Pearlescent weapons first appeared as a new rarity tier in Borderlands, introduced in the 2010 expansion The Secret Armory of General Knoxx and later returning in Borderlands 2. Marked by a cyan loot beam instead of orange for legendaries, they became the most sought-after drops in the looter shooter, with very low drop rates from tough enemies. Clips of the beam and its cue were shared across forums and videos as proof of a genuine find, which helped turn the short drop sound into a recognisable shorthand for extreme luck in gaming edits.