The Petra. Inspired by Hellenistic architectural forms, this bold design is handcrafted using traditional artistry, heroing an emerald cut Sky Blue Topaz in a double bezel setting, suspended off a figaro chain. Wear the Petra as a stand alone piece or layer with KR Chains and Gemstone Strands to create our signature layered look. Available in 18kt gold vermeil and .925 sterling silver.