The hard skeleton of red coral branches is made up of mostly calcium carbonate and is durable and intensely coloured Due to its softness and opacity, coral is usually cut as a cabochon or used to make beads
Coral jewellery has been found in ancient Egyptian and prehistoric European burials and continues to be made to the present day Usually deep water corals have light colour and shallow water corals have deep colour

فوائد المرجان

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فوائد حجر المرجان
Coral can be polished to a glassy shine
خاتم حجر المرجان احمله ولن تندم فهو خارق القوة
حجر مرجان

المرجان حجر كريم من كنوز البحر و له فوائد طبية فى جميع الحضارات القديمه Precious coral

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دلاية مرجان طبيعي متحجر fossil coral
دلاية مرجان طبيعي متحجر fossil coral
فوائد حجر المرجان