An aquamarine ring

An aquamarine ring, the emerald-cut aquamarine is mounted in yellow gold with five small old circular-cut diamonds set to each shoulder, size G1/2. A white gold ring mounted with an oval-shaped amethyst between two lines of small diamonds and further small diamonds to the shoulders, size N1/2. And a gold ring set with an emerald-cut citrine and three round brilliant-cut diamonds to each shoulder, size E1/2.