A diamond set four leaf clover necklace

composed, when open, of a row or four heart motifs mystery set with princess cut diamonds, spaced by pivots each set with a round brilliant cut diamond, with curved lines of further round brilliants at the ends, which snap together with a hidden magnetic clasp when put close together forming a diamond quatrefoil or four-leafed clover; to a fine belcher link back chain of white metal stamped '14k' and '585'; of adjustable length 37.5 - 47cm, cased