(1) Since 1900 the site has sporadically produced gem tourmaline as well as rhodizite and beryl .

(2) Beryllium is found as the mineral beryl , a beryllium aluminum silicate.

(3) Emerald, a green transparent variety of beryl , was one of the most highly prized gemstones in antiquity.

(4) Egypt was probably the only source of emerald and other green beryl for the ancient civilizations of Europe and the Mediterranean region.

(5) Lepidolite, beryl , tantalite, quartz crystals, and altered and unaltered petalite are some of the minerals that can be found in this district.