Belkız Sünnetçioğlu opened a workshop in Cağaloğlu in 2006 and started to work there part-time. She manufactures custom-design jewelry collections with gold and various gems. Her most well-known works are the custom-made name designs which include the Istanbul ring with Yıldız Şermet in 2016 and she continues to develop the Istanbul collection. Her designs consist of diamond and colorful gems, colored gem arrays, pearls and various materials in minimalist style.
