Mac's estate filed new legal docs, obtained by TMZ, which list some of his assets. Among them ... nearly $5 million in master recording assets, $1.5 mil in music royalties, and $180k in Mac Miller LLC.

The docs also reveal Mac had an extensive jewelry collection, which includes a $31k 18 karat Presidential bracelet, a $20k Rolex and another $14k Cuban link necklace.

He also left behind $20k in household furniture, $15k worth of electronics and a 2009 BMW 5 Series valued just over $6k.

In all, the items total around $7 million.

TMZ broke the story ... Mac died from a lethal combination of fentanyl, cocaine and alcohol on September 7, 2018. His assistant found him unresponsive on his bed in a "praying position" at his L.A. home.

Last week, charges came down against 28-year-old Cameron James Pettit, whom the feds allege supplied Mac with counterfeit oxycodone pills that contained fentanyl in a new 42-page criminal complaint out of the Central District of California.

Per the docs, prosecutors claim Mac had asked Pettit for "percs" -- short for percocet, a prescribed painkiller full of oxycodone -- and that the dealer ended up supplying the pills that contributed to Mac's accidental overdose death last year.