A golden ring dangles from a wide, polished band at the center of a slender wire collar necklace handcrafted in Australia. Tension clasp closure. Nickel-free. 14k gold. Made in Australia. SPACE: A shop for emerging and advanced designers. Partners in life and in jewelry making, Sarah Gittoes and Robert Sebastian Grynkofki of Sydney, Australia's Sarah & Sebastian combine backgrounds in design and goldsmithing for a series of clean but bold rings, bangles and chokers..