英语听力：自然百科 天然巨钻

 Miners in South Africa have found a white diamond about the size of a chicken egg. The diamond may be among the world's top 20 high-quality gems². It was discovered at the Cullinan mine, northeast of Pretoria.

 

Petra Diamonds Limited chief executive says the 507.55-carat gem¹ was of exceptional color and clarity. No official value has been given for the diamond, but the company’s Finance Director is quoted as saying it could be worth 20-million dollars. It weighs just over 100 grams.

 

The mine also produced the largest diamond ever found, the Cullinan, at 3,106 carats in the rough. That rough stone was cut into 9 large and 100 small finished stones. The largest of these is set in Britain’s Royal Scepter, which is part of the Crown Jewels.

1 gem   

n.宝石，珠宝；受爱戴的人 [同]jewel

参考例句：

• The gem is beyond my pocket.这颗宝石我可买不起。
• The little gem is worth two thousand dollars.这块小宝石价值两千美元。

2 gems   

growth； economy； management； and customer satisfaction 增长

参考例句：

• a crown studded with gems 镶有宝石的皇冠
• The apt citations and poetic gems have adorned his speeches. 贴切的引语和珠玑般的诗句为他的演说词增添文采。