(1) Rang: quyuq yashil, ko'k-yashil, va sariq-yashil keng tarqalgan. Yagona kristalli gemonlar orasida yashil rangda, Emeraldning yashil ranglari yorqin, sof va yumshoq. (2) Nishib olish spektri: xrom rangli gem toshlarining odatiy spektrini ko'rsatadi. (3) Plokroizm: The intensity of emerald's pleochroism varies with the depth of the color. The dark emerald can [...]
