In fact, diamonds belong to a kind of precious stone.
A diamond is a natural mineral and itself is a mid-range gem.
But not all gems are called diamonds.
In addition to diamonds, there are more than 40 kinds of gemstones according to the national industry standards, such as ruby, sapphire, emerald, nephrite, jadeite, sapphire and so on.
A gem is a stone or mineral that can meet the requirements of jewelry after being polished and polished.
Can be used as instrument bearings, abrasives, ornaments, etc., gem also refers to precious stones.
Precious stones are beautiful in color, hard, resistant to atmospheric and chemical effects, and very rare.
Modern gemology divides gemstones into three categories: colored stones, diamonds and jade.
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