Of the many collectibles to find in The Legend of Zelda: Skyward Sword HD, Gratitude Crystals are among the most valuable. You'll receive these gems after helping the residents of Skyloft with their various problems, and you can trade them to Batreaux for special rewards like bigger wallets and pieces of heart, so you'll want to collect as many Gratitude Crystals as you can while adventuring around the skies.
One of the final Gratitude Crystal side quests you can undertake involves the merchant Beedle and his precious missing beetle. Here's what you need to do to recover the insect and earn more Gratitude Crystals. For more tips, be sure to check out our Skyward Sword HD guides roundup, which will also help you find every heart piece and Goddess Cube location in the game. Be sure to also read our Zelda: Skyward Sword HD review for our full thoughts on the game.