New Mix-n-Match badges are available in badge central for 16 gems each. These badges will retire on March 1st, 2020.
Poppit! HD - Don't Pop Now Badge - Win 18 games in 2 weeks!
Solitaire Gardens - Garden Spade Badge - Complete 26 levels in 3 weeks!
https://www.pogo.com/challenge/find-badge.do?sortName=released&sortDirection=false
(https://i.imgur.com/0noe7EO.gif)