JIL SANDER JILSANDER Ring, 2-piece, Zircon, Natural Stone, Pave, New Round-cut white zircon pave ring. *Not cubic zirconia. Zircon Natural stone: A natural gemstone formed over hundreds of millions of years within the Earth. Features: Possesses a strong brilliance comparable to diamonds, with a high refractive index and dispersion. One of the birthstones for December, also known as the "stone of peace." History: Known since ancient times, even appearing in the Bible, and widely used in medieval European jewelry. Size Large: Approximately size 8 (Japan) Small: Approximately size 7 (Japan) I purchased this in the UK about a year ago, but it has been kept in storage without being used. Please feel free to ask if you have any questions.