Encapsulating a major metropolis in the space of half a finger is no easy feat. But German jeweler Wempe’s New York City ring does just that. In the one-of-a-kind piece—part of a series of 13 city-themed custom rings in the Cosmora collection, the newest in the By Kim line—Manhattan’s massive skyscrapers shrink to jagged diamond skylines straddling a verdant Central Park (rendered in green diamonds, green tourmalines, and blue topazes). Company owner Kim-Eva Wempe wanted the design to evoke “the feeling of a visitor experiencing the city for the first time,” and contrast “the lush nature in Central Park” with the “imposing backdrop of steel skyscrapers.” The notion that “anything is possible in New York” was another inspiration, says Wempe, adding cheekily, “Welcome, visitors, to the New World.”

Hunting and Gathering

The ring—designed by Catherine Plouchard and fabricated in the company’s atelier in Schwäbisch-Gmünd near Stuttgart, Germany—took nearly a year to execute. “We wanted to create something remarkable,” says Wempe. “We pushed our imagination and challenged our level of artistry.”

Metro Majesty

None of the 13 Cosmora By Kim city rings, including New York City, is for sale, but Wempe says a hypothetical retail price for the New York City ring would be “over a million dollars.”

Urban Plan

This mini city is forged in 18k white gold and features 170 stones: three square-cut diamonds, 17 princess-cut diamonds, 18 baguette-cut diamonds, five trapeze-cut diamonds, three trillion-cut diamonds, one navette-cut cognac diamond, 11 brilliant-cut blue diamonds, 13 ­brilliant-cut gray diamonds, 30 brilliant-cut green diamonds, 45 brilliant-cut diamonds, 19 green tourmalines, and five blue topazes.