Crash Bandicoot Gems walkthrough: All green, white, red, blue, purple, yellow coloured Gem locations, Key locations, Secret Levels and how to 100% each game | Eurogamer.net
Crash Bandicoot 1 HD - Jungle Rollers 100% Walkthrough - GREEN GEM REQUIRED - N. Sane Trilogy - YouTube
Jungle Rollers | N. Sanity Island | Levels - Crash Bandicoot N. Sane Trilogy Game Guide | gamepressure.com
C1 | A Hidden Gem achievement in Crash Bandicoot N. Sane Trilogy