The Jewel of Yavin is a rare corusca gem of unparalleled size, clarity, and inner radiance.
Corusca gems, also called Corusca jewels or stones were extremely rare and valuable crystals. They were produced by a combination of the extreme pressures present in the atmosphere of Yavin Prime—pressures great enough to crush elements together—and the scraping of the liquefied air of the planet against its metallic core. The sizes of Corusca gems increased with proximity to the core of Yavin. They could be found only in very select locations in the galaxy, and their vibrancy resulted in them becoming the namesake of the galactic capital: Coruscant. The Corusca Gem casino was also named after these gems. Corusca gems were mostly valued for their beauty. The way that light reflected inside a Corusca gem would make it seem as if it had a furnace within it.