Green Jewel Stone
The Jewel Stones (ジュエルストーン) are magical jewels that the Jewel Star contestants obtain to distinguish their magical improvement in the Magic Academy. Each Jewel Stone is star-shapped has different colors and collecting them while studying in Jewel Land can level up their magic ranking as well as their Jewelpets. In addition, when 12 jewel stones were collected, the person is qualified for the Jewel Star Grand Prix by default.