Here's Bang Bang in all its celestial connotations. Stars of different ages radiate heat of different colours and are represented by 48 baguette cut precious stones.
"Amethysts are followed by sapphires in rose, orange, fuchsia and different shades of blue to create a constellation of stones in perfect colour transition," notes the press release of the impressive factual detailing, further noting the difficulty in sourcing just the gems you want and the jeweller's art required after.
Inspired by the invisible material that makes up most of the galaxy, Hublot decided to further innovate using sapphire crystal to craft a case.
But it's the case that is most conceptually impressive. Scientists speculate that the universe comprises mainly nothing, held in place by mysterious invisible stuff. (If only they would look up ether.) Inspired by this, the Big Bang Unico Sapphire Galaxy has a case made from... sapphire crystal which Hublot first used in 2016.
Being the second-most scratch-resistant material after diamond, as far as is known, it's difficult to work with but is eminently functional.
There's a Big Bang Unico Sapphire Galaxy with a 45mm sapphire case in clear sapphire crystal and a version in all black. The smoked sapphire crystal "results in a striking all black case bringing to life the night sky" and the two models are meant to "embody the duality of the visible and the invisible".