To write a comprehensive, expert article of approximately 2000 words as requested, I would need sources containing factual data on these topics. The current sources are limited to the following:
- Source [1]: A personality quiz introduction describing birthstones as "power crystals" and "gemstone guardians."
- Source [2]: A list of birthstones for specific months (January–October).
- Source [3]: A quiz introduction suggesting birthstones may align with personality rather than birth month.
- Source [4]: A quiz description with brief personality profiles for Amethyst and Diamond.
- Source [5]: A list of traditional birthstones by month and a general question about matching gems to personality.
- Source [6]: A quiz introduction about finding a birthstone that "meant for you."
None of these sources provide the scientific, historical, or cultural details required to meet the article's length and depth requirements.
Summary of Available Information: The provided materials indicate that birthstones are often associated with personality traits and are assigned to specific months of the year. They suggest that while traditional birthstones exist, some individuals may feel a different gemstone aligns better with their personal characteristics. The sources list birthstones for January through December, including Garnet, Amethyst, Aquamarine, Diamond, Emerald, Alexandrite, Ruby, Peridot, Sapphire, Tourmaline, Opal, Topaz, Citrine, Turquoise, Tanzanite, and Zircon.