Though this looks to me like the Sputnik inspired jewellery so popular in the 1950s, it is actually inspired by the diving bell and made by California-based Coléoptère.

According to the Coléoptère web site:

“Described by Aristotle, deployed by Alexander the Great, and employed by Salvador Dalí, DIVING BELL’S storied past inspires our golden ode to all manner of exploration, maritime and otherwise. 18k yellow gold and platinum hand-fabricated 26 mm spherical pendant with 35″ 18k gold round cable chain. 59 quartz crystal bezel-set windows with 4.175 tcw white diamond pavé throughout the interior.  A very special piece, with limited production. This piece is hand-fabricated. A member of our client services team will contact you for further information upon placement of your order. This piece is also available entirely in platinum. All pieces are made-to-order; due to the complexity of this piece, it will ship within 8-12 weeks of order placement. Designed and made entirely and sustainably in California.”

The site owners make each piece to order: “Coléoptère is a fine jewelry house rooted in the idea that intelligence exists in style just as it does in everyday life. The house celebrates women who are informed, curious, complex, and creatively liberated — women whose very lives are une pièce de résistance. We embrace the modern, the playful, and always the slightly subversive.

Our process is different: we make every piece entirely by hand, and only when ordered, so we welcome personalization of our pieces. Nothing is ever machined or built in bulk. Coléoptère takes pleasure in carefully sourced materials shaped by the most skilled goldsmiths — executing restrained, intelligent, and modern designs that can be worn every day, over a lifetime. The story of each made-to-order piece is deepened over the years by the life of the woman who wears it.

All pieces use FAIRMINED and recycled precious metals. We purchase Canadian diamonds exclusively, and always the highest quality available at every size stone. Our jewelry is made and set by California-based master goldsmiths and stonesetters.

Should this diving bell float your boat (sorry, couldn’t resist), it is USD $64,900.