Maklumat Produk
Description
MAKLUMAT PRODUK
Mini Encyclopedia: minerals and gemstones features 300 minerals and gemstones from copper, gold, silver, opal, kernite and gismondite. Learn what the earth is made of, how it rocks were formed and how minerals and gems are used today. Information tables contain key data such as colour, luster, streak, hardness, specific gravity, cleavage, habit and crystal system.