Round Brilliant Cut Diamond Trilogy NeckletThis elegant diamond trilogy necklet features a 1. 00ct round brilliant cut diamond set between two 0. 50ct round brilliant cut diamonds. Exuding fluidity in its line work, and boasting an elegant silhouette, as with all the pieces in our Bespoke Collection, this piece is made especially for you. A final price is determined following your 1. 00ct Round Brilliant Cut Diamond stone selection. NATURAL MINED DIAMOND SPECIFICATIONS Total diamond weight: 2.