The English name of Aquamarine is Aquamarinl, which originates from the Latin SeaWater “Sea Waterâ€. Legend has it that this beautiful gem is produced on the bottom of the sea and is the essence of sea water. Therefore, it is a maritime home that prays that Poseidon will protect the safety of navigation and call it "Fu Shenshi". The gemstones in China are called “blue crystalâ€.
Name of the gem: Aquamarine
Ingredients: strontium silicate aluminum
Crystal structure: hexagonal system
Hardness: 7.5
Optical properties: refractive index 1.57-1.58, with birefringence.
Origin: Brazil, the former Soviet Union, Afghanistan, Pakistan, India, Nigeria, Madagascar
The difference between aquamarine and similar natural gemstones and synthetic aquamarine
Natural gemstones similar to aquamarine include blue topaz and altered zircon, and synthetic aquamarine with blue spinel and man-made glass. The best way to distinguish from topaz and zircon is density: topaz 3.59 g / cm3, zircon 4.69 g / cm3, density is obviously large, handcuffs have a heavy feeling. Under the magnifying glass, the zircon and topaz can be seen in the corners of the bottom facet, and the aquamarine is not very clear. Crystal form: Topaz is square columnar, zircon square column. Although the colors of artificial glass and artificial blue spinel are similar, they are all homogeneous and have no dichroism.
Evaluation and purchase of aquamarine
The factors are color, transparency and weight. The color is deep, flawless, and the weight is good. Aquamarine is characterized by sky blue, sea blue, glass luster, less inclusions, clean, transparent, weak dichroism, hexagonal columnar crystal form, and should avoid impact when worn.
Aquamarine has long been regarded as the "stone of the brave" and is regarded as a symbol of happiness and eternal youth. Many countries in the world have designated aquamarine as the “Marchstone of Birthâ€, symbolizing calmness, courage and intelligence. Westerners believe that wearing aquamarine can make people have a foresight. At the same time, it also has the power of hypnosis and evil spirits and the magical medical value. Water dipped in aquamarine can cure eye diseases, suffocation and snoring.
Aquamarine is mainly found in the pegmatite deposit, sugar-granular sodium-long petrified pegmatite. The world's most famous aquamarine is produced in Minas Gerais, Brazil; followed by Russia and China. According to reports, in 1912, a 19-inch-long, 16-inch-wide, 243-pound aquamarine crystal was found in Brazil. It was green and blue and very transparent. It should be the world's largest aquamarine so far.
Most of the aquamarine is light blue with a slight greenish tint, and the color is like the shallow sea of ​​the resort, fresh and pleasant. Containing iron is why it forms this color. Both aquamarine and emerald belong to the beryl, which have good hardness and luster. The emerald is rich in emerald green with chromium or vanadium, while the iron makes the aquamarine elegant. Although they belong to the same family, the price of emerald is higher than that of aquamarine. However, God is fair, the aquamarine's clarity is generally good, the output is also larger than the emerald, and often there are large particles of high-grade gemstones. So even ordinary people have the ability to have a top grade aquamarine.
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