Tchazar Gem

Tchazar Gems are valuable gems in the game which may be found. This item appears in Baldur's Gate, Baldur's Gate: Enhanced Edition, Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition.

In-game description
"Tchazar is the common name given to aragonite, a straw-yellow gemstone found in elongated, prism-shaped crystal form. It is soft and fragile, and requires skilled cutting to yield faceted gems.."