Antique Cushion Cut Sapphire & Diamond Engagement Ring in 14k.  This Victorian sapphire and diamond engagement ring is set in 14 karat yellow gold. The oval cut 1.25 carat sapphire has the most amazing blue color and is wrapped in a halo of single cut diamonds. Combining the gold, blue, and white in this dazzling antique creates a wonderful palette with lovely contrast. This fine antique engagement ring is the perfect thing for someone looking for a unique look with great color.