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The Stone Breakers (French: Les Casseurs de pierres) was an 1849 painting by the French painter Gustave Courbet. It was a work of realism, depicting two peasants, a young man and an old man, breaking rocks.. The Stone Breakers was first exhibited at the Paris Salon of 1850. As a work of realism the subject matter addressed a scene of everyday life. This painting was …
ما هو حجر الصوان. صوان مخطط. الصوان ، هو حجر رسوبي خفي التبلور من معدن المرو ، يصنف كنوع من الشرت chert.It occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones. عادة يكون الصوان داخل العقيدة باللون الرمادي الغامق، الأسود ...
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