An antique ruby and diamond ringAntique 18ct Gold Ruby & Diamond Boat Ring, Early 20th Century An antique ring from the early 20th century, crafted in 18ct gold and designed in the classic boat shaped style. The head measures 15 4. 3 mm set with three pink red rubies (two approx. 2. 2 mm, one 2. 4 mm) accented by two old cut diamonds (approx. 1. 7 mm each). The hand carved shoulders exhibit the craftsmanship of the era and a weight of 2. 6 grams and offers a classic profile on the