Here is an amazing 1920's 1ct Diamond Platinum Engagement Ring. The ring features a stunning old mine cut diamond that weighs 1ct and is GIA certified. The color of the diamond is I with SI1 clarity. The center diamond is accentuated by approximately 0.50ct of round and French cut diamonds. The color of the diamonds is G with VS clarity. The size of the ring is 5 1/4 but it can be resized.