| 翻訳と辞書 | Recycled diamond| Recycled diamond  : ウィキペディア英語版 | 
 
 A recycled diamond is a diamond, which had a prior use and has re-entered the diamond supply chain.
 Diamonds in recent times have become good candidates for recycling, due to a number of reasons including their hardness and the gemstone being a finite and valuable resource. Diamonds are the hardest known naturally occurring substance and rate a 10 on the Mohs scale of mineral hardness.
 It has been speculated that the value of the market could be as high as $1 Trillion US dollars.
 ==History==
 
 
 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』
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