The Mercury is comprised of three linked rings: one of 18k yellow gold, one of 18k rose gold, and of sterling silver. The bands are joined by two connectors: one of 18k yellow gold, and one of 18k rose gold.
The Orion is comprised of three linked, sterling silver rings, one of which is detailed with 18k rose gold annulets. The individual bands are joined by 18k gold connectors: one rose, one yellow.
The Raneth Silver by Spinelli Kilcollin is comprised of three linked rings of sterling silver with two silver annulets, all joined by sterling silver connectors.