The chemical makeup of the aquamarine crystal makes it difficult to classify like some other gemstones. However, a few factors influence their appearance and value:
Vibrance
Whether you want to be sure that a stone is truly aquamarine, try putting it in the light to see whether the color changes. When viewed from different angles, a real stone will show pleochroism, which is a small shift in hue.
It appears to be a light shade of sky blue from one angle, but it may also show undertones of seafoam green from another.
Imitation glass, on the other hand, will have a consistent, flat color. If the aquamarine crystal is genuine, you can verify the difference by going close to a clear body of water.
Crystal Clearness
God's most exquisite creation is nature, and natural jewels exhibit a unique quality known as flawless constancy.
If you look extremely closely at an aquamarine gemstone, you will see tiny inclusions that are thought to be the birthmarks of the gemstone during production; these inclusions are comparable to the distinctive characteristics found in a human fingerprint.
Perfect aquamarine can be exceedingly costly, though; a stone that appears too good to be true.
Aquamarine Santa Maria
This kind originates from a certain mine in Brazil known as Santa Maria. Because of their excellent blue color and amazing purity, these stones are much sought after for jewelry.