How do you know if a rock is valuable?
Signs a rock may contain valuable minerals are visible crystals, metallic luster, pink or purple hues, heaviness or high density, and resistance to scratching.
What is the physical property of gold?
What are 5 physical properties of gold?
Does gold stick to magnet?
Is gold hard or soft?
What are 5 interesting facts about gold?
What are the 11 physical properties of metals?