INSPIRED The Coluna rings, inspired by classical architecture, propose a sophisticate and timeless look. As in Greek temples, their design was based on logical shapes and mathematical proportions, aiming to transmit the idea of balance, harmony and proportion. Their irregular shape makes reference to the geometrical character intrinsic to the Greek style. Rhodium / 18k gold plated over 925 Silver - 2.9 grs Emerald cut Blue Topaz - 26.7 cts 4 White Topaz round 1.0 mm diamond cut