Short notes on Physical properties and uses of Beryl


Chemical composition: Be3Al, Si () lg; small amount of Na, Rb and Li may substitute for be; H., 0 and CO, may occur within rings.

Physical properties:

(i) Form: Hexagonal prism or columnar aggregates.


(ii) Colour: Colourless, bluish-green, emerald-green, golden-yellow, pink, white.

(iii) Lustre: Vitreous.

(iv) Streak: White.

(v) Hardness: 7-8.


(vi) Cleavage: Indistinct.

(vii) Fracture: Conchoidal to uneven.

(viii) Specific gravity: 2.7 – 2.9.

(ix) Diaphaneity: Transparent to translucent.



Beryl is the major source of beryllium, which is made alloy with copper resulting in increase of hardness, tensile strength and fatigue resistance of copper. Emerald, transparent and emerald-green (pale green) and aquamarine, transparent pale blue varieties of beryl are used as gemstones.

Web Analytics Made Easy -
Kata Mutiara Kata Kata Mutiara Kata Kata Lucu Kata Mutiara Makanan Sehat Resep Masakan Kata Motivasi obat perangsang wanita