Gemstones are an in-game currency that you can use to purchase items in the shop. You can earn Gemstones by completing the Daily Dotnip reward or you can purchase them in the shop. You can also purchase Gemstones in the Store.
Sundrops are an in-game currency that you can use to Breed your Peridots. You can earn Sundrops by completing Quests. You can also purchase Sundrops using Gemstones in the Store.