Round Brilliant & Marquise Cut Diamond Anniversary RingThis stunning custom made anniversary ring features a half band of alternating round brilliant and marquise cut diamonds set on an 18ct gold or platinum band. 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. NATURAL MINED DIAMOND SPECIFICATIONS: Total Diamond Weight = 0. 75ct 0. 24ct TDW Round Brilliant Cut F+ VS Natural Mined Diamonds 0.