Jewelry Design The Rose Fountain Jewellery by ONESWEAR The Rose Fountain is a diamond ring inspired by the form of a revolving rose fountain. The design uses a rotary setting technique that places the stones along a curved line that rises like a water column, so the ring can be viewed from all angles. The curved arrangement increases the light return of the stones and makes the central diamond look larger than in a conventional setting. The ring is made of 18-karat white gold and set with diamonds, and a ruby is placed on one side of the ring arm. The ring measures 30 by 15 by 35 millimeters.