just tried this out 12 years later in 1.20.6 and my god is this thing efficent! if you do not have the redstone to build the contraption, i suggest you dig down 19-21 blocks down or until whatever mob that spawns is 1 hit from fall damage.
Tango has unstackable diamonds (tagged), wouldn't they be yours from the beggining of season? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-oAvPZwbM1Mc.html