Anant Ambani is the proud owner of an envy-worthy collection of watches. The youngest son of Mukesh Ambani and Nita Ambani is a horologist and often wears pieces from luxury brands like Richard Mille, Patek Philippe, Audemars Piguet, and more. Recently, during an outing with Radhika Merchant, he wore a one-of-a-kind watch - The Richard Mille RM 52-04 "Skull" Blue Sapphire.

It is one of the world's rarest timepieces. Also Read | Nita Ambani shines in a glittering gown as she parties with Anant, Akash Ambani and friends on New Year Anant Ambani's rare Richard Mille watch In the world of horology, the Richard Mille RM 52-04 "Skull" Blue Sapphire is considered one of the world's rarest timepieces. Per the Instagram page, The Indian Horology, it is only available to the very best Richard Mille clients.

Moreover, only three pieces have ever been made of the watch, making the RM 52-04 Skull an extremely rare sight for collectors, according to Vintage Grail, a luxury watch store. “You'd be lucky to have seen these in your lifetime,” a post on their Instagram page said. A post shared by THEINDIANHOROLOGY (@theindianhorology) The Richard Mille RM 52-04 is crafted in a single piece of sapphire and features a pirate skull and crossbones in the tonneau-shaped case.

As per The Indian Horology, the back of the skull, part of the movement as a centre bridge, is visible via the sapphire caseback. Additionally, the four bridges that look like the “bones” of a pirate flag attach the mov.