Metal: 18K white gold. Diamonds: 0.40 carats total. Round brilliant cut. G color and VS clarity. Blue Sapphire: 6.50 carats. Cabochon cut blue sapphire set in prongs. All precious stones are 100% natural earth mined. Total carat weight of all precious stones: 6.90 carats. This is a vintage ladies diamond and blue sapphire ring. Deep color and saturation. Diamonds are remarkable due its luster and shine. Excellent ladies sapphire and diamond ring. Perfect to gift her at birthdays, weddings, anniversaries and other special occasions.