These stunning earrings are set with rough cut aquamarine crystals for an organic look and feel. A native of Germany now based in San Francisco, Petra Class has been handcrafting sculptural, contemporary jewelry for over 25 years. The esteemed jeweler is known for transforming semi-precious gemstones and textured metals into wearable works of art. Aquamarine. 18- and 22-karat yellow gold. 1"L x 1/2"W.