Christine Merrill 
Ring from a Marquess [EPUB ebook] 

Mistress or Wife? Independent Margot de Bryun has no intention of giving a man control of her life! Although handsome rake Stephen Standish, Marquess of Fanworth, does pique her interest… Maybe a man can offer other advantages? Stephen sees Margot as perfect marriage material—talented, intelligent and alluring. But when a stolen family ruby is traced to the jewelry shop Margot owns, Stephen is infuriated and demands she become his mistress. Except Margot’s not one to be easily tamed—and whether she be mistress or wife, sparks will certainly fly! "Merrill delivers another juicy, scandalous romance." —RT Book Reviews on The Fall of a Saint