The basketball player covered just one-fifth of the cost of the sparkler. When Kris Humphries proposed to Kim Kardashian in 2011, he did so with a 16.21 carat emerald-cut diamond engagement ring.

From Jennifer Lopez's pink engagement ring to Kim Kardashian's 15-carat stunner, read on for a roundup of some of the most expensive celebrity rings of all time.

J.Lo's enormous emerald-cut "rare" engagement ring ... photo of the sparkling ring on the superstar’s finger, giving fans a close-up view of the mega-carat emerald-cut diamond.

Ahead of Timothée Chalamet's rumoured proposal, we take a look at the most stunning engagement rings in the Kardashian Jenner family.

While official confirmation of this highly anticipated engagement has yet to break ... Set on a platinum band, the ring featured a 16.5-carat emerald cut diamond flanked by two 2-carat trapezoid cut ...

Her 2.5-carat emerald-cut Neil Lane engagement ring was another one that ended up being returned to ABC, as the couple broke up just months later. The next season finally saw another happily ever ...

Jennifer Lopez showed her traditional side when she married Cris Judd — and started wearing a four-carat emerald-cut engagement ring. Amanda Anka has this to thank fiancé Jason Bateman for ...

The couple's engagement comes less ... with a stunning diamond ring crafted by celebrity jeweler Peter Marco, that features a mega-carat emerald cut diamond stone flanked by two trapezoid diamond ...

Size isn’t everything—but the most expensive celebrity engagement ... Her ring from footballer husband Russel Wilson is a staggering 16-carat round brilliant-cut diamond flanked by two ...