|Introduced||November 16, 2016|
|Rare Gem type||Limited|
When the player begins a game with Autumnthyst activated, a special starting layout appears. The configuration includes unique orange gems that resemble maple leaves. A leaf functions identically to a Flame Gem, except a leaf clears 10 gems in a 5×3 pattern instead. A leaf, when cleared from the board, also changes nearby green and yellow gems to orange; Flame Gems transformed by this effect become leaves. The base value for clearing a leaf is 1,500 points. While Autumnthyst is active, leaves replace random orange gems throughout the game, and Flame Gems created using orange gems become leaves instead.
After the Last Hurrah, a Coin bonus occurs in which nine leaf icons appear in a 3×3 arrangement. When the player selects an icon, it reveals a numerical Coin value that is then added to the player's Coin total. The Coin payouts the bonus offers are 1,000, 5,000, 10,000, 15,000, 25,000, 35,000, 50,000, 100,000, and 250,000.
- The name of this Rare Gem is a portmanteau of autumn and amethyst.