Floating diamond ring/wedding band 18ct white gold

18k white gold ring. Number of center round diamond 11. Total diamond weight .50 (ct.cw). Clarify is G. Au750 and karat weight are engraved inside the ring band. Size US4. Only tried it on for several minutes. Didn’t suit my skin color. Jewelry box not included. Poshmark would authenticate if the price is over $500.