Hum Spinner Ring Size N1/2A beautiful "Spinner" ring by one of the most sought after pieces due to the time consuming workmanship and exceptional design. "Hum" have made this piece completely by hand using 18ct gold, natural diamonds and ethically sourced gemstones. Hum is born from the collaboration between designers, Tomohiro Sadakiyo & Yuka Inanuma. "The first thing that truly captivated us was the desire to manipulate metal freely to express our vision." Their deep