Q11. Explain the uses, distribution and reserves of Gem Stones.
Ans: Gem Stones: . Gem stones (excluding Diamond and Opal) are also being mined at different sites. Most well-known among these are Emerald. . Pakistan is the fifth largest producer of Emerald in the world. Biggest Emerald mine is at Gujjar Killi (Swat-KPK) at a height of 7000 feet. . Ruby, Topaz and Quartz are … Read more