Your choice between 9k and 18k solid white gold.
Solitaire ring: approx. 2mm wide band; 0.25ct Sapphire in a thick bezel setting.
Wave arch: approx. 2.5mm wide band; 1.5mm thickness; 1.2mm green tourmaline, emerald, teal green Australian sapphire, light green Australian sapphire, natural white diamond in flush setting.