Diamond in the Rough — Jane Goodger

In the charming seaside town of St. Ives, a buried secret could bring an unlikely pair together for a lifetime...

Clara Anderson's mother has one mission: to marry off her daughter to a titled gentleman. Unfortunately, though the Andersons have come up in the world, Clara is still the granddaughter of a pig farmer, which means no self-respecting aristocrat will marry her. That's just fine with Clara, who's grown to disdain the upper classes. So when she meets an attractive man even more common than she is, she decides it's time to forge her own path...

...Except that handsome, rugged Nathaniel Emory, Baron Alford, is no more a commoner than Clara is a blue-blood. He's appeared on the scene for one reason only: to save his family's estate from ruin by finding the exceedingly valuable blue diamond his grandfather buried in the Anderson's garden fifty years ago. To do that, he must pretend to be a gardener. He didn't count on the most beautiful girl he's ever seen getting in his way. But Clara has made no secret of her dislike for aristocrats. Which means that once she uncovers his ruse, he's certain she'll never see him again...