Peridot is a relatively ancient gemstone, mainly iron or magnesium silicates, etc., the crystal shows a short column or thick plate. Ancient Egyptians and Romans considered peridot to be the gemstone of the sun, believing that wearing it would bring the sun's energy and energize them.
"Gem-quality peridot is mainly categorized into intense yellowish-green peridot, golden yellowish-green peridot, yellowish-green peridot, intense green peridot (also known as twilight emerald or western emerald, evening primrose emerald) and celestial gemstones (from meteorites, which are very rare). High-quality peridot is transparent olive green, emerald green, or yellowish green, and its clear, beautiful color is very pleasing to the eye, symbolizing peace, happiness, tranquility, and other good intentions." --quoted from Baidu Encyclopedia.
Therefore people have given many good wishes to peridot. If people want to appraise peridot, they have to know about it. The classic color of peridot is yellow-green, and dense longitudinal lines can also be seen on the crystal table. The luster and refractive density of peridot can also be observed under sunlight, which generally gives a more fluid light. You can also observe the study of peridot crystal grain size to judge, generally in the formal shopping malls to buy is has been identified, it is worth rest assured.
Peridot is easily confused with green tourmaline and other gemstones, be sure to carefully identify.