In Gemmology, gems are generally divided into precious gems and semi-precious stones.

The main varieties of semi-precious stones are Tourmaline, Crystal, Lapis, Topaz (Topaz), Aquamarine, Garnet, Olivine, Tiger's eye, Obsidian, Malachite, Turquoise, Agate, Opal, etc.

Garnet is a gemstone that evolved from the Latin "granatum," meaning "like a seed.". The shape and color of garnet crystal and pomegranate seed are very similar, so it is named "garnet".

Tourmaline, also known as tourmaline, is derived from the ancient Sinhalese word turmoil, meaning "mixed gemstone".

Its name comes from Greek "rhodon" and "chrosis", meaning that its color is rose; the word rhodochrosite, from two Greek characters, refers to rose and color respectively to symbolize its special color.

Agate is one of the seven treasures of Buddhism. It has been used as an elixir and amulet since ancient times. It symbolizes friendly love and hope and helps to eliminate negative energy such as pressure, fatigue, and turbid Qi.

Turquoise is a kind of high-quality jade material. Due to the different elements, the color of turquoise is also different. The oxide is blue when it contains copper and green when it contains iron. Among them, blue, dark blue opaque or slightly transparent, uniform color, soft luster, no brown wire quality is the best.

Crystal is one of the most common minerals in nature, and it is also one of the most widely used gemstones in the jewelry industry. Crystal is loved by many people for its transparency and clarity. It is a popular gem.

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