Swarovski Rhodium Plated Blue Baguette Cut Matrix Ring, Size 52 (US 5.75) Swarovski Ladies Rings. Matrix series. Color: Blue. Swarovski Rhodium Plated Blue Baguette Cut Matrix Ring. This ring, part of the Matrix collection, showcases rich blue princess baguette-cut gemstones arranged on a band plated with a gold-tone finish. Material: Rhodium plated, Zirconia.