K-Gems are game's premium currency. They can be used to purchase more energy, special Charm answers, rush quest start times, Giftboxes, and the best clothing and accessories. Get more followers. When you reach a certain ranking, you may be rewarded with K-Gems. During the early part of the game, you will be give some K-Gems from meeting the Kendall and Kylie. You will keep getting the occasional free K-Gem as you progress.