Art Deco 18ct Yellow Gold and Platinum Diamond and Sapphire Ring

1 Diamond, color: N, clarity: SI2, dimensions: 4.3 x 2.7mm, weight: 0.30ct
13 Sapphires, 11 trapezoid cut @ 1.8 x 1.1mm AVG, 2 triangular cut @ 1.8 x 1.8mm, total weight: 0.26ct, color: deep blue
Ring diameter: 7.7mm, height: 4.1mm, weight: 1.7 grams, size: R 1/2