THIS EXTRAORDINARY PIN/PENDANT HAS BEEN CRAFTED IN THE TUBOGAS STYLE. TUBOGAS IS A FLEXIBLE, SOLDER-FREE JEWELRY TECHNIQUE MADE BE WRAPPING TWO INTERLOCKING METAL STRIPS (USUALLY GOLD) TIGHTLY TOGETHER AROUND A CORE. THE TECHNIQUE EMERGED IN THE 1870'S AND 1920'S AND BECAME ESPECIALLY POPULAR IN THE 1940'S WHEN WARTIME MATERIAL SHORTAGES FORCED JEWELERS TO BECOME MORE INVENTIVE. IT BECAME VERY POPULAR WHEN BVLGARI INCORPORATED IT INTO THEIR JEWELRY COLLECTIONS. THIS OPENWORK PIECE CONSISTS OF COUNTLESS TWISTS AND TURNS ENDING WITH A ROUND DOME CLUSTER OF DIAMONDS IN THE CENTER WITH A ROUND DIAMOND SET ABOVE AND BELOW IT. ON THE BACK SIDE IS THE PIN APPARATUS AS WELL AS A SHEPHERD'S HOOK FOR YOUR CHAINS. THIS EXQUISITE AND VERSATILE PIECE SHOWCASES ALLURING ARCHITECTURE EXTRAORDINARY WORKMANSHIP.