Simple bar-shaped studs cast in oxidized sterling silver. Also available in Sterling Silver. -0.5" length. -0.5" post. Vipada Wongpatanasin is a self taught jeweler based here in San Francisco. Cinq was born as an outlet for Vipada's passion for hand crafting and is inspired by simplicity and the desire to create adornment that enhances the beauty of a person and becomes one with the wearer. Everything is hand-crafted by Vipada in her Haight Ashbury studio.