round synthetic diamonds, which even cover the top bezel loop that attaches this beauty to the chain. The entire pendant drops down 1.25″ from the chain. It slides along the chain gracefully, and the chain measures 16″ long and closes with a spring-ring lock into. This item is made out of nickel-free sterling silver sealed in rhodium-platinum to resist tarnishing when cared for properly.