About Gura Gura no Mi
The Gura Gura no Mi is a Paramecia-type Devil Fruit which allows the user to create vibrations, or "quakes", making the user a Tremor Human (震動人間, Shindō Ningen?, English: "Quake Man"). It was eaten by Edward Newgate, but upon his death, its power was stolen by Marshall D. Teach.
This fruit is fearsomely reputed to be able to destroy the world, and is considered to be the strongest Devil Fruit within the Paramecia class, having powers no weaker than those of a Logia Devil Fruit.
The Gura Gura no Mi resembles a blue pear, albeit with a "cracked" lower appearance resembling the kind created by the user. The upper section features various swirls. Similar to other fruits, it also has a green T-shaped stem that curls up at one end.