In the middle of the sea, Highland Castle.

Legend has it that there are a group of mermaids living under the sea. They usually use aquamarine as their decoration. When you meet a critical moment, you just need to let the gem get sunshine, and then you will get the power to help yourself. Aquamarine with the property of "water" is called the birthstone of March, and it also has the meaning of the source of life.

The common crystal morphology is hexagonal columnar, followed by hexagonal bipyramid, and the aggregates are mostly columnar, transparent to translucent.

Related constellations: Aquarius, Pisces, Aries; Color: blue; Moral: calm, brave and smart; Origin: Brazil, Russian, China; Discrimination mode: pure color, no gray, no dichroism, rich and bright color with the highest value.