Vintage Marina B 18k Gold Diamond Tubogas Ring Circa 1980s

This Marina B 18k gold diamond ring features a flexible coiled design with rounded segmented gold links that wrap around the finger in a sculptural spiral form. The ring has a bold profile with polished 18k yellow gold sections arranged in a ribbed, tubogas inspired construction. Each end is finished with a pavé diamond cap, adding contrast to the smooth gold body and emphasizing the ring’s rounded, architectural shape.

The ring is signed Marina B and marked 750, Made in Italy, and *1108 MI, confirming 18k gold and Italian manufacture. It dates to circa late 1980s to early 1990s. Marina B was founded by Marina Bulgari, a member of the Bulgari family, after she left the family firm and launched her own jewelry house in the late 1970s. Her designs are known for bold volume, flexible forms, geometric structure, and a modern approach to classic Italian gold jewelry. This ring reflects that design language through its coiled construction, strong silhouette, and diamond accented terminals.

Due to its flexibility, the ring can accommodate a size 7 to 8. It weighs 17.8 grams and measures 5/8 inch in band width.