books الياقوت الصناعي
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# What color is sapphire?
# Which is more expensive, emerald or sapphire?
# Composition and manufacture of sapphire
# Manufacture and composition of sapphire
# green sapphire
# Explanation of the precious sapphire
# Sapphire and coral in the interpretation of the Qur'an
# Sapphire in the origins of grammar
# sapphire life
# The novel of the red sapphire song
# sapphire lake
# sapphire protectors
# Sapphire properties
# Chemical and crystalline sapphire composition
# The locations of the sapphire
# Sapphire stone properties
# Sapphire quality determinants
# How to extract sapphire
# Sapphire extraction methods
# Sapphire locations around the world
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ياقوت اصطناعى (Info)
ياقوت اصطناعى:- مادة صلبة شفافة حمراء تحضر بصهر مسحوق الألومينا (أكسيد الألومنيوم) مع أكسيد الكروم عند درجة حرارة عادية وتستعمل في صنع الحلي. (معجم الكيمياء والصيدلة (ج٢))
