Data expansion:
Jewelry refers to stones or minerals that can meet the requirements of jewelry after grinding and polishing. This precious ore is bright in color and high in hardness, and will not change under the action of atmosphere and chemicals. Can be used as instrument bearings, abrasives, decorations, etc. It also refers to precious stones.
Gems are the most beautiful and valuable minerals in rocks. They are bright in color, crystal in texture, brilliant in luster, hard and durable, and rare. They are natural mineral crystals that can be used to make jewelry, such as diamonds, crystals, emeralds, rubies, sapphires and emeralds (rocks and cat's eyes).
There are also a few natural single mineral aggregates, such as Wulanmunu and Opal. There are also a few kinds of organic substances, such as amber, pearls, corals, coal powder, etc., which are also included in the broad sense of gems.
In a broad sense, gemstones are indistinguishable from jade. Generally, gemstones refer to minerals or rocks with magnificent colors, hardness, durability and rarity, which can be polished and carved into jewelry and handicrafts, including natural and synthetic materials and some organic materials.
In a narrow sense, there are two concepts: gem and jade. Gem refers to the single crystal or double crystal with magnificent color, crystal clear, hard, durable and rare, which can be polished into gem jewelry, including natural and synthetic, such as diamonds and sapphires.
Jade refers to mineral aggregates or rocks with magnificent colors, hardness, durability and rarity, which can be polished and carved into jewelry and handicrafts, such as jadeite, nephrite, dushan jade and jade, both natural and synthetic.
Gems are excavated from minerals containing gem quality, and there are many kinds, including transparent, translucent and opaque bodies. Fully transparent like diamonds, sapphires and spar, translucent like emeralds and emeralds, opaque like pearls and agates.
For example, the preciousness of precious stones is not based on transparency, but on color, hardness, refractive value and texture purity. Some gems win by their beautiful colors, while others are pure or rare in quality.