Watches are timeless and functional accessories, with pocket watches dating back to the early 1500s. They’re also some of the most collectible items in the world, not just a fashion accessory but representative of history and culture as well.

The more rare luxury watches and those with unusual or bespoke features can easily fetch several million dollars, particularly at auction. Talk about haute horology.

Here, we take a closer look at the world’s top 10 most expensive luxury watches. Brace yourself: The least expensive one on this list still comes with a seven-figure price tag.

10. Hublot Big Bang, $5 million

When Hublot, owned by luxury powerhouse LVMH, unveiled its completely diamond-encrusted “Big Bang” watch in late 2012, A-list star Beyoncè pounced on the chance to buy it for a cool $5 million for her husband Jay-Z’s 43rd birthday.

The visually distinct luxury watch features an astounding 1,282 emerald-cut and baguette diamonds, weighing about 118 carats total. Several emerald-cut diamonds set in the bracelet are each larger than 3 carats a piece.

Adding more drama and bling to the striking aesthetic is an 18-karat white gold dial and self-winding hands.

Hublot painstakingly and precisely created the Big Bang luxury timepiece. The company spent over a year sourcing the diamonds and another 14 months assembling the watch, enlisting the help of five diamond setters and 12 diamond cutters who reportedly worked full-time on it for over seven months.

Every single diamond on the Big Bang was also hand-cut by a single New York City jeweler, so as to ensure they had the exact same cut signatures.

9. Patek Philippe Ref. 1518 in stainless steel, $11 million

At first glance, you immediately notice something unique about the Patek Philippe Ref. 1518 in stainless steel. It’s not an unusual color or covered in diamonds – it’s made of stainless steel.