Like fiery comets against the evening horizon, Mandarin Garnets appeared in the gemstone trade in 1991. Specialists and gemstone lovers all agreed: the magnificent colors and high brilliance of these orange-red treasures surely are unique. A Vibrant Mandarin Garnet and Diamond ring. Crafted in platinum and 18kt yellow gold. This oval shaped Mandarin Garnet is simply brilliant. perfect color to compliment a seasonal Autumn wardrobe.