A sapphire and diamond ring with a moving shape in size L1/2, 18k gold, and weighing 6.4 grams from the early 1900s is a unique and stunning vintage piece of jewelry. The sapphire center stone adds a pop of deep blue color, while the diamonds add a touch of sparkle and elegance to the ring.

The moving shape design of the ring adds an interesting element of surprise and movement, making it a captivating and unique piece of jewelry.

When wearing the ring, it's important to ensure that it fits comfortably on your finger and doesn't slip off. You may also want to consider the care and maintenance of the ring to ensure its longevity and beauty over time.

Overall, a sapphire and diamond ring with a moving shape design in size L1/2, 18k gold, and weighing 6.4 grams from the early 1900s is a beautiful and rare piece of vintage jewelry that can add a touch of sophistication and glamour to any outfit.