Natural ruby ​​"ten red and nine cracks" carefully distinguish easy to confuse gemstones

天然红宝石

Natural rubies are “ten red and nine cracks”, and there are few natural rubies that have no cracks and cracks. However, the artificial ruby ​​has the same color, and the internal defects and crystal inclusions are small, clean, and the block is large. In addition, as a precious gemstone, natural rubies over 3 carats on the market are rare. If you encounter a large block of ruby, be sure to pay attention.

Natural rubies have a strong "dichroic". The so-called dichroism is that there are two shades of red and orange in different directions. If there is only one color, it may be red spinel, garnet or red glass.

Red spinel is very similar to natural ruby, and the two are the most confusing, so they must be especially careful.

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