From the Africa Collection. Inspired by the beauty of African desert landscapes and starry nights, Marco Bicego's ring is crafted of 18K yellow gold embellished with vibrant mixed gemstones. Hand-engraved details add a brushed, silk-like finish to this stunning accessory. Amethysts London blue topaz Peridots Pink tourmalines Citrines Blue topaz Garnets 18K yellow gold Made in Italy. Fine Jewelry - Marco Bicego C > Marco Bicego > Saks Fifth Avenue > Barneys. Marco Bicego. Color: Yellow Gold. Size: 7.