Gultekin Sartekin was born in Istanbul in 1978. Since his childhood years, he has been standing out as a talented artisan with a great power of imagination. After completing his academic education he joined his family company Kelim Schmuckdesign where he started working on his first jewelry models.

His designs won several top prizes on international exhibitions such as New York and Las Vegas. Still working in Kelim Schmuckdesing, Gultekin has created his own brand Nefsim Design in 2015 and continued creating jewelry models under his new brand.