Jewelry Design Sprout Proposal Ring by Zha Lianghao Sprout is a proposal ring inspired by Tagore's poem and the designer proposed to his wife with it. It adopts an organic ring set with a single round brilliant cut diamond, which looks like a blooming flower in a naturally growing plant vine. The designer completes the design in 3D software, and uses a 3D printed wax mold to cast 18K gold. Finally, it is manually polished, and inlaid with a round diamond.