Like their Japanese Judoka counterparts, BJJ awards different colored belts to signify increasing levels of progression. Originally based on the Judo ranking system, BJJ has shifted away from this. It now contains many of its own unique aspects and themes. Some of these differences are relatively minor, such as the division between youth and adult belts and the stripe/degree system. Others are quite distinct and have become synonymous with art.
Gaining a black belt in Brazilian Jiu-Jitsu can take years to earn, and the rank is generally considered expert level. The average timeframe is around 7-10 years (depending on ability, determination, and mindset) with a regular training schedule.