Known to serious collectors and aficionados, G is one of the most sought-after private jewelers in the world. Led by the renowned Glenn Spiro, the British creator established his own house in 2014 after over twenty-five years dealing in only the rarest gems. In his appointment-only London atelier, the former studio of fashion designer Sir Norman Hartnell, Mr. Spiro combines exquisitely detailed settings with a careful selection of unique stones. A couture piece from the G Atelier can be years in the making and his technical mastery has gained a cult following of collectors. Rapper Jay-Z famously gifted wife, Beyoncé Knowles, the “Papillon” butterfly ring, crafted with 326 tsavorites and 342 brilliant-cut diamonds. In 2018 the iconic ring was donated to the Victoria and Albert Museum in London where it remains on view with the permanent collection. Featuring original photography of the most iconic pieces in his collection, the spirit of one of the boldest and inventive names in jewelry comes alive in a luxurious and colorful volume devoted to his show-stopping works of art.

  • 208 pages
  • Over 200 illustrations
  • English language
  • Released in April 2020
  • W 35 x L 28 x D 4 cm
  • Linen hardcover in luxury slipcase
  • ISBN: 9781614288596
  • 3 kg


Raymond Sancroft-Baker joined Christie’s in 1969 and was their numismatist until he joined the jewelry department in 1988. For the next twenty years, he served as the European jewelry director, based in London, but during his career he has also worked in Geneva, Hong Kong, Los Angeles and New York. He was responsible for Christie’s first theme sale, in 1992, Jewels and Works of Art by Cartier, and in 2006 organized the sale of jewelry belonging to the late Princess Margaret. He became a consultant in 2008 and is a fellow of the Gemmological Association of Great Britain.

Jill Newman is a jewelry expert, editor and writer. She has covered the international luxury market for more than twenty-five years and focused much of her attention on fine jewelry, diamonds and gemstones. Jill is Town & Country magazine’s contributing jewelry and watch editor. Over the past two decades, Jill has contributed print and digital features on jewelry, watches, style and culture to leading consumer media brands, including Robb Report, Departures, W magazine and  Magazine; and over the course of her career, she has facilitated in-depth coverage on the mining industry, which included several visits to diamond mines across Africa, as well as trips to cutting workshops in India and gem mines in Brazil. She also visited the world’s most illustrious jewelry workshops—from Paris and London to New York and Japan—to understand the history of the craft, as well as pioneering new techniques. She resides in New York City.

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