Stone
From the Super Mario Wiki
This article is about jewels from Luigi's Mansion. For information about other uses of the term "Stone", see here.
Stones, also called Jewels are valuable collectibles found in the game Luigi's Mansion. There are three different colors of Stones: Blue (500,000G each), Green (800,000G), and Red (1,000,000G). Ten of each color can be found in the Mansion, totaling 23,000,000G. To find them all, Luigi should water all the plants he can find, examine some objects such as buckets, gutters and gold chandeliers, catch Speedy Spirits, and light up all the rooms in the mansion except for the 3rd and Basement floor hallways.
Luigi also found a stone in the game Mario is Missing!. It was stolen from the Obelisk Monument in Buenos Aires by Koopa Troopas, and Luigi had to return it to the monument.
