The Jewel has a 100% drop chance out of safes which come from/out of air drops that look like safes with a longer search time to open. The jewel is worn on the back of the player replacing the back bling slowing the player down a little. The Jewel is an item required to take to a Getaway Van to get a Victory Royale.
The Jewel was only available on High Stakes LTM through Drop Safe. However in Season 9, the jewel can now be obtained from the consumables menu in Creative