Main material: 18k yellow gold marked with "18k" This type of gold is durable, with a warm and rich appearance, resistant to moderate scratches, but I recommend cleaning it regularly with a soft cloth to keep the shine. Design: The ring has a wide band, segmented into three square (or rectangular) frames arranged symmetrically. They are flanked by decorative elements in gold, creating a geometric, architectural effect. It is a typical style for vintage jewelry, inspired by the late Victorian aesthetics (1880-1900 years) or the Arts & Crafts movement (early 20th century), where simple shapes and structured frames were popular to highlight gemstones. Central stones: Central sapphire: A cabochon sapphire (smooth, facets) of intense blue color, probably about 1-2 carats, set in the center of the middle frame. Natural sapphires (possibly from Ceylon/Sri Lanka) have a high hardness (9 on the Mohs scale), making them ideal for everyday jewelry. Its rich color suggests a sapphire of medium-high quality without major visible inclusions. Side pearls: Two small, round, cream-white pearls (estimated diameter 4-6 mm), set in the outer frames.