Questions with the keyword 'element'

• Are diamonds strong ? by to Andrei, Ekbal, Ruth Comments: (No comments so far )
• Where do u find barium ? by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )
• why are dimonds and other types of gems so rare and expensive to buy by to Andrei, Ekbal, Gemma, Helen, Ruth Comments: (No comments so far )