An 18ct yellow gold and diamond trilogy ring, the central round brilliant-cut diamond

An 18ct yellow gold and diamond trilogy ring, the central round brilliant-cut diamond approximately 1.40 carats, flanked with two round brilliant-cut diamonds of approximately 0.50 carats each, approximate clarity of central stone I1, side diamonds around SI1/2, approximate colour H/I, size P 1/2, 3.5 grams.