Actually I think it's made by Gelin-Abaci... although maybe the designer that was mentioned made a similar design to the one I am thinking of.
The reason I know this is I fell in love with the rose gold, and I love the way the diamond is colorful. The ones I am thinking of are Gelin-Abaci design #'s TR142, TR143 or TR144, I think, and is something they have on the front cover of one of their current brochures.